What Is a Training Max? How to Calculate and Use It
A training max (TM) is a number set deliberately below your one rep max — usually 90% of it — that a program uses to calculate your working weights. If your 1RM is 300 lb, a 90% training max is 270 lb, and “5 reps at 75%” means 75% of 270 lb, not of 300 lb.
The idea was popularised by Jim Wendler’s 5/3/1 program, and many strength programs now use it. Training from a slightly lower number keeps your sessions achievable on an average day, so you can progress steadily for months instead of grinding through weights that are too heavy.
Training max calculator
No tested max? Estimate your 1RM from a recent heavy set first.
Training max vs. one rep max
| Question | One rep max (1RM) | Training max (TM) |
|---|---|---|
| What it is | The most you can lift once with good form | A planning number, usually 85–90% of your 1RM |
| How you get it | A tested single, or an estimate from a heavy set | Your 1RM × 0.90 (or 0.85) |
| What it’s for | Measuring maximal strength | Calculating the weights you train with |
| Should you lift it? | Only when testing | It is not a max — you are not meant to “hit” it |
How to calculate your training max
- Find your 1RM. Use a recent tested single, or estimate it from a heavy set of 3–6 reps with the one rep max calculator.
- Multiply by 0.90 (or 0.85 for a more conservative start).
- Round down to a weight you can load. Rounding down keeps every session achievable.
- Calculate working weights from the training max, not from your 1RM. The 1RM percentage calculator does this if you enter your training max as the “1RM”.
Worked example
Say your best recent set was 225 lb for 5 reps. The six formulas on 1RMHub estimate your 1RM at about 260.5 lb (range 253.1–267.8 lb).
| Option | Calculation | Training max | Loadable |
|---|---|---|---|
| 90% training max | 260.5 × 0.90 | 234.5 lb | 230 lb |
| 85% training max | 260.5 × 0.85 | 221.4 lb | 220 lb |
A session prescribed as “3 sets of 5 at 75%” would then use 75% of 230 lb, about 172.5 lb — noticeably lighter than 75% of the full estimate.
Why use a training max instead of your 1RM?
- Your strength varies day to day. Sleep, stress and fatigue change what you can lift. A training max leaves a margin, so the planned weights still work on an off day.
- 1RM estimates are not exact. Formulas disagree by several percent even on a good 5-rep set, and a single tested max can be a lucky or unlucky day. Percentage-based training depends on that number being right; a study comparing loading methods notes that an unrepresentative 1RM test leads to training loads that are too heavy or too light (Helms et al., 2018).
- Better technique and fewer failed reps. Lighter-than-maximal working sets let you practise good form and build volume without constantly training at your limit.
- Room to progress. Starting lower means the training max can rise steadily for many cycles before it catches up with your real strength.
Should you use 85% or 90%?
90% is the most common default and suits most lifters with a reliable 1RM.
85% (or lower) is a sensible choice when:
- your 1RM is an estimate from a higher-rep set (8–12 reps), which is less accurate;
- you are returning after a break or an injury;
- the program has a lot of volume or you train many lifts per week;
- your recent sessions have felt like grinders at the prescribed weights.
If in doubt, start lower. Increasing a training max that is too low costs you a few easy weeks; a training max that is too high leads to missed reps and stalled progress.
How to increase your training max
The common convention, used in Wendler’s 5/3/1, is to raise the training max after each training cycle (usually 3–4 weeks):
| Lift type | Increase per cycle |
|---|---|
| Upper body (bench press, overhead press) | +5 lb (+2.5 kg) |
| Lower body (squat, deadlift) | +10 lb (+5 kg) |
When not to increase it: if you miss the prescribed reps, or the last sets turn into grinders, keep the training max the same for another cycle or lower it. A simple reset is to re-estimate your 1RM from a fresh heavy set and take 85–90% again.
Common training max mistakes
- Using your 1RM as your training max. The whole point is the margin; without it, the heaviest sets become max attempts.
- Setting it from an all-time best you hit months ago rather than your current strength.
- Increasing it every cycle no matter what. Progress the number only when the work is going well.
- Rounding up. Always round the training max and working weights down to loadable plates.
- Retesting your true max constantly. Re-estimate from heavy sets instead; see how to test your 1RM safely for when a real test makes sense.
Training max FAQ
Is a training max the same as a 1RM?
No. A 1RM is the most you can lift once. A training max is a lower planning number — usually 90% of your 1RM — that you never actually need to lift.
Can I use an estimated 1RM to set my training max?
Yes, and most lifters do. Estimate from a heavy set of 3–6 reps for the best accuracy, and consider 85% instead of 90% if your estimate came from a higher-rep set.
Should beginners use a training max?
It can help, because it keeps sessions achievable while technique is still developing. Beginners’ strength changes quickly, though, so re-estimate your 1RM every few weeks.
How often should I update my training max?
Usually after every training cycle of 3–4 weeks, by the small increments above — but only if the cycle went well. Re-estimate your 1RM every few months to check the training max still makes sense.
Can I use a training max with RPE training?
They are different ways of choosing load. A training max fixes weights in advance from percentages; RPE adjusts weights to how hard a set feels on the day. Some lifters combine them — see the RPE calculator for estimating weights by reps in reserve.