1RM Calculator
Estimate your one-rep max from a completed set.
Strength Training Calculators
Estimate max strength, understand training intensity, and turn your numbers into practical workout loads.
Max Strength
Rep Max
Estimate multiple rep-max values from one performance.
Strength-to-Weight
Compare a lift with your bodyweight.
Intensity
RPE
Estimate effort and intensity with rate of perceived exertion.
RIR
Connect reps in reserve with RPE and percentage of max.
Training Max
Set a conservative max for program calculations.
Workout Planning
Training Percentages
Generate rounded working weights across useful percentages.
Warm-Up
Build progressive sets toward your working weight.
Plate Loading
Find the plates needed on each side of the bar.
Analysis
Strength Symmetry
Compare normalized performance across lifts.
Workout Volume
Total sets, reps, and weight volume.
Using these tools
Use max-strength estimates as repeatable training references rather than guaranteed performances. Combine them with RPE or RIR to account for daily readiness, then use training percentages, warm-up sets, and plate loading to put the plan into practice.