Barbell Plate Loading Calculator

Summary

The barbell plate loading calculator tells you exactly which weight plates to put on each side of the bar to hit your target lift weight. Enter your target weight and the barbell weight, then choose lb or kg mode. The calculator uses standard plate sets and solves for the minimum number of plates using a greedy largest-first algorithm, matching what you would do naturally in any gym.

How it works

1. Select your unit system: lb (pounds) or kg (kilograms).
2. Enter the weight of your barbell (default: 45 lb or 20 kg).
3. Enter your target total lift weight (barbell + all plates combined).
4. The calculator subtracts the barbell weight to find the total plate weight needed.
5. It divides that by two to get the weight per side.
6. A greedy algorithm picks the fewest plates starting from the heaviest available, listing exactly which plates to load on each side.

Use cases

• Quickly figure out which plates to grab before a working set.
• Avoid mental math when warming up to a heavy squat, bench, or deadlift.
• Learn barbell loading as a beginner unfamiliar with standard plate sets.
• Plan plate changes between sets during a competition warm-up.
• Convert a program written in lb to kg or vice versa and verify the loading.
• Coach athletes remotely by specifying exact plate configurations.
• Double-check that you have loaded the bar correctly before a heavy lift.

Frequently Asked Questions