Calculate conservative 80%, 85%, and 90% training maximums. Enter a tested or estimated maximum to calculate conservative working weights.
Complete the form and select “Calculate result.” Your measurements never leave this page.
A transparent overview of the inputs, method, and appropriate interpretation.
It applies conservative percentages to an estimated one-repetition maximum to create repeatable working references for programming.
Percentage-based training maximumClear answers to help you understand and use your estimate.
Yes. It is free, runs in your browser, requires no account, and does not store the measurements you enter.
No. This result is an educational estimate, not a diagnosis or treatment recommendation. A qualified professional can interpret it within your complete health and training context.
Readiness, exercise variation, equipment, technique, and how the original maximum was measured can change the appropriate training load.
Update when your estimated one-repetition maximum changes or your training programme calls for a new reference.
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