Last updated: September 2026
How much is a plate? At the gym, “a plate” means one large 45 lb plate (20 kg in metric gyms), and lifters count plates per side of the bar. So “one plate” on a standard 45 lb barbell is 135 lb, “two plates” is 225 lb and “three plates” is 315 lb. In kilograms, one plate on a 20 kg bar is 60 kg.
How Much Does a Plate Weigh?
It depends on where you train:
- US and other pound-based gyms: a plate is 45 lb (20.41 kg).
- Metric gyms: a plate is 20 kg (44.09 lb), the blue plate in the international colour code.
- Competition weightlifting and powerlifting: the largest plate is the red 25 kg (55.1 lb) plate [IWF]. That’s why some lifters ask whether “a plate” is 20 or 25 kg. In everyday gym talk it still means 20 kg (or 45 lb).
If you’ve wondered why the big pound plate is 45 lb rather than a round 50, it’s the pound-based counterpart of the 20 kg plate. The two standards are close but not identical. A 45 lb plate is about 0.4 kg heavier than a 20 kg plate, and the gap adds up: four 45 lb plates per side on a 45 lb bar is 405 lb, while four 20 kg plates on a 20 kg bar is 180 kg (396.8 lb).
| Plate set | Common sizes |
|---|---|
| Pound gyms | 45, 35, 25, 10, 5 and 2.5 lb (some add 1.25 lb microplates) |
| Metric gyms | 25, 20, 15, 10, 5, 2.5 and 1.25 kg |
How Much Is 1, 2, 3… 8 Plates? (lb)
This chart covers the standard setup: a 45 lb Olympic barbell with 45 lb plates on each side.
| Plates per side | Total weight | Plates only | What lifters call it |
|---|---|---|---|
| 1 plate | 135 lb | 90 lb | “A plate” / “135” |
| 2 plates | 225 lb | 180 lb | “Two plates” / “225” |
| 3 plates | 315 lb | 270 lb | “Three plates” / “315” |
| 4 plates | 405 lb | 360 lb | “Four plates” / “405” |
| 5 plates | 495 lb | 450 lb | “Five plates” / “495” |
| 6 plates | 585 lb | 540 lb | “Six plates” |
| 7 plates | 675 lb | 630 lb | “Seven plates” |
| 8 plates | 765 lb | 720 lb | “Eight plates” |
The formula is total = bar + 2 × (plates on one side). Each extra plate per side adds 90 lb (45 lb × 2 sides), so every milestone is the 45 lb bar plus a multiple of 90. When someone says “four plates on each side,” they mean 405 lb, not 360 lb. The bar counts too.
The Same Chart in Kilograms
Metric gyms use 20 kg plates on a 20 kg bar, so the milestones land on rounder numbers:
| Plates per side (20 kg) | Total weight | Approx. in lb |
|---|---|---|
| 1 plate | 60 kg | 132 lb |
| 2 plates | 100 kg | 220 lb |
| 3 plates | 140 kg | 309 lb |
| 4 plates | 180 kg | 397 lb |
| 5 plates | 220 kg | 485 lb |
| 6 plates | 260 kg | 573 lb |
| 7 plates | 300 kg | 661 lb |
| 8 plates | 340 kg | 750 lb |
If your gym uses red 25 kg plates, each plate per side adds 50 kg instead of 40 kg: one 25 kg plate per side on a 20 kg bar is 70 kg.
Calculate Your Exact Plate Setup
Enter a target weight and get the exact plates to load on each side of the bar, in lb or kg. No mental math required.
Use the Barbell Calculator →How Much Is Benching a Plate?
Benching “a plate” means bench pressing 135 lb: one 45 lb plate on each side of a 45 lb bar (60 kg with 20 kg plates on a 20 kg bar). It’s often a lifter’s first recognisable milestone, followed by 225 (two plates), 315 (three) and 405 (four). These numbers are common gym shorthand because they’re what you get when you load whole plates, not because they’re official strength levels. How strong a given lift is depends on your body weight, sex and training age. See our strength standards for that.
Most training weights fall between these milestones. For how to load any target weight with smaller plates, see the loading guide:
Other Plate Slang: “A Plate and a 25” and Plates Without a Bar
“A plate and a 25” (sometimes called “a plate and a half”) means one 45 lb plate plus one 25 lb plate on each side. On a 45 lb bar that’s 185 lb. “Two plates and a 25” is 275 lb.
No bar, no doubling: the per-side rule only applies to a bar loaded on both ends. When plates hang from a dip belt (weighted dips or pull-ups), the count is literal: “two plates” on a belt is 90 lb. The same goes for lifts that load only one end of a bar, like landmine presses and T-bar rows, where “two plates” means two 45s plus whatever the bar contributes.
When the Bar Isn’t 45 lb
The charts above assume a standard men’s Olympic bar. Plate counts stay the same on other bars, but the total changes:
| Bar | Bar weight | “One plate” total |
|---|---|---|
| Men’s Olympic bar | 45 lb / 20 kg | 135 lb / 60 kg |
| Women’s Olympic bar | 15 kg (33 lb); many US gyms label it 35 lb | 55 kg / about 123–125 lb |
| Technique or training bar | often 15 lb, varies | check the bar |
| Smith machine | varies by machine (often counterbalanced) | check the label |
Leg press: lifters count plates per side on the leg press too, so “four plates” means eight 45 lb plates (360 lb of plates). But the sled itself has its own starting weight, which varies a lot between machines and is often printed on the frame. So there’s no single total for “a plate” on the leg press. Add the plates to the sled weight for your machine.
Related Reading
How Much Does a Barbell Weigh? Every Bar Type Explained →Competition Plate Colours (IWF Standard)
In weightlifting competitions, plates are colour-coded so the weight can be read at a glance [IWF]:
- Red: 25 kg (55 lb)
- Blue: 20 kg (44 lb)
- Yellow: 15 kg (33 lb)
- Green: 10 kg (22 lb)
- White: 5 kg (11 lb)
The bars follow the same code: the 20 kg men’s bar has blue markings and the 15 kg women’s bar has yellow markings. Many gyms with coloured bumper plates use this scheme, but plenty of commercial gyms use plain black iron plates, where you have to read the number on each plate.
Frequently Asked Questions
Is 1 plate 20 kg or 25 kg?
In most gyms, one plate means 20 kg (or 45 lb in pound-based gyms). The 25 kg red plate is the largest plate in weightlifting and powerlifting competitions, and some competition-style gyms stock it, but everyday gym talk treats “a plate” as 20 kg. If you’re unsure, check the number printed on the plate.
Is 2 plates 100 kg?
Yes, with 20 kg plates on a standard 20 kg bar. Two plates per side is four 20 kg plates (80 kg) plus the 20 kg bar, which makes 100 kg. With 45 lb plates on a 45 lb bar, two plates is 225 lb (about 102 kg). With 25 kg plates it would be 120 kg.
Is a plate 45 pounds or kg?
Both, depending on the gym. In the US and other pound-based gyms, a plate is 45 lb. In metric gyms it’s 20 kg. They’re nearly the same: 45 lb is about 20.4 kg and 20 kg is about 44.1 lb. Lifters use “a plate” for either, counted per side of the bar.
How much is benching 1 plate?
Benching one plate is 135 lb: a 45 lb bar plus one 45 lb plate on each side. With metric equipment it’s 60 kg: a 20 kg bar plus one 20 kg plate per side. On a 15 kg women’s bar, one plate per side comes to 55 kg (about 123–125 lb, depending on whether the bar is 33 or 35 lb).
How much is 4 plates on each side?
Four 45 lb plates on each side of a 45 lb bar is 405 lb: 360 lb of plates plus the bar. With 20 kg plates on a 20 kg bar it’s 180 kg (about 397 lb). On a leg press, four plates per side is 360 lb of plates plus the machine’s sled weight.
How many plates is a leg press “plate”?
The same as on a barbell: one 45 lb (or 20 kg) plate on each side. So “three plates” on the leg press is six plates, 270 lb of plates. Unlike a barbell, the leg press sled has its own starting weight that varies by machine, so add that number (often shown on the machine) to get the true total.
Sources: International Weightlifting Federation (IWF), Equipment: disc colours and bar specifications. Conversions: 1 lb = 0.4536 kg.
