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Free RPE Calculators for Smarter Strength Training

34 Science-Backed Tools

Calculate your E1RM, plan meet attempts, analyze training drift, and track progress - all calibrated to your personal RPE scale. Built for powerlifters and strength athletes who train with RPE.

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34 Free Tools
2.5M+ Competition Records
100% Evidence-Based

Calculate

Core calculators for RPE-based training
Calculate
E1RM Calculator Know your true one-rep max. Enter your set and get an instant estimate based on the Tuchscherer RPE chart.
Calculate
RPE Chart The complete RPE-to-percentage reference. Find the exact load for any rep and RPE combination.
Calculate
Plate Calculator See exactly which plates to load. Visual barbell diagram shows your setup at a glance.
Calculate
RIR Converter Instantly convert RPE to Reps In Reserve and back. Perfect for following any program.
Calculate
Backoff Sets Auto-calculate your backoff sets. Choose percentage drop or RPE drop method.
New Calculate
Warm-Up Calculator Progressive warm-up sets with plate loading for each set. Training and competition modes.
Calculate
Cardio RPE Calculator Convert between Borg 6-20, Tuchscherer RPE, and heart rate training zones for running, cycling, rowing, and swimming.

Compete

Meet preparation and competition tools
Compete
Meet Day Calculator Plan all three attempts with success probability. Includes plate loading for each lift.
New Compete
Meet Day Command Center All 9 attempts + timed warm-ups + plate loading in one printable sheet. Give it to your handler.
Compete
Strength Benchmarks Compare your lifts against 2.5M+ competition results. See where you rank by weight class.
New Compete
Scoring Calculator Compare your total across Wilks-2, DOTS, and IPF GL scoring systems side by side.
New Compete
Competition Readiness Are you ready for a meet? See how your total compares to local, state, and national levels.
New Compete
Weight Class Optimizer Should you move up or down? Compare your ranking and DOTS score across adjacent classes.
New Compete
Meet Results Analyzer Compare actual meet results to planned attempts. What-if scenarios and scoring recalculations.

Analyze

Deep analysis and insights tools
Unique Analyze
RPE Standards Get your RPE accuracy grade (A-F) with a personal deviation heatmap. Nobody else offers this.
Unique Analyze
RPE Drift Tracker Chart E1RM decline across sets to find your optimal set count and fatigue signature.
New Analyze
Strength Symmetry Analyze your lift ratios with a radar chart. Find weak points compared to competition averages.
New Analyze
Age Progression Where you stand on the age-adjusted strength curve. See your projected trajectory.
New Analyze
Lift Ratio Analyzer See your S/B/D split vs your weight class cohort. Know if your squat, bench, or deadlift is holding back your total.
New Analyze
Allometric Scaling See how your lifts scale with bodyweight using power-law analysis. Find your optimal weight class with data.
New Analyze
Equipment vs Raw Enter your raw lifts and see estimated single-ply and multi-ply equivalents. Understand equipment carry-over.

Train

Training programming and tracking
New Train
Gym Mode What weight should I use today? One screen, instant answer, plate loading, rest timer.
New Train
Program Translator Convert any percentage-based program to RPE-adjusted weights. Supports 5/3/1, Texas Method, Sheiko.
New Train
Deload Calculator Detect accumulated fatigue from E1RM trends and get a science-based deload week prescription.
Train
RPE Trainer Train your RPE accuracy with video-based scenarios and instant feedback.
Train
Workout Logger Log sets with RPE tracking, rest timer, and exercise search. Login to save permanently.
Train
Progress Dashboard Track E1RM trends, volume analysis, and training achievements over time.
New Train
Peaking Calculator Science-based meet peaking protocol. Week-by-week volume taper and intensity targets.
New Train
Volume Tracker Track weekly sets per muscle group. Estimate your MEV, MAV, and MRV zones.
New Train
Block Planner Periodized 8-16 week training blocks for strength, hypertrophy, or meet prep. Week-by-week RPE targets and actual weights.
New Train
Daily Readiness Rate sleep, stress, motivation, and soreness in 30 seconds. Get a readiness score and weight adjustment for today.
New Train
Session Planner Build complete training sessions with auto-calculated weights from your E1RM. Warm-up, working, and backoff sets in one click.
New Train
Fatigue Dashboard Composite fatigue index with traffic-light recommendations. Aggregates readiness, drift, and volume data.
New Train
PR Board All-time personal records, PR timeline, estimated vs actual, and strength velocity trends.

What Is the RPE to Percentage Chart?

Percentage of 1RM for each RPE and rep combination. Based on Mike Tuchscherer's Reactive Training Systems chart.

100 RIR
9.50-1
91 RIR
8.51-2
82 RIR
7.52-3
73 RIR
6.53-4
64+
Max effort Working sets Light effort
RPE Chart: % of 1RM by Reps and RPE
RPE 1 2 3 4 5 6 7 8 9 10 11 12
RPE 10 100% 95.5% 92.2% 89.2% 86.3% 83.7% 81.1% 78.6% 76.2% 73.9% 70.7% 68.0%
RPE 9.5 97.8% 93.9% 90.7% 87.8% 85.0% 82.4% 79.9% 77.4% 75.1% 72.3% 69.4% 66.7%
RPE 9 95.5% 92.2% 89.2% 86.3% 83.7% 81.1% 78.6% 76.2% 73.9% 70.7% 68.0% 65.3%
RPE 8.5 93.9% 90.7% 87.8% 85.0% 82.4% 79.9% 77.4% 75.1% 72.3% 69.4% 66.7% 64.0%
RPE 8 92.2% 89.2% 86.3% 83.7% 81.1% 78.6% 76.2% 73.9% 70.7% 68.0% 65.3% 62.6%
RPE 7.5 90.7% 87.8% 85.0% 82.4% 79.9% 77.4% 75.1% 72.3% 69.4% 66.7% 64.0% 61.3%
RPE 7 89.2% 86.3% 83.7% 81.1% 78.6% 76.2% 73.9% 70.7% 68.0% 65.3% 62.6% 59.9%
RPE 6.5 87.8% 85.0% 82.4% 79.9% 77.4% 75.1% 72.3% 69.4% 66.7% 64.0% 61.3% 58.6%
RPE 6 86.3% 83.7% 81.1% 78.6% 76.2% 73.9% 70.7% 68.0% 65.3% 62.6% 59.9% 57.4%

Columns = reps performed. Find your RPE row, then the column for your rep count to get the percentage of your 1RM. Use the interactive RPE chart to look up any combination instantly.

How Does RPE-Based Training Work?

RPE (Rate of Perceived Exertion) is an autoregulation system that adjusts training intensity based on how you feel each day. Instead of using fixed percentages, you rate each set on a 6-10 scale to account for daily fluctuations in strength and fatigue.

Why Use RPE?

  • Autoregulation: Adjusts intensity to match your daily readiness and recovery
  • Injury Prevention: Prevents overreaching on bad days while still pushing on good days
  • Precise Tracking: E1RM calculations from submaximal sets without risky max attempts
  • Program Flexibility: Works with any programming style (linear, undulating, block)
  • Long-term Progress: Sustainable training that drives consistent strength gains

The RPE Scale

  • RPE 10: Maximal effort, no reps left in the tank
  • RPE 9: Could do 1 more rep
  • RPE 8: Could do 2 more reps (most common training RPE)
  • RPE 7: Could do 3 more reps (warm-up territory)
  • RPE 6: Could do 4+ more reps (speed/technique work)

Frequently Asked Questions

RPE stands for Rate of Perceived Exertion. In weightlifting, it is a 6-to-10 scale that measures how hard a set felt relative to your maximum effort. An RPE of 10 means the set was a true max and you could not have completed another rep. An RPE of 8 means you had roughly 2 reps left in reserve. Powerlifters and strength coaches use RPE to autoregulate training intensity: on days you feel strong, the weights naturally go up, and on days you feel fatigued, you train at weights that still drive adaptation without risking injury or excessive fatigue.
To calculate your estimated one-rep max (E1RM) from RPE, you need three pieces of information: the weight you lifted, the number of reps you completed, and the RPE you rated the set. Using the Tuchscherer RPE chart, you look up the percentage of 1RM that corresponds to your rep count and RPE, then divide the weight lifted by that percentage. For example, if you squatted 300 lbs for 3 reps at RPE 8, the chart shows that is approximately 87.5% of your 1RM. So your E1RM would be 300 / 0.875 = 343 lbs. Our E1RM Calculator does this math instantly for you.
RPE (Rate of Perceived Exertion) and RIR (Reps In Reserve) are two sides of the same coin. RIR directly counts how many more reps you could have done: RIR 2 means you had 2 reps left. RPE inverts this on a 10-point scale: RPE 8 also means 2 reps left (10 minus 8 = 2). The main difference is convention. RPE is more common in powerlifting programs influenced by Mike Tuchscherer's Reactive Training Systems (RTS), while RIR is popular in hypertrophy and bodybuilding research. Our RIR Converter lets you translate between the two instantly.
The accuracy of RPE-based calculators depends primarily on how well you rate your own exertion. Research shows that experienced lifters can typically rate within 0.5 RPE of their true effort level, which translates to E1RM estimates within 2-5% of an actual max attempt. Beginners may be off by 1-2 RPE points initially, but accuracy improves significantly with 4-8 weeks of consistent practice. For the most reliable results, use sets of 1-5 reps at RPE 7-9. Our RPE Calibration Trainer helps you develop this skill faster.
No. All calculators work instantly without an account, email, or signup. Some features like the Workout Logger and Progress Dashboard offer optional login for permanent data storage. Without login, your calculator inputs are saved locally in your browser and persist between visits.

These tools provide estimates based on established RPE formulas and competition data. Individual results vary. Always use proper form, a spotter, and safety equipment when lifting heavy weights. Consult a qualified coach or healthcare provider before starting a new training program.