DUAL-UNIT CONVERTER
KG & LB 1RM Calculator
Real-time synchronized metric and imperial One Rep Max calculator with Olympic plate color lookup.
SYNCHRONIZED INPUTS
Enter Lift in Either Unit
kg
lb
ESTIMATED 1RM (KG)
116.7
Kilograms ESTIMATED 1RM (LB)
257.2
Pounds IPF / OLYMPIC DISC CONVERSION GUIDE
🔴 Red 25 kg= 55.1 lb
🔵 Blue 20 kg= 44.1 lb
🟡 Yellow 15 kg= 33.1 lb
🟢 Green 10 kg= 22.0 lb
STANDARDS CONVERSION
Metric vs Imperial Plate Loading
Transitioning between commercial gym pound plates (45 lb) and competition calibrated kilogram plates (20 kg / 25 kg) requires precise rounding to prevent misloading.
Standard Plate Conversions Table
| Metric Plate (KG) | Imperial Equivalent (LB) | Olympic Color Code |
|---|---|---|
| 25.0 kg | 55.12 lb | 🔴 Red |
| 20.0 kg | 44.09 lb | 🔵 Blue |
| 15.0 kg | 33.07 lb | 🟡 Yellow |
| 10.0 kg | 22.05 lb | 🟢 Green |
| 5.0 kg | 11.02 lb | ⚪ White |
FAQ
Frequently Asked Questions
Everything you need to know about kg and lb weight conversions.
No. A 45 lb plate equals 20.41 kg, and a 20 kg plate equals 44.09 lb. Loading four 45 lb plates yields 225 lb (102.05 kg), whereas four 20 kg plates on a 20 kg bar yields 100 kg (220.46 lb).
A standard Men's Olympic barbell weighs 20 kg (44.09 lb, often rounded to 45 lb in US commercial gyms). A Women's barbell weighs 15 kg (33.07 lb).