Rest Period Calculator
How long to rest between sets, based on your goal, the lift, and how heavy you are going.
Fill in the form and your result lands here.
Learn the details
The base ranges here are 3 to 5 minutes for strength, 2 to 5 minutes for power, 60 to 90 seconds for hypertrophy, and 30 to 60 seconds for endurance. Higher set intensity pushes the recommendation toward the top of the range, and compound lifts add another 30 to 60 seconds on top.
Rest is the least glamorous variable in a workout and one of the easiest to get wrong. Here is what those minutes are actually doing, what the research changed about them, and how to cope when you do not have them.
What rest is actually for
A hard set drains a fast energy store called phosphocreatine, the fuel your muscles lean on for roughly the first ten seconds of all-out effort. It also leaves fatigue behind in the muscle itself and in the nervous system that told it to fire. Rest is the window where that gets undone. Phosphocreatine comes back about halfway in the first thirty to sixty seconds and most of the way in around three minutes. Cut that window short and the next set is not really a set, it is a tired repeat of the last one.
What to rest, by goal
That is why the recommendations climb as the load does. Endurance work at light weights sits around 30 to 60 seconds, hypertrophy work starts from a 60 to 90 second base, strength work wants 3 to 5 minutes, and power sits at 2 to 5. Compound lifts add another 30 to 60 seconds on top, because a squat fatigues far more of you than a curl does. Strength is where beginners undershoot hardest. Three minutes of standing around feels absurd if nobody has explained that it is the point, so people trim it to sixty seconds and then wonder why the fifth set is lighter than the first.
A worked example
Leave the tool on its defaults, hypertrophy, compound, 75 percent of your one rep max, and it returns about 2m 2s with a range of 1m 33s to 2m 30s. That is the 60 to 90 second hypertrophy base, scaled up because 75 percent is a genuinely heavy working load, then given the compound bump. Switch the goal to strength at 85 percent and the same lift asks for more than five minutes.
The correction to old advice
Bodybuilding advice used to say keep rests short and chase the pump, on the theory that metabolic stress is what drives growth. The trials that put long rests against short ones in trained lifters have mostly gone the other way. Around three minutes tends to beat around one minute for size, not only for strength, and the likely reason is unglamorous: with more rest you complete more good reps at a given weight, and total quality work is what the muscle responds to. That is a trend across a modest set of studies, not a settled fact, but if you must err, err long.
When the session is short
When the clock is the real constraint, do not shave the big lifts. Protect the rest on your heaviest compound movement and take the time out of accessory work instead. Supersets are the other lever, meaning two exercises run back to back with no rest in between. Pair non-competing movements so the second does not need the muscle the first just fried: a row with a chest press, a calf raise with a curl. That buys back real time without turning both sets into cardio, though pairing two heavy squat patterns will not work. For the rep ranges these rests attach to, the rep range guide lays out the whole continuum. And if you feel faint or unwell between sets rather than simply tired, stop and talk to a doctor.
Sources: ACSM progression models position stand
If in doubt, rest longer on compounds and shorter on isolation work. Most beginners rest too little on the big lifts, so adjust upward if you feel under-recovered between sets.