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Barbell Plate Calculator

A plate calculator splits (target − bar) across two sides using a greedy stack of gym plates. Kilograms: 25, 20, 15, 10, 5, 2.5, 1.25. Pounds: 45, 35, 25, 10, 5, 2.5. The bar drawing shows one side; load the mirror image on the other.

Quick Summary & Direct Answer
Converters

How do you load 100 kg on a 20 kg bar?

80 kg of plates, 40 kg per side: one 25, one 10, one 5. Leftover 0. The visual shows those discs from the collar inward.

Key Takeaways

  • Greedy largest-first.
  • Change plates if a gym lacks 1.25 kg.
  • Collar weight is omitted.

Loaded

100 kg

Leftover0 kg
25 × 1 / side50 kg
15 × 1 / side30 kg

Results can be wrong. This calculator is unofficial. Figures can be incomplete, rounded, or not updated. Use them at your own risk and check a tape, datasheet, ball band, or official chart before cutting, mixing, buying, or publishing. Gyms omit small change plates. The leftover field is weight this stack cannot hit exactly. Limits of liability are in the terms of service.

Frequently asked questions

Close, not exact. Switch the unit toggle rather than mixing.

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Publisher notes · reviewed 29 October 2026

Per side is half of target minus bar

Greedy plates: kg 25 down to 1.25, lb 45 down to 2.5. 100 kg on a 20 kg bar is 25+10+5 each side. Collar mass is omitted. The drawing is one side; mirror it.

Missing plates

If a gym has no 1.25 kg, leftover mass stays on the card. Change the target.

Worked examples

  • 100 kg / 20 kg bar

    40 kg per side: 25, 10, 5.

Limits of this page

  • Competition colour codes are not applied.
  • Safety squat and trap bars use a different bar mass the user must type.

Sources