Progressive Overload Calculator Formula
Understand the math behind the progressive overload calculator. Each variable explained with a worked example.
Formulas Used
Target Weight After Period
target_weight = current_weight * pow(1 + weekly_increase_pct / 100, weeks_ahead)Total Increase
total_increase = current_weight * pow(1 + weekly_increase_pct / 100, weeks_ahead) - current_weightFirst Week Increase
weekly_add_lbs = current_weight * weekly_increase_pct / 100Variables
| Variable | Description | Default |
|---|---|---|
current_weight | Current Working Weight(lbs) | 200 |
weekly_increase_pct | Weekly Increase Rate(%) | 2.5 |
weeks_ahead | Weeks to Project(weeks) | 8 |
How It Works
Progressive Overload Principle
Progressive overload is the gradual increase in stress placed on the body during training, essential for continued strength and muscle gains.
Formula
Target Weight = Current Weight x (1 + Weekly Rate)^Weeks
A 2-5% weekly increase in load is typical for intermediate lifters. Beginners can progress faster (5-10%), while advanced lifters may only manage 1-2% per week or less.
Worked Example
Currently squatting 200 lbs, increasing 2.5% per week for 8 weeks.
- 01Target = 200 x (1.025)^8 = 200 x 1.2184 = 243.7 lbs
- 02Total increase = 243.7 - 200 = 43.7 lbs
- 03First week add = 200 x 0.025 = 5.0 lbs
Frequently Asked Questions
How much should I increase each week?
Beginners: 5-10 lbs per session on compound lifts. Intermediate: 2.5-5% per week. Advanced: 1-2% per week or less. Use microplates (1.25 lb) for upper body lifts.
What if I stall?
If you cannot complete the target reps at the new weight for two consecutive sessions, deload by 10% and build back up. This is normal and part of the process.
Is overload only about weight?
No. You can also overload through more reps, more sets, shorter rest periods, slower tempo, or better range of motion. Weight is the most common variable to manipulate.
Ready to run the numbers?
Open Progressive Overload Calculator