Free strength calculator
Training Volume Calculator
Enter your weekly hard sets for each muscle and see which groups are below the volume that drives growth, in the productive range, near your recovery ceiling, or past it.
Count the working sets you take close to failure each week — warm-ups don't count. Fill in the muscles you train; leave the rest blank.
Enter your weekly sets above to see where each muscle sits — below the growth floor, in the productive range, near your recovery ceiling, or past it.
Free. No signup. The tool's own usage events never include your exact counts; a share link encodes them into its URL.
These ranges are general starting points from training-volume research, not medical or coaching advice. Recovery varies from person to person — adjust to how you actually feel and progress.
How training volume works
Volume is the main dial for muscle growth — and it's measured in hard sets per week. For a given muscle, the number of working sets you take close to failure each week predicts how much it grows better than almost anything else you can change. Do too few and you maintain; do enough and you grow; do far too many and you just dig a recovery hole. This tool places each muscle on that curve.
The tool marks four points on that curve for each muscle: a growth floor (around the minimum effective volume) below which you mostly maintain, the productive range most people grow well in, a high-volume zone above that range where recovery starts to matter more than extra sets, and a recovery-risk line (around the maximum recoverable volume) past which more work tends to cost more than it adds. Enter your sets and each muscle is sorted into below the floor, productive, near your ceiling, or over the top — with a concrete next-step target.
The honest caveat: these are population starting estimates, not personal truths. Your own minimum and maximum move with your training age, how hard you push each set, sleep, nutrition, and stress. And muscles differ in how much evidence backs them — the big, directly-trained ones are well studied; smaller or indirectly-trained ones are not. Use the tool to catch obvious gaps and excesses, then let your own recovery and progress fine-tune the numbers.
Weekly set ranges by muscle
The productive weekly-set range for each muscle — where most people grow well. The calculator also uses a lower growth floor and a higher recovery-risk line around this range; enter your own sets above to see which side of those each one lands on.
| Muscle | Productive sets/wk | Notes |
|---|---|---|
| Chest | 8–16 | Pressing and fly work that targets the chest. Bench and dips already cover a lot of it. |
| Back | 10–20 | Rows, pulldowns, and pull-ups together — several muscles bundled into one group, so it tolerates more. |
| Shoulders | 8–16 | Mostly side and rear delts — front delts already get plenty from pressing, so direct work needs less than people think. |
| Biceps | 8–16 | Direct curls, plus the pulling volume that already trains them — count rows and pull-ups as partial work. |
| Triceps | 8–18 | Direct extensions, plus a lot of indirect work from pressing — they tolerate moderate-high volume well. |
| Quads | 10–18 | Squats, leg press, and extensions. Some of the best volume evidence of any muscle. |
| Hamstrings | 8–16 | Hinges and leg curls. Squats alone aren't enough — easy to under-train if you only squat. |
| Glutes | 10–20 | Picks up large indirect volume from squats, hinges, and lunges; direct hip-thrust work is a top-up. |
| Calves | 8–16 | Almost entirely direct work — rarely trained as a by-product of anything else. Under-studied, so treat loosely. |
| Abs | 6–12 | Count hard loaded ab work, not the bracing on heavy lifts. Direct evidence here is thin. |
| Forearms | 6–12 | Trained by every grip-heavy pull; direct work mostly fills gaps. A rough estimate — direct evidence is thin. |
| Lower back | 4–8 | Counts direct back extensions. Deadlifts, squats, and rows already load it heavily, so be conservative. |
This is the range most people grow well in. There's a lower floor below it where training still works but growth is less reliable, and a higher recovery-risk line above it where extra sets start costing more fatigue than they return — the calculator shows you which side of those lines your own numbers fall on. Most lifters do well aiming for the middle of the productive range and adjusting from there. The ranges for smaller, indirectly-trained muscles — forearms, calves, abs, lower back — rest on thinner direct evidence, so treat those as rougher estimates.
What each status means
Below target. Your weekly sets are under the minimum that reliably drives growth for that muscle. You're likely maintaining rather than building. If growth there is a goal, add sets gradually toward the productive range.
Productive. You're above the growth floor and at or below the top of the productive range — where most muscles should sit. If you're under the bottom of the range it still counts, just on the low side, and nudging up gives most people more room to grow.
Near your ceiling. You're close to the most volume a typical lifter recovers from. That can be the right place during a hard training block, but watch your sleep, joints, and performance — and don't keep climbing indefinitely.
Over the top. Your sets are above the range most people recover from. The extra work is likely adding fatigue rather than growth. Trimming back toward the productive range often improves results, not hurts them.
Common mistakes with volume
- Counting easy sets as hard sets. Only sets taken close to failure drive much growth. If you pad your count with warm-ups and easy sets, you'll think you're doing more effective volume than you really are.
- Forgetting indirect volume. Your arms, glutes, and lower back already get real work from rows, presses, squats, and deadlifts. Piling on direct sets for them on top of heavy compound work is an easy way to overshoot.
- Chasing ever-higher volume. More sets help only up to the volume you can recover from. Past that, you're buying fatigue, not muscle. The most sets is not the goal.
- Cramming a week into one session. Doing all of a muscle's weekly sets in a single workout means the later sets are low quality. Spreading them across two or three sessions usually works better.
- Treating the numbers as exact. These are population estimates with real person-to-person spread. They're a map, not a verdict — let your own recovery and progress be the final word.
Methodology
Each muscle gets two boundary lines and the bands between them: a growth floor (around the minimum effective volume), then the productive range, then a high-volume zone, up to a recovery-risk line (around the maximum recoverable volume). The numbers for the big, directly-trained muscles draw on dose-response research relating weekly sets to muscle growth; the numbers for smaller and indirectly-trained muscles — forearms, calves, abs, lower back — rest on much thinner direct evidence and should be treated as rougher. Volume here means hard sets per muscle per week, the measure most consistently tied to growth in that literature.
We deliberately ship a single defensible range per muscle rather than a precise per-person prescription. The widely-copied per-muscle volume charts online trace largely to expert estimates rather than hard data, individual recovery varies substantially, and what counts as a set depends on how close to failure it is taken. A tool that implied more precision than the evidence supports would be misleading. The status and target are starting points to reason from, not limits to obey.
The calculation runs entirely in your browser. The tool's own usage events only ever send coarse buckets — a bucketed weekly total and how many muscles fall below or above their range — never your exact per-muscle counts. If you use the share button, your entered counts are encoded into that link so the page can rebuild your result; that link then sits in your address bar like any other URL. This is a training utility, not medical or coaching advice; build volume gradually and adjust to how you actually recover.
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Browse exercisesFrequently asked questions
What is training volume?
Training volume is how much work you do for a muscle. The most practical measure is weekly hard sets — working sets taken close to failure for that muscle across a week. It's the biggest training lever for growth: within reason, more hard sets means more growth, up to the point where you can't recover from the extra work.
What counts as a hard set?
A hard set is a working set taken close to failure — the last few reps are genuinely tough, with roughly 0 to 3 reps left in reserve. Warm-ups, easy back-offs, and sets stopped well short of failure don't count, because they drive little adaptation. Count only the sets that were actually hard.
What do MEV and MRV mean?
MEV is minimum effective volume — the fewest weekly hard sets that still drive growth. MRV is maximum recoverable volume — the most you can recover from before extra work stops paying off. This tool turns those into four lines per muscle: a growth floor (around MEV), a productive range most people grow well in, a high-volume zone above it where recovery starts to matter more, and a recovery-risk line (around MRV) past which more sets likely cost more than they add. They're population estimates that vary a lot by person — starting points, not personal limits.
Do compound lifts count toward more than one muscle?
Yes — and this is where counting gets fuzzy. A row trains your back directly but also works biceps and forearms; a squat hits quads but also loads glutes, lower back, and core. A common convention is to count a set fully for the target muscle and as a half set for muscles it hits indirectly. Enter the sets you'd reasonably attribute to each muscle — and remember arms, glutes, and lower back already get a lot of work from your big lifts.
How accurate are the volume landmarks?
They're informed estimates, not exact numbers. The ranges for big, directly-trained muscles (chest, back, quads) rest on dose-response research; the ranges for smaller or indirectly-trained muscles (forearms, calves, abs, lower back) rest on much thinner evidence, so treat those as rougher. Your own limits also shift with training age, sleep, nutrition, and effort. Use the ranges to spot gaps and excesses, then adjust to how you recover.
Is more volume always better?
No. Volume helps up to a point, then stops paying off and starts costing you. Past the volume you can recover from, extra sets add fatigue and can slow progress — there's no prize for the most sets. More volume only helps if the sets are hard and your recovery can support them. Aim for enough to grow, spread across the week, not the most you can survive.
How should I spread these sets across the week?
Splitting a muscle's weekly sets across two or three sessions usually beats cramming them into one — you do each set fresher and spread the recovery demand. If a muscle's weekly target is twelve sets, six twice a week or four three times a week tends to beat twelve in one brutal session. Frequency is how you fit the volume in; the weekly total is what mainly matters.
Is this a training program?
No. It's a free utility that compares your weekly sets to general ranges from training research — not a personalized program, and not medical or coaching advice. It won't pick your exercises, periodize for you, or manage an injury. Use it as a quick sanity check on whether a muscle is getting far too little or far too much, then change things gradually.
Track your volume without the spreadsheet
This tool checks one week at a glance. Stronger logs every set you do and tallies your weekly volume per muscle automatically, so you always know where you stand.
