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Warm-Up Set Calculator

Plan warm-up sets that prepare you for your top working load.

How it is calculated

The tool takes one number, working_weight, the load of your top set, and multiplies it by four fixed percentages: set 1 = W × 0.40, set 2 = W × 0.55, set 3 = W × 0.70 and set 4 = W × 0.85. Each result is rounded to two decimals and labelled kg, so enter the working weight in kilograms; if you enter pounds, read the answers as pounds. The percentages are fixed. The tool does not choose reps, does not count the empty bar, and does not round to loadable plates, so the numbers can come out as 56.38 kg and have to be adjusted to the nearest weight you can build. Zero or negative weights return no result.

Worked example

Your working set is 102.5 kg. Set 1: 102.5 × 0.40 = 41.00 kg. Set 2: 102.5 × 0.55 = 56.375, shown as 56.38 kg. Set 3: 102.5 × 0.70 = 71.75 kg. Set 4: 102.5 × 0.85 = 87.125, shown as 87.13 kg. In the gym you would round these to what the plates allow, for instance 40, 55, 72.5 and 87.5 kg, then take the 102.5 kg working sets. The ramp is four lighter sets, each a similar size step toward the top weight.

Try this example →

Common mistakes

  • Entering your one-rep max instead of the working weight. The percentages are taken from the number you type, so a 140 kg max would give warm-ups for a 140 kg set, not for the 105 kg you will actually train with.
  • Loading the exact decimals. 56.38 kg is not a weight you can build; round to the nearest plate combination, and round consistently so the steps stay similar.
  • Forgetting the bar. The first step may be lighter than a 20 kg bar, in which case start with the bar and drop that set rather than loading a negative amount.
  • Mixing units. The answers are labelled kg, so entering pounds gives pound values with a wrong label.
  • Doing every set for many reps. These are only the loads; keep reps low on the heavier steps so warm-up does not tire you out.

About this calculator

A ramp-up warm-up builds toward a working weight through a series of progressively heavier sets at fixed percentages of that top weight — commonly around 40%, 55%, 70% and 85% — rather than jumping straight from the bar to a heavy working set, which both primes the neuromuscular system to produce force at higher intensities and lets you groove technique at increasing load before it matters most.

Powerlifters, weightlifters and general strength trainees use a structured percentage-based ramp because guessing at warm-up jumps either wastes energy with too many unnecessary sets or under-prepares the nervous system by jumping too large a percentage between steps — a consistent ramp scheme also makes warm-up time predictable, which matters under a meet clock or a busy gym.

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