What barbell weight should I enter?

A standard Olympic barbell weighs 45 lb (20 kg). Some gyms use 35 lb (15 kg) bars for women or lighter technique bars at 33 lb (15 kg). Check the marking on the sleeve or collar and enter that weight.

What plate sizes are included?

Pound mode uses: 45, 35, 25, 10, 5, 2.5 lb. Kilogram mode uses: 20, 15, 10, 5, 2.5, 1.25 kg. These are the standard IPF and commercial gym plate sets.

What if the target weight is not achievable with standard plates?

The calculator rounds down to the nearest achievable weight and shows you the actual loaded weight. It also displays the remaining gap so you know what is missing.

Why does it show plates per side and not total plates?

Barbells are loaded symmetrically — each side always carries half the plate weight. Showing plates per side directly tells you what to pick up and where to put it.

Can I use fractional plates like 1.25 lb or 0.5 kg?

The calculator uses the standard plate denominations. Fractional plates smaller than 2.5 lb or 1.25 kg are not included since they are not universally available.

Does the collar weight count?

Collars are typically not counted in competition or casual training. If you use heavy spring collars or competition collars that add significant weight, subtract their weight from the barbell weight field.

Barbell Plate Loading Calculator

Name: Barbell Plate Loading Calculator
Availability: InStock
Author: Nham Vu

Enter your target lift weight and barbell weight to instantly see which plates to load on each side — in lb or kg.

Barbell Setup

Unit System

Barbell Weight (lb)

Target Lift Weight (lb)

Total weight on the bar including the barbell.

Enter a target weight to see the plate breakdown.

Summary

Enter your target lift weight and barbell weight to instantly see which plates to load on each side — in lb or kg.

How it works

Select your unit system: lb (pounds) or kg (kilograms).
Enter the weight of your barbell (default: 45 lb or 20 kg).
Enter your target total lift weight (barbell + all plates combined).
The calculator subtracts the barbell weight to find the total plate weight needed.
It divides that by two to get the weight per side.
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

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Last updated: 2026-05-29 · Reviewed by Nham Vu