Free Tool
Workout Volume Calculator
Add your exercises with sets, reps, and weight. We'll calculate the volume for each exercise and your grand total for the session.
Hercules calculates your volume automatically — by exercise, muscle group, and over time — every time you log a workout.
Download on Google PlayWhat is workout volume?
Workout volume is a measure of the total mechanical work performed in a training session, calculated as sets multiplied by reps multiplied by the weight used. For example, three sets of ten reps at 100 lbs equals 3,000 lbs of volume for that exercise. Volume is one of the best-supported variables for driving muscle growth — more volume, up to your recoverable limit, generally means more adaptation. Tracking it lets you apply progressive overload deliberately: if you lifted the same weight for the same reps last week, adding a set or a small weight increase is measurable progress. Without tracking volume, it is easy to feel like you are training hard while your numbers stagnate.
Frequently Asked Questions
What is training volume?
Training volume is the total amount of work performed in a session or over a week, typically measured as sets × reps × weight. It is one of the primary drivers of muscle growth and strength adaptation, and it can be tracked per exercise, muscle group, or total workout.
How is workout volume calculated?
Workout volume for a single exercise is calculated by multiplying the number of sets by the number of reps by the weight lifted: Volume = Sets × Reps × Weight. Total workout volume is the sum of volume across all exercises in the session.
Why does volume matter for muscle growth?
Volume is one of the key mechanisms for driving hypertrophy (muscle growth). Higher volumes generally produce more muscle-building stimulus, up to a recoverable limit. Tracking volume over time lets you apply progressive overload systematically rather than guessing.
How much volume should I do per week?
Research commonly cites 10–20 hard sets per muscle group per week as an effective range for hypertrophy, though individual recovery capacity varies. Beginners typically respond well to lower volumes (10–12 sets), while more advanced lifters may require and recover from higher volumes.