Training Max Calculator
A training max is a conservative reference used to calculate programmed weights. It is not a prediction that you should test every workout. Select the percentage required by your specific program.
How the calculation works
Multiply the current one-rep max by the program's training-max percentage, then round to an increment that can be loaded consistently. For example, 315 × 90% equals 283.5, which rounds to 285 when using five-unit increments.
Use the percentage specified by the exact template or original program source. A higher training max is not automatically a better starting point; it reduces the margin available for clean repetitions and future progression.
When to change a training max
Change it according to the program's progression or testing rules, not in response to a single unusually good or bad workout. If a program includes a training-max test, use the required repetition quality and target rather than treating it as an unrestricted one-rep-max attempt.
Persistent missed work, technique breakdown, or incomplete recovery is a reason to review the training max and the surrounding workload. It is not a reason to hide the problem by changing unrelated exercises every week.
Put the training max into a complete program
KeyLifts applies your training max to a prebuilt or custom schedule and prepares the weight for every programmed set.
Calculator reviewed August 29, 2026. This tool performs arithmetic and does not provide individualized medical or coaching advice.