What's the difference between Olympic and standard plates?
Olympic plates have 50mm holes for Olympic bars; standard have 25mm holes for standard bars.
Health Fitness
Barbell Plate Calculator
Calculate barbell plate with your details.
Personalized estimate
Use realistic inputs for the most useful results.
What this calculator does
A barbell plate calculator determines which weight plates to load to reach a target weight. It subtracts bar weight, divides by two for each side, then identifies plate combinations.
How it works
Plates per Side = (Target Weight - Bar Weight) ÷ 2. Then match available plates from heaviest to lightest.
Formula
For 185 lbs on 45 lb bar: (185-45)÷2 = 70 lbs per side. Load 45+25 on each side.
Tips for using this calculator
- Know your barbell weight—Olympic 7ft bars are 45 lbs
- Standard plate denominations provide maximum flexibility
- Budget plates may vary 10% from marked weight
- Never mix 45 lb and 20 kg plates on same bar
- Load heavier plates closer to center
Frequently asked questions
How much does an Olympic bar weigh?
Standard 7-foot Olympic bar weighs 45 lbs (20 kg). Shorter variants may weigh 29-35 lbs.
Can I mix 45 lb and 20 kg plates?
Not recommended. 45 lb = 20.4 kg, 20 kg = 44.1 lbs. Stick to one standard.