How to Use the Warm-Up Set Weight Calculator
Jumping straight to your working weight leaves your joints and nervous system unprepared, which raises injury risk and often leaves you underperforming on your first heavy set. This calculator takes your working weight and target reps, then builds a four-step warm-up ramp at 40%, 60%, 80%, and 90% of that weight with progressively fewer reps.
Early warm-up sets use light weight for higher reps (8), while later sets increase the load and drop to a single rep, gradually priming your nervous system for the intensity of your top set. Every weight is rounded to the nearest 5 lb so it's actually loadable on the bar.
You don't need to run all four steps every session. If your working weight is light, or you're already warm from an earlier exercise, feel free to skip the earliest sets. If you're approaching a personal record or a genuinely heavy top set, working through the full sequence in order is the safer choice — leave a minute or two of rest between the later warm-up sets on big compound lifts like the squat, deadlift, or bench press so your joints have time to adapt.
Frequently Asked Questions
Warm-up sets use 40%, 60%, 80%, and 90% of your working weight for 8, 5, 3, and 1 reps respectively, gradually ramping intensity up before your top set at your full target weight and reps.
If your working weight is light or you're already warm from another exercise, you can skip the earliest, lightest sets. If your working weight is close to your personal max, it's safer to run through all four steps.