Guide
How to test your 1RM safely
A true max is a skill, not just a heavy lift. This protocol gets you to a real number with the least risk and the least wasted energy.
Do you need to test at all?
For most training purposes, an estimated 1RM from a hard set of 3–5 reps is accurate enough — and it costs you a normal workout instead of a draining max-out day. Test a true single when you're preparing for a competition, finishing a training block, or simply want to know.
Before you start
- Be fresh. Test after a lighter week, not at the end of a hard one.
- Set up safety first. Squat and bench inside a rack with the safety arms set just below your lowest position, or with competent spotters. Deadlifts need no spotter — just a clear area.
- Know your target. Use the calculator to estimate your max and plan attempts around it.
The warm-up ladder
Percentages are of your estimated 1RM. Keep warm-up reps crisp — they're practice, not work.
| Load | Reps | Rest after |
|---|---|---|
| Empty bar | 10 | — |
| 40–50% | 5 | 1 min |
| 60% | 3 | 2 min |
| 70% | 2 | 2 min |
| 80% | 1 | 3 min |
| 90% | 1 | 3–5 min |
| Attempt 1 · ~95% | 1 | 3–5 min |
| Attempt 2 · ~100% | 1 | 3–5 min |
| Attempt 3 · 100–103% | 1 | — |
Choosing attempts
Plan three attempts. The first should be a weight you're confident you can lift on a bad day — around 95% of your estimate. The second is your estimated max. The third is a small jump only if the second moved well: 2.5–5 kg (5–10 lb) for squat and deadlift, 1–2.5 kg (2.5–5 lb) for bench.
Stop when bar speed drops sharply or your technique changes. A max with broken form isn't a number you can train from.
After the test
Write down the result and how it felt. Use it with the percentage chart to set your next block — many coaches base training on 90% of a tested max, a "training max", so the first weeks start comfortably.
Questions lifters ask
How long should I rest between 1RM attempts?
Three to five minutes between heavy singles. Rushing attempts costs more weight than it saves time.
How often should I test my one rep max?
Most lifters test no more than every 8–12 weeks, usually at the end of a training block. In between, an estimate from a hard set is enough to set training loads.
Should beginners test a 1RM?
Usually not. In the first months of training your technique is still changing and your strength rises quickly. Estimate your max from sets of 3–5 instead.