FREE TOOL · NO SIGNUP
Barbell plate calculator
What to load on each side, using only the plates your gym actually has.
Every bar, every session, without the arithmetic.
Antaeus carries your gym's plate inventory and does this for every set you log — including the warmup ladder up to your working weight.
Join the beta See how it worksQuestions
Why does it ask which plates I own?
Because the answer changes. A gym without 15s loads 47.5 kg differently, and a calculator that assumes a full rack sends you looking for a plate that is not there.
What does “off by” mean?
Your plates cannot make that exact number. Rather than round silently, the tool loads the closest weight below it and tells you the gap.
Does it handle kg and lb bars?
Yes — switch units and the plate list and default bar switch with it, 20 kg or 45 lb.