Plate Calculator: How Much Is 2, 3 or 4 Plates a Side?
Plate calculator: what to load on each side for any weight in lb or kg, and how much 1 to 6 plates a side weigh, with 25s, 35s and kilo plates.
Same plates on the bar for weeks? Find out why it stopped moving.
Bar, collars and plates together.
- 45lb × 2
Plates are loaded heaviest first, innermost, the order the IPF rulebook requires. We assume you have as many pairs of each plate as you need.
Rules: IPF Technical Rulebook 2026 (collars 2.5 kg each; disc order).
Numbers not moving for weeks? Find out why- Updated
- Reading time
- 3 min
- By
- LiftDecode
Each 45 lb plate a side adds 90 lb to a 45 lb bar: one plate a side is 135, two is 225, three is 315 and four is 405. Use the calculator above for any other weight: tick the plates your gym has and it shows what goes on each side, heaviest first, in lb or kg.
How much is 2, 3 or 4 plates a side?
Count the plates on one side, double them and add the bar. With 45 lb plates on a 45 lb bar:
| Per side | Total | In kg |
|---|---|---|
| 1 × 45 | 135 lb | 61 kg |
| 2 × 45 | 225 lb | 102 kg |
| 3 × 45 | 315 lb | 143 kg |
| 4 × 45 | 405 lb | 184 kg |
| 5 × 45 | 495 lb | 225 kg |
| 6 × 45 | 585 lb | 265 kg |
| 1 × 35 | 115 lb | 52 kg |
| 2 × 35, or 45 + 25 | 185 lb | 84 kg |
| 45 + 35 | 205 lb | 93 kg |
| 2 × 45 + 25 (45, 45, 25) | 275 lb | 125 kg |
Kilo conversions use the legal pound, exactly 0.45359237 kg (NIST Handbook 44). In a kilo gym, 20 kg plates on a 20 kg bar make 60, 100, 140 and 180 kg for one to four a side, and a 25 kg plate weighs 55.1 lb.
How many plates is 215, 305 or 400 lb?
Take off the bar, halve the rest and load the biggest plates that fit. With a 45 lb bar:
| Target | Each side |
|---|---|
| 160 lb | 45, 10, 2.5 |
| 215 lb | 45, 35, 5 |
| 305 lb | 45, 45, 35, 5 |
| 350 lb | 45, 45, 45, 10, 5, 2.5 |
| 400 lb | 45, 45, 45, 35, 5, 2.5 |
If your gym has no 35s, swap each 35 for 25 + 10.
How much do barbells, plates and collars weigh?
A men's Olympic bar weighs 20 kg (44.1 lb), counted as 45 lb in most US gyms; a women's bar weighs 15 kg (33.1 lb) (barbell).
| Item | Pounds | Kilograms |
|---|---|---|
| Men's bar | 45 (44.1) | 20 |
| Women's bar | 35 (33.1) | 15 |
| Big plate | 45 | 20 or 25 |
| Competition collar, each | 5.5 | 2.5 |
Competition plates must be within 0.25% or 10 g of their marked weight (IPF Technical Rulebook). Gym plates are rarely that accurate, so track a lift with the same bar and plates.
How do you load a barbell correctly?
Heaviest plates first, innermost, with identical loads on both sides. Collar heavy sets, and unload alternately so the bar cannot tip off the rack. For warm-ups, use plate-sized jumps: for 225, the bar, 135, 185, then 225; plan working weights with the 1RM percentage chart.
Why do small plates matter for progress?
Because a 5 lb jump is already about 4% of a 135 lb press. The ACSM recommends adding 2–10% once you beat your target reps by one or two (ACSM, 2009), so light lifts need small plates or more reps before each jump. If the bar has carried the same plates for weeks, the cause is in your program or recovery: find out why it stopped moving.
FAQ
How much is two plates on a barbell?
225 lb: two 45 lb plates per side on a 45 lb bar. In a kilo gym, two 20 kg plates per side on a 20 kg bar make 100 kg (220.5 lb).
How much does the bar weigh at the gym?
Most standard bars weigh 20 kg (44.1 lb), counted as 45 lb. Women's bars weigh 15 kg; EZ curl and trap bars vary, so weigh them once.
Can I mix kg and lb plates on the same bar?
You can, but log it carefully: a 20 kg plate is 44.1 lb, not 45, so mixing quietly changes your numbers.
Written and maintained by LiftDecode. Training and nutrition education for healthy adults, not medical advice — if you have a health condition or an injury, talk to a professional who can examine you.