Strength Training Tools

Free strength training calculators. Estimate your 1RM, find the weight for a percentage or an RPE, and see which plates to put on your bar.

1. 1RM Calculator

   Calculate your one-rep max from a set of 2 to 10 reps. Rep max chart, weights by % of 1RM, seven formulas compared, weighted pull-ups and dips. Free.

2. RPE Calculator and RIR Chart for Lifting

   Calculate the weight to use for your reps and your target RPE. RPE and RIR chart, reps in reserve at each RPE, % of 1RM by reps. Free.

3. Barbell Weight and Plate Calculator

   An Olympic bar weighs 20 kg (44.1 lb), the women’s bar 15 kg (33.1 lb), an EZ bar 13.2 to 30 lb. Smith machine bar weights by model, plus a plate calculator.