RPE Chart for Powerlifting
Rate of Perceived Exertion (RPE) is the autoregulation system that replaced fixed percentages as the default dosing tool in modern raw powerlifting. The 6–10 reps-in-reserve scale, popularised by Mike Tuchscherer and Reactive Training Systems in the late 2000s, lets a lifter prescribe effort instead of weight, so a bad-readiness day automatically lifts less. Validity: across 18 studies, RPE correlates inversely with bar velocity at r = −0.76 (Petro et al. 2024, PMID 38910451) — placing RPE as a valid proxy for velocity-based load monitoring. Accuracy is proximity-dependent: at RPE 9 (1 RIR) intraset error is ≤ 1 rep, but rises to ± 2.4 reps at RPE 5 regardless of training age (Zourdos et al. 2019, PMID 30747900); precision then improves measurably over 6 weeks of consistent training (Remmert, Zourdos et al. 2023, PMID 37436724). This page hosts the full RPE-to-%1RM chart by rep count, the origin of the scale, and how to use it without the common mistakes.
the RPE chart (RPE × reps → %1RM)
| RPE | 1 rep | 2 reps | 3 reps | 4 reps | 5 reps | 6 reps | 8 reps | 10 reps |
|---|---|---|---|---|---|---|---|---|
| 10 | 100.0 % | 95.5 % | 92.2 % | 89.2 % | 86.3 % | 83.7 % | 79.2 % | 75.5 % |
| 9.5 | 97.8 % | 93.9 % | 90.7 % | 87.8 % | 85.0 % | 82.4 % | 78.0 % | 74.3 % |
| 9 | 95.5 % | 92.2 % | 89.2 % | 86.3 % | 83.7 % | 81.1 % | 76.8 % | 73.0 % |
| 8.5 | 93.9 % | 90.7 % | 87.8 % | 85.0 % | 82.4 % | 79.9 % | 75.5 % | 71.8 % |
| 8 | 92.2 % | 89.2 % | 86.3 % | 83.7 % | 81.1 % | 78.6 % | 74.3 % | 70.6 % |
| 7.5 | 90.7 % | 87.8 % | 85.0 % | 82.4 % | 79.9 % | 77.4 % | 73.0 % | 69.4 % |
| 7 | 89.2 % | 86.3 % | 83.7 % | 81.1 % | 78.6 % | 76.2 % | 71.8 % | 68.2 % |
| 6.5 | 87.8 % | 85.0 % | 82.4 % | 79.9 % | 77.4 % | 75.0 % | 70.6 % | 67.0 % |
Read the chart this way: a set of 5 reps left at RPE 8 represents 81.1 % of your true one-rep max. A single at RPE 9 is 95.5 %. The chart is reversible — if you hit 5 reps at 81 %, your training-day 1RM-equivalent is the number that 81.1 % / row-5-RPE-8 implies, and most lifters use this reverse-lookup to back-calculate an e1RM (estimated 1RM) at the end of every session.
what RPE actually means
RPE on the modern strength scale is not the 6–20 Borg cardiovascular scale. It is a 6–10 reps-in-reserve (RIR) scale:
- RPE 10: maximum, no rep left in reserve. A grinder.
- RPE 9.5: maybe one more rep was technically possible.
- RPE 9: 1 rep left in the tank.
- RPE 8.5: 1–2 reps left.
- RPE 8: 2 reps left.
- RPE 7.5: 2–3 reps left.
- RPE 7: 3 reps left.
- RPE 6.5: 3–4 reps left.
Below RPE 6.5 the scale loses resolution — lifters cannot reliably distinguish "5 in reserve" from "6 in reserve" on a heavy compound. Modern coaches simply call anything below 6.5 a warm-up or recovery set and dose it by feel.
origin — Tuchscherer and Reactive Training Systems
Mike Tuchscherer adapted the RPE-as-RIR scale for resistance training in The Reactive Training Manual (Reactive Training Systems, 2008). The earlier Borg 6–20 scale (Gunnar Borg, 1962) measured cardiovascular exertion and did not map cleanly to strength training, where local muscular failure — not cardiovascular load — is the rate-limiting factor.
Tuchscherer's contribution was making the scale rep-anchored: every half-point on the 6–10 scale corresponds to a specific count of reps left in reserve, which is a question lifters can answer with reasonable accuracy after a few weeks of practice. The validity of that self-rating has since been studied: Zourdos et al. (J Strength Cond Res 2016, PMID 26049792) found that experienced trained lifters estimate RIR within ±1 rep on heavy compounds — accurate enough for the chart's intensity prescriptions to be useful.
how to autoregulate with the chart
The strongest use of RPE is the "top-set then back-off" pattern:
- Top single or top-set at a prescribed RPE (e.g., "work up to a single at RPE 8"). The weight that lands you at the target RPE becomes your training-day 1RM-equivalent via the chart's reverse lookup.
- Back-off sets at a prescribed drop (e.g., "3 sets of 5 at 10 % below the top single"). The back-off weight self-adjusts to whatever your readiness allowed that day.
This pattern is the core of Reactive Training Systems, The Bridge (Barbell Medicine), and most of the post-5/3/1 raw powerlifting programs from 2015 onward. The fixed-percentage alternative — "5 × 5 @ 80 % of last-tested 1RM" — fails on bad days (you grind out reps you should not have done) and underdelivers on good days (you leave easy weight on the bar).
common mistakes
Anchoring RPE to weight, not feel. The chart converts between RPE and %1RM, but the read-out direction is always "what RPE did this set feel like?" → "what %1RM does that imply?". Lifters who read the chart as "I should hit X kg today because that's 81 %" defeat the autoregulation premise.
Calling every hard set RPE 10. Tuchscherer's data showed that novice lifters systematically over-rate effort by 1–1.5 RPE points in the first 6–12 weeks of using the scale. If every set is RPE 9–10, the program will under-load and stop progressing within a month. The fix is video review: film top sets, count actual reps you could have done after the set, calibrate.
Treating RPE as exact. It is not. ±0.5 RPE is the realistic resolution; ±1.0 is the realistic resolution on a peaking-meet attempt where adrenaline noise is high.
RPE vs Prilepin's table
RPE prescribes by autoregulated effort; Prilepin's table prescribes by fixed percentage. Use Prilepin when your 1RM is recent and reliable and you want a written plan; use RPE when readiness varies or when no recent 1RM exists. Most modern programs combine them: Prilepin's set-rep grid plus an RPE cap per set, so the prescription self-adjusts when you have a bad day (Helms et al. 2018, PMID 29786623).
frequently asked questions
- What is RPE in powerlifting?
- Rate of Perceived Exertion on the 6–10 reps-in-reserve scale: RPE 10 is a max, RPE 9 leaves 1 rep, RPE 8 leaves 2, and so on down to 6.5. Popularised by Mike Tuchscherer in 2008.
- Is the RPE chart accurate?
- For experienced lifters, yes — within ±1 rep of true RIR (Zourdos et al. 2016, PMID 26049792). For first-time users, expect 1–1.5 RPE points of over-rating until the scale is calibrated via video review.
- How does RPE convert to %1RM?
- Cross-reference your RPE with the rep count of the set. Example: 5 reps at RPE 8 = 81.1 % of 1RM. The full chart above is the canonical lookup.
- Can I use RPE without knowing my 1RM?
- Yes — this is the strongest use case. Top-set at a prescribed RPE, then back-off at a fixed percentage drop. The chart back-calculates an estimated 1RM for that day's session.
- What is RIR vs RPE?
- RIR (reps in reserve) is the underlying count; RPE is the scale value. RIR 2 = RPE 8, RIR 1 = RPE 9, RIR 0 = RPE 10. Newer literature increasingly uses RIR directly instead of the RPE wrapper.
- Should beginners use RPE?
- Cautiously. The auto-regulation premise breaks down when self-rating accuracy is poor. Most coaches recommend 8–12 weeks of fixed-percentage programming first, then introduce RPE on top sets only, before going fully RPE-based.
sources
- Tuchscherer, M. (2008). The Reactive Training Manual. Reactive Training Systems Press.
- Helms, E. R., Cronin, J., Storey, A. & Zourdos, M. C. (2016). Application of the Repetitions in Reserve-Based Rating of Perceived Exertion Scale for Resistance Training. Strength and Conditioning Journal 38(4):42–49. DOI: 10.1519/SSC.0000000000000218.
- Helms, E. R., Cross, M. R., Brown, S. R., Storey, A., Cronin, J., Zourdos, M. C. (2018). Rating of Perceived Exertion as a Method of Volume Autoregulation Within a Periodized Program. J Strength Cond Res 32(6):1627–1636. PMID 29786623.
- Borg, G. (1962). Physical Performance and Perceived Exertion. Lund University, Gleerup.
- Zourdos, M. C., Klemp, A., Dolan, C., Quiles, J. M., Schau, K. A., Jo, E., Helms, E., Esgro, B., Duncan, S., Garcia Merino, S. & Blanco, R. (2016). Novel Resistance Training-Specific Rating of Perceived Exertion Scale Measuring Repetitions in Reserve. J Strength Cond Res 30(1):267–275. PMID 26049792.