Progressive Overload Calculator
Know when it's time to go heavier. Enter your last two sessions and get a clear answer, add weight or stay, plus how much to add.
Your details
Your results
Enter your weight, target reps and the reps you got on your last set in your last two sessions.
Next session
How to use it
- Enter the weight you're using and your target reps per set (for example 3 sets of 8).
- Enter the reps you got on your LAST set in each of your last two sessions with this weight.
- Choose upper or lower body, and whether you're newer or lighter, or stronger and heavier. Pick the smallest jump your equipment allows.
- Read whether to add weight, and the suggested new weight.
How it's calculated
When to add weight: the 2-for-2 rule. From the NSCA’s Essentials of Strength Training and Conditioning: when you can do 2 or more reps over your target on the last set, in two sessions in a row, increase the load next time. The calculator checks your last two sessions:
| Your last set | Result |
|---|---|
| Target + 2 or more, both sessions | Add weight |
| Target + 2 or more, last session only | One more session at this weight, then add |
| Target reached, but not + 2 | Stay and keep adding reps |
| Below target, both sessions | Stay, or go a bit lighter if it keeps happening |
How much to add. The NSCA gives these increases:
| Upper body | Lower body | |
|---|---|---|
| Newer or lighter | 1–2 kg (2.5–5 lb) | 2–4 kg (5–10 lb) |
| Stronger or heavier | 2–4 kg (5–10 lb) | 4–7 kg (10–15 lb) |
The calculator rounds the suggested range to loadable increments and caps it at 10% of the current load, following the upper end of the ACSM guidance. If the suggested jump exceeds that cap, keep your current load or select a smaller increment if your equipment allows it.
Sources
- Haff, G. G., & Triplett, N. T. (Eds.). (2016). Essentials of Strength Training and Conditioning (4th ed.). Champaign, IL: Human Kinetics. The 2-for-2 rule and load increments.
- American College of Sports Medicine (2009). Progression models in resistance training for healthy adults. Medicine & Science in Sports & Exercise, 41(3), 687–708.
Questions
What is the 2-for-2 rule?
If you can do 2 or more reps beyond your target on the last set of an exercise, in two sessions in a row, it's time to add weight. It's a simple rule from the NSCA that makes sure a weight has really gotten easier before you go up.
Why the last set?
The last set is the hardest one, because fatigue builds up over the earlier sets. Beating your target there means you could also handle more weight on the first sets.
How much weight should I add?
The NSCA suggests 1 to 2 kg (2.5 to 5 lb) for upper body lifts and 2 to 4 kg (5 to 10 lb) for lower body lifts if you're newer or lighter, and roughly double for stronger, heavier lifters. The calculator caps suggestions at 10% of the current load.
What if I can't add the suggested amount?
Use the smallest jump you have, even if it's a bit more than suggested, then build the reps back up. Fractional plates or the next dumbbell up both work. Adding reps first is also progressive overload.
Updated November 9, 2026.