RPE Reps In Reserve
Convert a strength-set RPE rating to estimated reps in reserve on a chosen scale.
Description
An RPE-to-reps-in-reserve estimate subtracts exertion from the chosen scale maximum.
An RPE-to-reps-in-reserve estimate subtracts exertion from the chosen scale maximum. It assumes a one-unit rating difference represents one reserved repetition.1
Convert a strength-set RPE rating to estimated reps in reserve on a chosen scale.
When to use RPE Reps In Reserve
Use this tool to convert a strength-set RPE rating to estimated reps in reserve on a chosen scale.
Prepare the measured movement, timing, load or preassigned score requested. Keep protocols, units, paired measurements and caller-selected thresholds consistent.
How to use RPE Reps In Reserve and understand its results
- Prepare the measured movement, timing, load or preassigned score requested. Keep protocols, units, paired measurements and caller-selected thresholds consistent.
- Enter exertionRating, scaleMaximum using the field table and calculation rules, then run the tool.
- Read repsInReserveEstimate. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| exertionRating | Exertion rating | number | Required |
| scaleMaximum | Scale maximum | number | Required |
Enter positive maximum and rating from zero through maximum. Fractional ratings return fractional estimates.
estimatedRIR=scaleMaximum−rating Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| repsInReserveEstimate | Reps in reserve estimate | number |
{
"input": {
"exertionRating": 8,
"scaleMaximum": 10
},
"output": {
"repsInReserveEstimate": 2
}
}Limitations and assumptions
No individual calibration, fatigue model or actual repetition capacity is measured.
Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use One Rep Max Training Loads: Generate lift training loads from a measured one-rep max and chosen fractions. For a complementary task, use Epley Brzycki Comparison: Compare Epley and Brzycki one-rep-max estimates from load and repetitions.
References
-
RPE Reps In Reserve — tool.io
Similar or alternative tools
- One Rep Max Training Loads
Generate lift training loads from a measured one-rep max and chosen fractions.
- Epley Brzycki Comparison
Compare Epley and Brzycki one-rep-max estimates from load and repetitions.