Skip to content
BarWeight
Tools

Weight Plates: Bore, Thickness, and What Fits Your Bar

Short answer

Bore diameter decides everything. A two-inch bore fits an Olympic bar; a one-inch bore does not, and no adapter makes that a good idea. Check the bore before the weight.

Buying criteria

How to choose weight plates

01Bore diameter, before anything else

Plates come with a two-inch bore for Olympic bars or a one-inch bore for standard bars, and they are not interchangeable. An Olympic bar sleeve is roughly two inches across, so a one-inch plate will not go on at all. A two-inch plate on a one-inch bar will go on and then rattle around the shaft, which is worse. Every card below carries the bore the listing published. If a listing does not state a bore, that is the first question to ask the seller, because it is the one mistake in this category that cannot be worked around.

02Iron, bumper, or urethane

Cast iron is dense, thin, cheap and loud, and it will crack a floor and itself if you drop it. Rubber bumpers are made to be dropped from overhead, which is why anyone doing Olympic lifts owns them, and they are much thicker for the same weight. Urethane sits above bumpers on durability and price. The trade is thickness against droppability: a 45 lb bumper takes up far more sleeve than a 45 lb iron plate, and on a long-sleeve bar that is the difference between fitting 400 lb and not.

03Thickness is a budget you spend on the sleeve

Loadable sleeve length is finite. Every plate you add spends some of it. Bumper plates spend it fast — a stack of them can run out of sleeve well before you run out of strength, which is exactly why competition bumpers are made as thin as the rules allow. If you already own a bar, find its published loadable sleeve length, then look at the plate thickness on these cards and do the arithmetic before you order. Our plate loading visualizer will draw the stack so you can see it.

04Buy in pairs, and buy the small ones

A bar loaded unevenly is a bar that tips, so plates only ever go on in pairs. The set that people regret is the one that goes 45, 35, 25, 10, 5 and stops — because the smallest jump you can then make is 10 lb on the bar, and a 5 lb jump on a press is already a lot. A pair of 2.5s and a pair of 1.25s cost very little and are what let you add weight for another year. The set contents on each card are exactly what the listing states is in the box.

05Grip holes are a real feature, not styling

Plates with cut-out handles are far easier to carry and to load one-handed, which matters more than it sounds when you are stripping a bar between sets. The trade is that a grip plate is usually a little thicker than a flat one of the same weight, and the handles change how the plate sits against the collar. Where a listing publishes a grip type, it is on the card. Where it does not, assume flat.

Plain English

What the specs on these listings mean

Every number on the cards below was copied from the manufacturer page or the retail listing on the date shown. Where a seller did not publish a figure, the card leaves it out rather than guessing at it.

Bore
The hole diameter. Two inches for Olympic, one inch for standard. Not interchangeable.
Bumper
Solid rubber plate built to be dropped. Thicker than iron for the same weight.
Change plates
The small plates — 2.5, 1.25, sometimes 0.5 lb — that let you make small jumps.
Set weight
The total in the box, counting both sides. Halve it to know what goes on one sleeve.

28 models

Every weight plate we have spec’d

Sorted as the dataset holds them. These are not ranked, because ranking them would mean claiming a comparison we have not run.

BarWeight is a participant in the Amazon Services LLC Associates Program. We earn a commission from qualifying purchases made through links on this page, at no extra cost to you. Full disclosure.

Amazon Basics 2-Inch Olympic Grip Weight Plates

B0DNS4B576
Bore
2 in Olympic
Material
Cast iron

Best for: Iron plates for a rack-and-bar gym where nothing gets dropped.

Skip if: You deadlift on a floor you care about. Iron is not a bumper.

Check these yourself before ordering

  • — Which weights the option you selected actually contains
  • — Whether they are sold singly or in pairs
  • — Plate thickness against your sleeve length — see the bar data on this site
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

CAP 2-Inch Olympic Bumper Plate Weight Set

B0DHYNHYJD
Bore
2 in Olympic
Set Weight
100 to 370 lb depending on option
Type
Bumper plates
Optional
Storage rack

Best for: Deadlifting and dropping the bar without wrecking the floor.

Skip if: Space is tight. Bumpers are thicker than iron, so fewer fit on the sleeve.

Check these yourself before ordering

  • — Which set size you are ordering — the listing runs 100 to 370 lb
  • — Whether the storage rack is included in your option
  • — Total loaded sleeve length before you buy the heavy set
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

CAP Barbell Olympic Weight Set with 7 ft Barbell and Bumper Plates

B0GBZWFBYW
Set Weight
160 to 370 lb depending on option
Includes
7 ft barbell plus bumper plates

Best for: Starting from nothing. Bar and plates in one order, which removes the most common beginner mistake of buying a bar that does not match the plates.

Skip if: You already own a bar you like.

Check these yourself before ordering

  • — Which option you selected — set weight varies from 160 to 370 lb
  • — The bar spec, since the title does not state its weight or shaft diameter
  • — Whether collars are included
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

CAP Barbell 2-Inch Olympic Cast Iron Plate Weight Set

B0FMS919GQ
Bore
2 in Olympic
Set Weight
75 to 285 lb depending on option

Best for: The cheapest route to a full plate set when you are not dropping the bar.

Skip if: You deadlift to the floor without a platform.

Check these yourself before ordering

  • — Which set size you selected
  • — The exact plate breakdown — a stated total does not tell you the increments
  • — Sleeve length against total plate thickness
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

AMGYM 2-Inch Olympic Bumper Plates Set

B09MJWLSHJ
Bore
2 in Olympic
Type
Bumper plates

Best for: Adding bumpers to a bar you already own.

Skip if: You want low-bounce competition-style bumpers — this listing states high bounce.

Check these yourself before ordering

  • — Which weights the option contains and whether it is a pair or a set
  • — Bounce behaviour, since the listing describes these as high bounce
  • — Plate thickness against your sleeve
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

HANDBODE Olympic Barbell Set

B0DFGHSF8F
Material
Alloy Steel
Item Weight
230 pounds
Number Of Items
13
Color
7 ft Black Barbell
Stated Capacity
530 lb (as stated in the listing title)
Stated Weight Range
90 to 530 lb (as stated in the listing title)

Best for: Dropping the bar without destroying the floor — that is what a bumper plate is for.

Skip if: You want the thinnest possible plate per pound. Bumpers are thick and eat sleeve length.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

RitFit Weight Plates for Barbell

B09YCSFCB3
Material
Rubber
Item Weight
85 pounds
Number Of Items
8
Color
Black

Best for: Loading a bar you already own.

Skip if: You deadlift to the floor with cast iron and no platform.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

Signature Fitness 2" Olympic Bumper Plate Weight Plates with

B0C97T4CXS
Material
Rubber
Item Weight
2 pounds
Weight Limit
45 pounds
Number Of Items
2
Unit Count
2 Count
Model Number
EEBPBLK45P

Best for: Dropping the bar without destroying the floor — that is what a bumper plate is for.

Skip if: You want the thinnest possible plate per pound. Bumpers are thick and eat sleeve length.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

Marcy High Bounce Olympic Bumper Plate for Strength Training

B0DV2RH43L
Material
Dense Recycled Crumb Rubber
Item Weight
35 pounds
Color
Multi
Model Number
MCBP-035

Best for: Dropping the bar without destroying the floor — that is what a bumper plate is for.

Skip if: You want the thinnest possible plate per pound. Bumpers are thick and eat sleeve length.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

CAP 2-inch Olympic Bumper Plate Weight Set

B0DHYM29VH
Material
Cast Iron, Rubber
Number Of Items
6
Color
Black
Unit Count
6 Count
Model Number
OSR6IS-160
Stated Capacity
370 lb (as stated in the listing title)

Best for: Dropping the bar without destroying the floor — that is what a bumper plate is for.

Skip if: You want the thinnest possible plate per pound. Bumpers are thick and eat sleeve length.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

Body-Solid Cast Iron Olympic Weight Plate Set, Free Weights

B002AK6VA6
Material
Cast Iron
Item Weight
355 pounds
Number Of Items
1
Color
Black
Included Components
355 Lb Cast Oly Set
Unit Count
14 Count

Best for: Loading a bar you already own.

Skip if: You deadlift to the floor with cast iron and no platform.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

HANDBODE 2-Inch High-Bounce Bumper Plates, Olympic Weight Set

B0CVVHW8H7
Material
Alloy Steel, Rubber
Item Weight
190 pounds
Number Of Items
8
Color
Black
Unit Count
8 Count
Stated Capacity
650 lb (as stated in the listing title)

Best for: Dropping the bar without destroying the floor — that is what a bumper plate is for.

Skip if: You want the thinnest possible plate per pound. Bumpers are thick and eat sleeve length.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

CAP Barbell 2-Inch Olympic Cast Iron Plate Weight Set

B0FLN1TY4Q
Material
Cast Iron
Item Weight
285 pounds
Number Of Items
22
Color
Black
Unit Count
24 Count
Model Number
OSHWIS-285

Best for: Loading a bar you already own.

Skip if: You deadlift to the floor with cast iron and no platform.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

Gikpal Olympic Weight Plates

B0DB5D18ZW
Material
Rubber
Item Weight
180 pounds
Number Of Items
8
Color
Black

Best for: Loading a bar you already own.

Skip if: You deadlift to the floor with cast iron and no platform.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

Body-Solid (OST255) Cast Iron Olympic Quad Grip Design Weight

B001L103PY
Material
Iron
Item Weight
255 pounds
Number Of Items
1
Color
Chrome, Gray
Included Components
Grey Hand Grip Oly Plate 255Lbs
Unit Count
12 Count

Best for: Loading a bar you already own.

Skip if: You deadlift to the floor with cast iron and no platform.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

Amazon Basics 1-Inch Grip Weight Plates, Cast Iron, Strength

B0DNS4TM4F
Material
Cast Iron
Item Weight
1.13 kg
Number Of Items
4
Color
charcoal

Best for: Loading a bar you already own.

Skip if: You deadlift to the floor with cast iron and no platform.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

REP Fitness Rubber Bumper Plates

B013RM1TVQ
Material
Rubber
Item Weight
45 pounds
Number Of Items
2
Color
Black
Unit Count
2 Count
Stated Capacity
370 lb (as stated in the listing title)

Best for: Dropping the bar without destroying the floor — that is what a bumper plate is for.

Skip if: You want the thinnest possible plate per pound. Bumpers are thick and eat sleeve length.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

Amazon Basics 2-Inch Olympic Grip Weight Plates, Cast Iron

B0DNS61K8D
Material
Cast Iron
Item Weight
4.54 kg
Number Of Items
6
Color
charcoal

Best for: Loading a bar you already own.

Skip if: You deadlift to the floor with cast iron and no platform.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

Fitvids 2 Inch Olympic Barbell Weight Plates Set

B0FCBX34DN
Material
Cast Iron
Item Weight
80 pounds
Color
Black
Model Number
SF2TRY-STD255-1
Stated Capacity
255 lb (as stated in the listing title)
Stated Weight Range
2.5 to 45 lb (as stated in the listing title)

Best for: Loading a bar you already own.

Skip if: You deadlift to the floor with cast iron and no platform.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

XMARK Olympic Weight Set

B081GB76K3
Material
Carbon Steel
Item Weight
21 pounds
Dimensions
48"L x 3"W
Weight Limit
400 pounds
Grip Type
Knurled
Unit Count
1 Count

Best for: Loading a bar you already own.

Skip if: You deadlift to the floor with cast iron and no platform.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

Mikolo Olympic Bumper Plates Set

B0D66J7CMZ
Material
Rubber
Item Weight
230 pounds
Number Of Items
8
Color
colored
Model Number
230
Stated Capacity
230 lb (as stated in the listing title)

Best for: Dropping the bar without destroying the floor — that is what a bumper plate is for.

Skip if: You want the thinnest possible plate per pound. Bumpers are thick and eat sleeve length.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

Mikolo Olympic Weight Plates

B0DKJ6BHPD
Material
Rubber
Item Weight
72.2 pounds
Number Of Items
8
Color
Black

Best for: Dropping the bar without destroying the floor — that is what a bumper plate is for.

Skip if: You want the thinnest possible plate per pound. Bumpers are thick and eat sleeve length.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

2" Bumper Plates Set Olympic Weight Plates for Barbell

B0DCN8K9X1
Material
Rubber
Item Weight
140 pounds
Color
black
Stated Capacity
600 lb (as stated in the listing title)

Best for: Dropping the bar without destroying the floor — that is what a bumper plate is for.

Skip if: You want the thinnest possible plate per pound. Bumpers are thick and eat sleeve length.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

CAP Barbell 2-Inch Olympic Weight Plate

B09NLCS4PC
Material
Cast Iron
Item Weight
45 pounds
Number Of Items
1
Color
45 LB Single Black
Included Components
45 lb Olympic weight
Unit Count
1 Count

Best for: Loading a bar you already own.

Skip if: You deadlift to the floor with cast iron and no platform.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

HANDBODE 2-Inch Weight Plates High Bounce, Olympic Bumper

B0GJD9DX3B
Material
Alloy Steel, Rubber
Item Weight
340 pounds
Color
Colored
Stated Capacity
300 lb (as stated in the listing title)

Best for: Dropping the bar without destroying the floor — that is what a bumper plate is for.

Skip if: You want the thinnest possible plate per pound. Bumpers are thick and eat sleeve length.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

Fitvids 2-Inch Olympic Rubber Weight Plates Sets, Bumper

B0H14QPX1V
Material
Rubber
Item Weight
45 pounds
Number Of Items
6
Color
Colored
Unit Count
9 Count
Model Number
QD-CLRPRBP180BARSET-N

Best for: Dropping the bar without destroying the floor — that is what a bumper plate is for.

Skip if: You want the thinnest possible plate per pound. Bumpers are thick and eat sleeve length.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

Fitvids 2-Inch Olympic Bumper Plates, Perfect Weight Plates

B0H4PWV8YD
Material
Rubber
Item Weight
45 pounds
Number Of Items
22
Color
Black
Unit Count
22 Count
Model Number
QD740-EEBLK-BP180SET-1

Best for: Dropping the bar without destroying the floor — that is what a bumper plate is for.

Skip if: You want the thinnest possible plate per pound. Bumpers are thick and eat sleeve length.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

CAP Barbell Rubber Olympic Bumper Plate

B0CLFQ5GG4
Material
Alloy Steel, Rubber
Item Weight
45 pounds
Number Of Items
1
Color
Black
Unit Count
1 Count
Model Number
OPR6IS-045

Best for: Dropping the bar without destroying the floor — that is what a bumper plate is for.

Skip if: You want the thinnest possible plate per pound. Bumpers are thick and eat sleeve length.

Check these yourself before ordering

  • — Which weights the option contains, and whether it is a pair or a set
  • — The bore — 2 in Olympic and 1 in standard are not interchangeable
  • — Total plate thickness against your sleeve length
View on Amazon

Specs read from the listing on 2026-07-24. Listings change — confirm the current spec and option before you order.

No verified link

Reference specs, nothing to sell

These are the models people measure everything else against. We could not verify a retail listing for the exact model, so there is no buy link — just the manufacturer spec sheet.

Rogue Olympic Plates (cast iron)

NO LINK
Weights
1.25, 2.5, 5, 10, 25, 35, 45 and 100 lb
Material
Cast iron
Finish
Black with silver lettering
Diameter45lb
17.5 in
Thickness45lb
1.3 in
Note
Sold in pairs. Cast products carry minor finish variance.

Best for: A straightforward iron plate set for a rack-and-bar gym. Full dimensional table lives in plates.ts.

Skip if: You deadlift on a floor you care about, or you drop the bar. These are iron, not bumpers.

Check these yourself before ordering

  • — That the 45 lb at 17.5 in diameter gives you the bar height you expect off the floor
  • — How many will physically fit on your sleeve length — see bars.ts

Reference only — no verified retail link for this model. Manufacturer spec sheet.

Free tools

Run the numbers first

This is a calculator site. The gear is here because the math points at it, not the other way round.

Questions people actually ask

▶Do I need bumper plates?

Only if you are going to drop the bar. Snatches, cleans and jerks end with the bar coming down from overhead, and iron plates plus a concrete floor is how you break both. If you squat, bench, press and deadlift with control, iron is thinner, cheaper and completely adequate. Deadlifting on a garage slab is the grey area — plenty of people use iron and set the bar down rather than dropping it.

▶Are all Olympic plates the same size hole?

The bore is nominally two inches across the category, but manufacturing tolerance varies and some plates are a snugger fit on a given bar than others. That is normal. What is not normal is a plate that will not pass over the sleeve at all — if that happens, it is a standard plate mislabelled, or the bar is not an Olympic bar. The bore on every card is the figure the listing published.

▶How much do the plates weigh compared to what is printed?

We have not weighed any of these, so we will not give you a tolerance figure. What we will say is that budget cast iron is not calibrated, and a printed 45 can be a pound or two either way. That does not matter for training and it matters enormously for comparing your numbers against a competition standard. If exactness is the point, calibrated plates are a separate and much more expensive product class.

▶What plates should I buy first?

Two 45s, two 25s, two 10s, two 5s and two 2.5s covers the bar from empty to 225 lb and gives you a 5 lb jump the whole way. Add the second pair of 45s when you get there. Buying a huge set on day one is how people end up with 300 lb of iron and no way to add 5 lb to a bench press.

Equipment by category

The rest of the equipment

Same treatment, different category. Published specs only, no prices, nothing ranked.