Plate Calculator
Instantly calculate which plates to load on your barbell. Never count plates in your head again.
Last updated: March 2026
How many plates do I need for a certain weight?
For 100kg with Olympic barbell (20kg): load 2×20kg plates per side. For 225lb: 2×45lb per side. Enter any weight in the calculator below to see exactly which plates to load.
How Much Weight Is 1–6 Plates on Each Side?
On a standard 45 lb Olympic barbell, “one plate” means one 45 lb plate on each side: 1 plate is 135 lb, 2 plates 225 lb, 3 plates 315 lb, 4 plates 405 lb, 5 plates 495 lb, 6 plates 585 lb total. With a 20 kg bar and 20 kg plates, 1 plate per side is 60 kg and each extra pair adds 40 kg — up to 260 kg at 6 plates.
Calculate Your Plates
Enter your target weight to see which plates to load
Uses standard Olympic plates for accurate calculations
Standard Olympic Plates
Metric (kg): 25, 20, 15, 10, 5, 2.5, 1.25
Imperial (lb): 45, 35, 25, 10, 5, 2.5
Note: Standard Olympic barbells weigh 20kg (45lb) for men and 15kg (35lb) for women. The calculator shows plates needed per side of the barbell.
Stop calculating plates manually
Arvo suggests the exact weight and plates for every set, based on your actual performance.
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Want to Learn More?
Dive deeper into strength training with our comprehensive guides and related tools.
Popular Weight Breakdowns
See exactly which plates to load for the most common barbell weights:
Metric (kg)
40 kg
1×10 /side
How to load 40 kg →
50 kg
1×15 /side
How to load 50 kg →
60 kg
1×20 /side
How to load 60 kg →
70 kg
1×25 /side
How to load 70 kg →
80 kg
1×20 + 1×10 /side
How to load 80 kg →
90 kg
1×25 + 1×10 /side
How to load 90 kg →
100 kg
2×20 /side
How to load 100 kg →
110 kg
1×25 + 1×20 /side
How to load 110 kg →
120 kg
1×25 + 1×25 /side
How to load 120 kg →
140 kg
1×25 + 1×20 + 1×15 /side
How to load 140 kg →
150 kg
1×25 + 2×20 /side
How to load 150 kg →
160 kg
2×25 + 1×20 /side
How to load 160 kg →
180 kg
2×25 + 1×20 + 1×10 /side
How to load 180 kg →
200 kg
2×25 + 2×20 /side
How to load 200 kg →
220 kg
2×25 + 2×20 + 1×10 /side
How to load 220 kg →
Imperial (lb)
135 lb
1×45 /side
How to load 135 lb →
155 lb
1×45 + 1×10 /side
How to load 155 lb →
185 lb
1×45 + 1×25 /side
How to load 185 lb →
225 lb
2×45 /side
How to load 225 lb →
245 lb
2×45 + 1×10 /side
How to load 245 lb →
275 lb
2×45 + 1×25 /side
How to load 275 lb →
315 lb
3×45 /side
How to load 315 lb →
365 lb
3×45 + 1×25 /side
How to load 365 lb →
405 lb
4×45 /side
How to load 405 lb →
495 lb
4×45 + 1×25 + 1×5 /side
How to load 495 lb →
500 lb
4×45 + 1×25 + 1×5 + 1×2.5 /side
How to load 500 lb →
Standard Olympic Plates
Olympic weightlifting and powerlifting use standardized plate weights. Understanding these helps you quickly calculate loads:
Metric System (kg)
Imperial System (lb)
Barbell Types and Weights
Different barbells have different weights. Make sure you're using the correct bar weight in your calculations:
| Type | Weight | Length | Use |
|---|---|---|---|
| Men's Olympic Bar | 20kg / 45lb | 2.2m / 7.2ft | Standard for all compound lifts |
| Women's Olympic Bar | 15kg / 35lb | 2.01m / 6.6ft | Smaller diameter grip, shorter length |
| Trap/Hex Bar | 20-32kg / 45-70lb | Varies | Deadlifts, shrugs - weight varies by model |
| EZ Curl Bar | 7-11kg / 15-25lb | 1.2m / 4ft | Bicep curls, tricep work |
| Safety Squat Bar | 25-32kg / 55-70lb | 2.2m / 7ft | Easier on shoulders for squats |
Common Barbell Loads
Here are the most common barbell loads and exactly which plates to put on each side:
| Imperial (lb) | |
|---|---|
| Total Weight | Bar + plates per side |
| 135 lb | 45 lb bar + 1×45 lb per side |
| 185 lb | 45 lb bar + 1×45 + 1×25 lb per side |
| 225 lb | 45 lb bar + 2×45 lb per side |
| 275 lb | 45 lb bar + 2×45 + 1×25 lb per side |
| 315 lb | 45 lb bar + 3×45 lb per side |
| Metric (kg) | |
|---|---|
| Total Weight | Bar + plates per side |
| 60 kg | 20 kg bar + 1×20 kg per side |
| 80 kg | 20 kg bar + 1×20 + 1×10 kg per side |
| 100 kg | 20 kg bar + 2×20 kg per side |
| 140 kg | 20 kg bar + 1×25 + 1×20 + 1×15 kg per side |
| 180 kg | 20 kg bar + 2×25 + 1×20 + 1×10 kg per side |
Loading Tips
- Always load plates evenly on both sides to prevent tipping
- Use collars/clips to secure plates, especially for dynamic movements
- Load largest plates first (closest to sleeves), smallest last
- Double-check your math before attempting heavy lifts
- Consider using fractional plates (0.5-1.25kg) for steady progression
Progressive Loading Strategy
How you add weight over time is critical for long-term progress. Here are proven strategies:
Linear Progression
Add 2.5kg (upper body) or 5kg (lower body) each session when you complete all prescribed reps
Double Progression
First increase reps within a range (e.g., 8→12), then add weight and drop back to lower reps
Microloading
Use 0.5-1.25kg fractional plates for slower, steady gains when regular jumps stall
💡 When progress stalls with regular plates, microplates can extend your progression by months.
Safety Checklist for Loading
Proper loading technique prevents accidents. Run through this checklist before every heavy lift:
Prevents plates sliding off during the lift — critical for dynamic movements
Uneven load causes bar tilt and puts asymmetric stress on your body
Loose plates can shift mid-lift, changing the weight distribution
Mental math errors are common — misloading can cause failed lifts or injury
Always have a bailout option for heavy compound lifts
Common Loading Errors to Avoid
These mistakes are more common than you'd think — even experienced lifters make them:
❌ Forgetting the bar weight
✅ Always count: bar weight + plates on both sides combined. The bar is part of the total.
❌ Mental math mistakes
✅ Use this calculator or double-check with a training partner before heavy attempts.
❌ Using the wrong bar
✅ Verify bar weight before loading — commercial gyms often have bars of different weights.
❌ Mixing kg and lb plates
✅ Some gyms have both metric and imperial plates. Check the numbers before loading.
❌ Loading asymmetrically
✅ Always add plates to both sides alternately to prevent the bar from tipping.
Equipment Variations by Gym Type
Different gyms have different equipment. Know what to expect:
| Gym Type | Plates | Bars |
|---|---|---|
| Commercial Gym | Often lb plates, may have limited microplate selection | Standard 45lb bars, may have women's bars available |
| Powerlifting Gym | Calibrated kg plates (accurate to ±10g), full microplate selection | Specialized power bars, deadlift bars, squat bars |
| CrossFit Box | Bumper plates (kg), often color-coded per IWF standards | Olympic bars, technique bars, various specialty bars |
| Home Gym | Varies widely — know your own equipment weights precisely | May have non-standard bars — weigh them once accurately |
💡 When visiting a new gym, spend a few minutes familiarizing yourself with their equipment before training.
Common Barbell Loading Myths Debunked
❌ All barbells weigh 20kg/45lb
✅ Bars vary: women's Olympic bar is 15kg, EZ bars are 7-11kg, trap bars are 20-32kg. Always check your specific bar's weight.
❌ Colored plates are just aesthetic
✅ Competition plate colors follow IWF standards for rapid identification: red (25kg), blue (20kg), yellow (15kg), green (10kg).
❌ You don't need to count plates carefully
✅ Loading errors are common and can cause imbalances or injuries. Always double-check before heavy lifts.
❌ Microplates are useless
✅ 0.5-1.25kg fractional plates allow gradual progression that's crucial for intermediate/advanced lifters who can't add 2.5kg weekly.
❌ The barbell doesn't count in the total
✅ The barbell is ALWAYS included in the total weight lifted. A 100kg squat means bar + plates = 100kg total.
Frequently Asked Questions
How do I use the plate calculator?
Enter your target weight, select your barbell type (standard 20kg/45lb or women's 15kg/35lb), and the calculator will show you exactly which plates to load on each side of the barbell.
What plates does this calculator use?
The calculator uses standard Olympic plates. For metric: 25, 20, 15, 10, 5, 2.5, and 1.25 kg. For imperial: 45, 35, 25, 10, 5, and 2.5 lb plates.
Why can't I achieve certain weights?
Some weights are impossible to achieve with standard plates. For example, 101kg requires a 0.5kg plate which isn't standard. The calculator will tell you if your target weight can't be achieved with available plates.
How much does an Olympic barbell weigh?
A standard men's Olympic barbell weighs 20kg (45lb). A women's Olympic barbell weighs 15kg (35lb). Some specialty bars (safety squat, trap bar) may have different weights.
Are the plate colors accurate?
The colors follow the IWF (International Weightlifting Federation) standard for competition plates: red for 25kg, blue for 20kg, yellow for 15kg, green for 10kg. However, gym plates may vary.
How do I convert between kg and lb?
To convert kg to lb, multiply by 2.205 (e.g., 100kg × 2.205 = 220.5lb). To convert lb to kg, multiply by 0.453 (e.g., 225lb × 0.453 = 102kg). Common equivalents: 20kg ≈ 45lb, 60kg ≈ 135lb, 100kg ≈ 225lb.
What's the difference between bumper plates and iron plates?
Bumper plates are made of rubber with a steel core and can be dropped safely - essential for Olympic lifts. Iron plates are metal, more compact, but can damage floors if dropped. Bumper plates are IWF color-coded, iron plates vary by manufacturer.
Do I count the weight of collars/clips?
Standard spring clips weigh about 0.5kg (1lb) total for the pair - usually negligible. Competition collars weigh 2.5kg each (5kg total). If using heavy collars for competition, factor them into your total weight calculation.
Automatic Weight Tracking
This calculator helps you load the bar. Arvo tracks all your lifts automatically, calculates progressive overload, and tells you exactly what weight to use for each set.
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