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Calculate the training weight based on your one-rep max (1RM), desired percentage, rep target adjustment, and available equipment increment.

Calculate strength-to-weight ratio by dividing the weight lifted by body weight, with optional unit conversion for body weight and lifted weight.

Calculate a stock’s relative strength versus a benchmark by comparing percentage price performance over a selected period. A value above 100 indicates outperformance, while a value below 100 indicates underperformance.

Estimate overall strength level based on body weight, one-rep max performance, training experience, and sex. The calculator produces a composite strength score that can be used to compare relative lifting level.

Calculate what percentage of your one-rep max a lifted weight represents based on the weight used and your estimated or known 1RM.

Estimate how many repetitions you can perform at a given weight based on your one-rep max, exercise type, and training experience.

Estimate your one-rep max and equivalent target weight from the weight you lifted, the number of reps completed, the target reps, and the prediction formula selected.

Calculate the target weight to use for a lift based on your training max and chosen percentage, with optional rounding to the nearest practical plate increment.

Estimate your training max based on the weight lifted, reps completed, exercise type, and desired training max percentage. This calculator uses a common one-rep max estimation approach and then applies a percentage to set a practical training max for programming.

Calculate the estimated training weight based on your one rep max, target percentage, available plate increment, and unit system. Useful for strength programming, percentage-based lifting, and rounding working sets to the nearest loadable weight.

Estimate your one-repetition maximum (1RM) strength based on the weight lifted, repetitions completed, body weight, lift type, and training experience.

Estimate an overall strength score using one-rep max, body weight, training experience, and lift quality factors.

Estimate your one-rep max (1RM) for a weightlifting exercise based on the weight lifted, repetitions completed, exercise type, and training experience.

Estimate the maximum number of repetitions you can perform at a given weight based on your one-rep max, bodyweight assistance or loading, and exercise difficulty.

Estimate your one-repetition maximum (1RM) based on the weight lifted, number of reps completed, exercise type, and training experience using a weighted version of common rep max formulas.

Estimate your one-repetition maximum (1RM) from the weight lifted, repetitions completed, exercise type, and training experience using a practical strength formula with small adjustments for exercise complexity and lifter experience.

Estimate your one-repetition maximum based on the weight lifted, repetitions completed, exercise type, and training experience.

Estimate your one-repetition maximum (1RM) using the Epley formula based on the weight lifted and the number of repetitions completed.

Calculate the percentage increase in strength between a starting lift and a current lift, with an optional bodyweight normalization factor to compare relative strength progress.

Estimate VO2 max using a 1.5 mile run test with age and sex adjustment factors. Enter your age, sex, body weight, run time, and average heart rate during the test to estimate aerobic fitness in mL/kg/min.

Estimate an appropriate deload working weight based on your normal training weight, target deload intensity, planned volume reduction, and training experience.

Estimate your maximum heart rate using age and a selected calculation method. You can also apply a fitness adjustment and choose an activity intensity to see a practical training-oriented estimate.

Convert kilograms to pounds for weightlifting plates, barbells, and total lifted weight. Includes optional collar weight and a load type multiplier for common gym setups.

Estimate your target heart rate training zone range using age, resting heart rate, and exercise intensity with either the Karvonen method or maximum heart rate percentage method.

Estimate calories burned during a weightlifting session using body weight, workout duration, training intensity, and lifting style. This calculator applies standard MET-based exercise energy formulas to provide a realistic estimate for resistance training.

Estimate calories burned during a weightlifting session using body weight, workout duration, lifting intensity, and rest style. This calculator uses MET-based logic to provide a practical estimate for resistance training workouts.

Calculate workout density as total work performed per minute using sets, reps, weight, and total workout time. This helps compare how much training work is completed relative to session duration.

Estimate recommended weekly training sessions based on your goal, experience level, available training time, and recovery quality.

Estimate total workout duration based on exercise count, sets, average set time, rest time, and warm-up/cool-down intensity.

Estimate recommended rest time between workout sets based on training goal, exercise type, set intensity, and reps performed.