Workout Volume Calculator - Session Tonnage & Estimated 1RM

How to use this tool

1. Choose units and enter an exercise. Select kilograms or pounds, name a movement, and optionally assign one primary muscle group.
2. Enter each set. Add the weight and reps for every set. Add rows for different loads and add another exercise when needed.
3. Set a weekly frequency. Choose how many similar sessions you expect in a week to see a clearly labeled tonnage and tagged-set projection.
4. Review or copy the summary. Compare per-exercise volume shares and estimates, then use Copy summary to place the results on your clipboard.

What is workout volume?

Workout volume load (often called tonnage) is the sum of the weight lifted across repetitions in a session. This calculator handles each set separately:

Volume load = Σ (weight × reps) across valid sets

The shortcut weight × reps × sets gives the same answer when each set uses the same load and rep count. Adding each set separately also handles drop sets or other sessions where weight or reps change from one row to the next.

For example, 3 sets of 5 reps at 100 kg = 1,500 kg of total volume (tonnage). Comparing similar sessions over time can help you notice changes in training workload.

Tonnage is only one way to describe training. It does not measure effort, range of motion, technique, or how close a set came to failure. Bodyweight and assisted movements need an explicit load equivalent to be reflected in the total.

Why track volume?

Research consistently shows that total weekly volume is a key driver of hypertrophy (muscle growth) and strength gains. By tracking volume, you can ensure you're progressively overloading your muscles over time, even if the weight on the bar doesn't increase every session.

Estimated one-rep max (1RM)

This calculator uses the Epley formula to estimate your theoretical one-rep maximum from any set:

1RM = Weight × (1 + Reps / 30)

The estimate is most useful as a rough guide for sets of about 2–10 reps. It becomes less dependable above about 10 reps, especially for very high-rep sets (15+).

The calculator flags exercises with sets above 10 reps and links to the One-Rep Max Calculator for additional estimation methods. Any formula still gives an estimate rather than a tested maximum.

Volume guidelines

These general weekly set ranges are educational reference points. This tool counts tonnage and optional sets for one selected primary muscle group; it does not decide whether a set was hard enough to count toward an individual program.

• Maintenance: ~10–12 sets per muscle group per week
• Hypertrophy: ~15–20 sets per muscle group per week
• Strength: ~5–10 heavy sets per muscle group per week

Periodization and volume progression

Continuously adding volume leads to overtraining. Common structured approaches:

• Linear progression: add weight or reps each session; works well for beginners.
• Wave loading: increase volume over 3 weeks, then take a deload week at ~60% volume before starting the next wave.
• Block periodization: dedicate training blocks to hypertrophy (high volume), then strength (moderate volume), then power (low volume, heavy).
• 10% rule: do not increase total weekly volume by more than 10% per week to manage injury risk.

Optimal volume ranges by muscle group

Based on Schoenfeld (2017) meta-analysis on volume–hypertrophy dose-response.

Recovery and deload guidance

• Deload every 4–8 weeks: reduce total volume by 40–60% (same exercises, fewer sets or lighter load) to allow accumulated fatigue to dissipate.
• Signs you need a deload: persistent soreness lasting more than 3 days, declining performance across multiple sessions, disrupted sleep, or low motivation to train.