1. What is RPE?

RPE (Rate of Perceived Exertion) is a subjective measure of exercise intensity. In weight training, it typically ranges from 1-10, with 10 being maximal effort.

2. How Does the Calculator Work?

The calculator uses the RPE percentage formula:

Where:

• \( RPE \) — Rate of Perceived Exertion (7-10 scale)
• \( 2.5 \) — Percentage decrement per RPE point

Explanation: The equation estimates the percentage of your 1RM based on your 10RM weight and target RPE.

3. Importance of RPE Training

Details: RPE-based training allows for auto-regulation, accounting for daily fluctuations in performance capacity and reducing injury risk.

4. Using the Calculator

Tips: Enter your 10RM weight (the maximum you can lift for 10 reps at RPE 10) and select your target RPE for the workout.

5. Frequently Asked Questions (FAQ)

Q1: Why use RPE instead of percentages?
A: RPE accounts for daily variations in performance, fatigue, and other factors that fixed percentages don't consider.

Q2: What's the relationship between RPE and reps?
A: Lower RPE values allow more reps at a given percentage. RPE 10 is maximal effort for the target reps.

Q3: How accurate is RPE-based training?
A: With practice, experienced lifters can estimate RPE within about ±5% of actual capacity.

Q4: Should beginners use RPE?
A: Beginners should first develop consistent technique before incorporating RPE-based training.

Q5: How does RPE relate to 1RM percentages?
A: RPE 10 at 1 rep = 100%, RPE 10 at 10 reps ≈75%, with other RPE values scaling accordingly.