Strength, Power & 1RM
One Rep Max estimations (Epley, Brzycki, Lombardi, Mayhew, Lander), training maxes, barbell plate loading, and powerlifting coefficients (Wilks, DOTS, IPF GL).
One Rep Max Calculator
Calculate maximum single-repetition lift capacity across Epley, Brzycki, and Lander formulas
1RM Calculator
Fast 1RM calculation for weightlifting and powerlifting programming
Epley 1RM Calculator
Dedicated implementation of Boyd Epley's 1985 linear strength formula
Brzycki 1RM Calculator
Dedicated implementation of Matt Brzycki's 1993 strength equation
Lander 1RM Calculator
Calculate 1RM using J. Lander's 1985 NSCA formula
Lombardi 1RM Calculator
Calculate 1RM using V.P. Lombardi's 1989 non-linear power formula
Mayhew 1RM Calculator
Calculate 1RM using Mayhew et al.'s 1992 exponential bench press model
Strength Percentage Calculator
Calculate training weights across 100%, 90%, 85%, 80%, 75%, and 70% of 1RM
Weightlifting Plate Calculator
Calculate exact barbell plate loading configuration per side
Training Max Calculator
Calculate 90% or 85% Training Max (TM) for Wendler 5/3/1 and submaximal programs
Wilks Score Calculator
Calculate classic powerlifting strength coefficient normalized for body weight
DOTS Score Calculator
Calculate modern Dynamic Objective Team Scoring (DOTS) points
IPF GL Points Calculator
Calculate official International Powerlifting Federation GoodLift points
Bench Press Calculator
Calculate bench press 1RM, working percentages, and strength standards
Squat Calculator
Calculate back squat 1RM, working percentages, and strength tiers
Deadlift Calculator
Calculate deadlift 1RM, working percentages, and strength tiers
1RM Percentage Calculator
Calculate complete 50% to 100% training loads and rep targets from 1RM
Estimated 1RM Comparison Calculator
Compare all 5 major 1RM formulas (Epley, Brzycki, Lander, Lombardi, Mayhew) side-by-side
Training Load Calculator
Calculate total volume load (tonnage) and workout intensity coefficient
Strength Ratio Calculator
Calculate strength-to-weight ratio (multiple of bodyweight lifted)
Plates per Side Calculator
Calculate exact Olympic plate combination per sleeve for barbell training