Free TDEE, running pace & fitness calculators.
Strength
Calculate your 1 rep max, training load percentages, RPE-based working weights, weekly volume targets, and powerlifting totals. Every tool uses peer-reviewed formulas — Epley, Brzycki, Wilks, DOTS — so your numbers are accurate and programmable.
Use our free barbell calculator to find the exact weight plates needed on each side of the bar for any target load.
Find the exact plate combination to load your barbell with our free plate weight calculator — supports all standard plate sizes.
Use our free powerlifting calculator to calculate your Wilks, DOTS, and IPF GL scores to compare strength across weight classes.
Use our free 1 rep max calculator to estimate your one-rep max using Epley, Brzycki, Lombardi, O'Conner, and Lander formulas.
Use our free training volume calculator to measure total sets, reps, and tonnage for any strength workout or training block.
Use our free strength ratio calculator to assess your push, pull, and leg strength ratios relative to your bodyweight.
Use our free RPE calculator to predict your working weight or rep count at any RPE value based on your training max.
Who these tools are for: intermediate lifters (1+ year of consistent training) who programme with percentage-based loading, RPE, or both. If you are setting up a new training block, start with the 1 Rep Max Calculator, then use the Training Volume Calculator to set weekly set targets per muscle group.