Warm-Up Set Weight Calculator

This calculator converts a planned working weight into a clear sequence of lighter loads. Enter the weight you intend to use, keep the default progression or supply your own percentages, and choose the smallest increment your equipment allows. The result shows both the exact percentage target and the practical rounded load for every set, so you can prepare plates, dumbbells, or machine settings before training begins.

Start with the load that matters

The working weight is the load planned for the main sets of one exercise, not a one-repetition maximum and not the total weight lifted across a session. If the program says three sets of five at 100 kilograms, enter 100 as the working weight. The calculator applies each warm-up percentage to that number. Its default sequence is 40%, 55%, 70%, 80%, and 90%, which creates gradually smaller jumps as the working load approaches. Those defaults are a practical planning template rather than a medical or coaching prescription. Training history, exercise complexity, fatigue, injury status, temperature, and the demands of the first working set may all justify a different progression. Use the same unit throughout: an input of 100 kilograms with a 2.5 increment produces kilogram loads, while an input of 225 pounds with a 5 increment produces pound loads. The output intentionally does not attach repetitions, rest periods, or effort targets, because those choices belong to the training plan and cannot be inferred safely from weight alone.

Understand exact targets and usable loads

Each result contains an exact target weight and a rounded load weight. The exact target is simply the working weight multiplied by the percentage and divided by 100. Real equipment often cannot reproduce that value, so the calculator rounds it to the nearest multiple of the chosen increment. A target of 67.5 with a 5-unit increment becomes 70; a target of 66 becomes 65. When the target lies exactly halfway between two increments, the higher load is selected. This explicit rule makes the result deterministic and prevents two clients from producing different plans. Choose an increment that represents the smallest total change you can actually load, rather than the number printed on one plate. With a barbell, adding one 1.25-kilogram plate to each side changes the total load by 2.5 kilograms, so the increment is 2.5. For selectorized machines or fixed dumbbells, use the gap between neighboring settings or implements. Always check that the rounded load is physically available and appropriate before lifting.

Customize the progression without hiding assumptions

You may replace the default percentages with any strictly ascending list containing up to twenty values. Every percentage must be greater than zero and no greater than 100. Ascending order matters because the output is a progression toward the working set; repeated or falling percentages usually signal a data-entry mistake, so they are rejected instead of silently rearranged. A shorter sequence may suit a lighter or familiar movement, while a longer sequence can make sense before a heavy compound lift. For example, 30%, 50%, 65%, 75%, 85%, and 95% gives six increasingly specific exposures. The calculator reports percentages exactly as supplied and never invents repetitions or changes a percentage to compensate for rounding. Two adjacent targets can occasionally round to the same available load when the equipment increment is coarse. That is mathematically valid, but it may not be useful in practice; review the scheme and remove a redundant step or choose percentages farther apart. Stop if warming up causes pain, unusual dizziness, or symptoms that require qualified medical attention.