Strength
Workout Volume Calculator
Calculate total weekly training volume (sets × reps × weight) and compare against optimal hypertrophy ranges per muscle group.
Result
- Chest: 4 sets · 2,560 kg6 short
Sets per muscle group
Working sets this week; 10–20 per muscle is the target range.
How to use it
- Enter each exercise you do this week: the muscle group it trains, its working sets across the whole week, reps and weight (0 for bodyweight), and use Add exercise for the rest. Weekly sets per muscle group is the primary variable driving hypertrophy — this calculator totals them and shows how far each muscle is from the range.
- Evidence-based volume ranges: 10–20 sets per muscle per week covers the effective range for most people (Schoenfeld, Ogborn & Krieger 2017). Below 10 sets a week is a low dose for most intermediates; above 20, returns diminish and recovery gets harder.
- Beginners often grow well on the lower end of the range, and more experienced lifters may need more. Raise volume gradually over months and years, not all at once.
- When weekly volume is equal, training a muscle once, twice or three times a week builds similar muscle (Schoenfeld 2019). Spreading sets over 2-3 sessions mainly helps keep each set high quality.
- If progress stalls: add 2 sets per muscle group per week for 4 weeks, then reassess. If recovery degrades (soreness lasting >72 hours, declining performance), reduce volume rather than pushing through — overreaching delays progress more than it accelerates it.
Questions people usually ask
What is training volume?
Training volume is the total amount of work performed, typically measured as sets × reps × weight. It's a key driver of muscle growth and strength adaptation.
How many weekly sets per muscle group is optimal?
In Schoenfeld, Ogborn and Krieger's 2017 meta-analysis, 10 or more weekly sets per muscle group produced more growth than fewer; most programmes work in roughly 10 to 20 hard sets. Beginners respond to the lower end, and advanced lifters may need more.
Does volume load matter more than number of sets?
Both are worth tracking. Hard-set counts are the unit most hypertrophy research uses, while volume load (sets × reps × weight) reflects how much weight you moved and rises with heavier training. This tool shows both.
Should I count warm-up sets?
No. Only count working sets taken close to failure. Warm-up sets don't contribute meaningfully to hypertrophy stimulus.
Is this tool free and private to use?
Yes. AI Fit Hub tools are free, no-signup browser tools. Inputs stay in your browser unless you choose to share a URL.
The formula, worked through
- Formula Workout Volume Formula
Workout volume formula: volume load = sets × reps × weight. Hard sets = total sets within 2 reps of failure per muscle group per week.
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Background on the Workout Volume Calculator
- Comparison Full Body vs Split Routine
Full body vs split routine: how often each trains a muscle, what the frequency research says at equal volume, and which fits 2-3 versus 4-6 training days.
- Statistics Gym Membership Statistics: US Trends and Demographics
Gym membership statistics from the Health & Fitness Association (formerly IHRSA): US member counts, growth and demographics, each with its source.
- Learn What Is Training Frequency? Simply Explained
Training frequency is how often a muscle or lift is trained per week. What it is, what matters once weekly volume is equal, and how to set it.
- Statistics Home Gym Statistics: Adoption, Outcomes, & Equipment
Home gym statistics: how band, bodyweight and home-based training compare with gym training, home rehabilitation results and what keeps people training.
- Statistics Flexibility Statistics: Norms, Methods & Effects
Flexibility statistics: range-of-motion norms, stretching methods compared, changes with age and links to injury, each figure with its source.
- Statistics Mobility & Injury Statistics: Risk Factors and Outcomes
Mobility and injury statistics: how common injuries are, risk factors, what interventions achieve and recovery times, each figure with its source.
Articles
- 11 min read Training to Failure vs Reps in Reserve: What Works
Training to failure vs reps in reserve, reviewed: Robinson 2024 recasts the binary debate as a continuous proximity curve where size and strength diverge.
- 9 min read How Many Sets Per Week for Hypertrophy? 10-20 Per Muscle
How many sets per week for hypertrophy: 10-20 hard sets per muscle. Pelland 2026 (67 studies) shows growth keeps rising past that, with diminishing returns.
- 11 min read Light vs Heavy Weights for Muscle Growth: The Evidence
Light vs heavy load for muscle growth: the Schoenfeld 2017 meta, Morton 2016, and Lasevicius 2018 show similar hypertrophy to failure, load wins 1RM.
By goal
Use it from an agent or code
Any agent can run this calculator by URL: put the inputs in the query string and get JSON back, with the inputs that used defaults and a line to cite (add format=md for markdown). MCP clients reach it through https://aifithub.io/mcp.
https://aifithub.io/api/run/workout-volume-calculator
In code, import the same module; it runs where you import it, with no request or key.
import { compute } from "https://aifithub.io/engines/workout-volume-calculator.js";Input and output contract, TypeScript types and the guide for agents.