Weekly Training Volume Calculator (Hard Sets)

Estimate weekly hard sets per muscle group and check it against the recommended 10–20 sets/week range for hypertrophy.

What this calculator does

Estimate your weekly hard sets per muscle group and check it against the evidence-based 10–20 hard sets/week range that drives most hypertrophy.

'Hard sets per muscle per week' is the most useful single volume metric for hypertrophy. It's what current literature (Schoenfeld and others) uses, and it's what coaches actually program around. A hard set means a working set taken within 1–3 reps of failure (RPE 8+). Warm-ups, half-effort sets, and pump-only sets don't count — they're not the stimulus that drives growth.

How to use it

For each muscle group, count only working sets — not warm-ups.
Sum across all sessions in a typical week.
Check the band: < 10 is maintenance, 10–20 is the sweet spot, > 25 risks junk volume for most lifters.
Re-check every 4–6 weeks. Volume needs change as you progress.

Formulas

Hard set

A working set taken within 1–3 reps of momentary failure (RPE 8–10). Warm-ups and back-off sets that stop ≥4 reps short don't count.

Direct vs indirect

Compound lifts hit several muscle groups. Conservative practice: count fully toward the primary muscle, half-count for clearly involved secondary muscles.

Limitations and caveats

10–20 is a population average, not your number. Beginners often grow on 8–10; advanced lifters sometimes need 16–22.
Volume above 20 per muscle without periodization tends to outpace recovery — strength stagnates first, soreness lingers.
Frequency matters: 16 sets across 2 sessions usually beats 16 sets in one session for the same muscle.

Worked examples

Example 1

A lifter performs an upper-body workout twice weekly, including 4 sets of bench press and 3 sets of incline press in each session.

Calculation. To find their weekly chest volume, add the sets from both sessions: (4 + 3) + (4 + 3) = 14 sets.

Takeaway. This lifter’s 14 weekly sets for chest falls within the recommended 10–20 set range for muscle growth.

Example 2

A lifter follows a 3-day full-body routine, including 5 sets of squats on Monday, 4 sets of leg presses on Wednesday, and 5 sets of squats on Friday.

Calculation. Summing the sets for their quads across the week gives a total of 5 + 4 + 5 = 14 sets.

Takeaway. At 14 sets, this lifter has a solid foundation for quad growth and can adjust based on recovery.

Common mistake: Counting warm-up sets contributes to an inflated and inaccurate weekly volume.

Fix. Only include your 'hard sets,' which are working sets taken close to muscular failure (typically with 0–3 Reps in Reserve). Warm-up sets do not provide a strong enough stimulus to be included in this total.

Source: Dose-response relationship between weekly resistance training volume and increases in muscle mass: A systematic review and meta-analysis.

Frequently asked questions

Do I count compound lifts toward multiple muscles?

Yes, but conservatively. A bench press counts fully toward chest and triceps and roughly half toward shoulders. A row counts fully toward back and roughly half toward biceps.

What about isolation work like curls or lateral raises?

Those count fully toward the primary muscle. They're the easiest to add or subtract when balancing weekly volume.

How fast should I add volume?

Add 1–2 sets per muscle per week, only if recovery is keeping up. If sleep, soreness, or strength stalls, you've added too much.

Is more volume always better?

No. Past your minimum effective volume, returns diminish quickly. Past your maximum recoverable volume, results invert — you start losing strength and size.