Warm-up sets calculator
Enter your working weight and get a ready warm-up ramp: roughly 50%, 70% and 85% with sensible reps. It is not barbell-only: pick dumbbells or a machine and every step rounds to what your equipment can actually load.
| Set | Weight | Reps | Purpose |
|---|---|---|---|
| 1 | — | 10 | Groove the movement |
| 2 | — | 5 | ~50%, add speed |
| 3 | — | 3 | ~70%, full focus |
| 4 | — | 1–2 | ~85%, primer |
| Work | — | plan | Working sets |
Why ramped warm-up sets matter
A ramped warm-up prepares the exact movement you are about to load: it raises tissue temperature, rehearses positions and primes the nervous system for heavy weight, without creating fatigue that would cost reps in the working sets. Skipping the ramp makes the first working set feel heavier than it should; overdoing it steals volume from the sets that actually count.
The 50-70-85 structure, and why rounding differs
Percentages are taken from the working weight, not your one rep max, so the ramp scales automatically whether today is light or heavy. Turning those percentages into a real weight depends on what is in your hands, and this is where equipment differs:
- Barbell: the first step is the empty bar, and steps round to 2.5 kg because the smallest usable pair of plates is 1.25 kg per side.
- Dumbbells: no bar, and racks step by about 2 kg, so steps round to 2 kg and never go below the lightest dumbbell.
- Machine: the load comes in stack plates, usually 5 kg, so steps round to 5 kg.
When the working weight is close to the starting step, extra steps are skipped: ramping to 20 kg before working sets at 25 kg is pointless. If you want to know your actual max, that is the 1RM calculator, and the plate calculator covers which plates to load.
Method and sources
Research supports warming up before hard sets and warns against turning it into fatigue. The specific ladder below is a coaching convention, so it is worth being explicit about which part rests on evidence and which on practice.
The 50-70-85% scheme is a widely used coaching standard, not a number derived from a study: no research prescribes exact warm-up percentages. Treat it as a sensible default and adjust to the lift, the day and how the weight feels.
- Fradkin AJ, Zazryn TR, Smoliga JM (2010). Effects of warming-up on physical performance: a systematic review with meta-analysis. Journal of Strength and Conditioning Research, 24(1), 140–148 Used for: the case for warming up at all: performance improved in most studies reviewed, provided the warm-up did not cause fatigue
- Schoenfeld BJ, Grgic J, Ogborn D, Krieger JW (2017). Strength and Hypertrophy Adaptations Between Low- vs. High-Load Resistance Training: A Systematic Review and Meta-analysis. Journal of Strength and Conditioning Research Used for: why warm-up sets stay light and short: the training effect comes from the working sets, so the ramp must not spend them
Frequently asked questions
Three to four ramped sets work for most weights: a light set for ten easy reps, then roughly 50% for five, 70% for three and 85% for one or two. Light working weights need fewer steps, near-max attempts benefit from an extra single around 90 to 95%. The goal is readiness without fatigue.
The percentages are the same, the rounding and the first step differ. A barbell ramp starts with the empty bar; dumbbells and machines have no bar, so the ladder starts at the lightest step available: dumbbells round to 2 kg (a typical rack increment) and machines to 5 kg (a typical stack plate). Pick your equipment and the rounding adjusts.
Never. Warm-up sets rehearse the movement and prepare tissues for load, they are not training volume. Every warm-up rep should feel crisp and fast. If a 70% triple feels like work, either the working weight is set too high today or you need more general warm-up first.
Five minutes of easy cardio raises body temperature and makes the first sets feel better, especially in a cold gym or early morning. It is a supplement, not a replacement: the specific ramp with your actual equipment is what prepares the movement pattern you are about to load.
Short: 30 to 60 seconds between light sets, up to 2 minutes after the heaviest warm-up single. You are not recovering from fatigue, just changing the weight. Take your normal full rest before the first working set.
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