Editor In Chief

Estimate one-rep max using RPE, weight lifted, reps performed, exercise type, and training experience. This calculator uses an RPE-adjusted percentage model to convert a submaximal set into an estimated 1RM.

Estimate a moderate caffeine dose based on body weight, desired intensity, caffeine sensitivity, and time available for effects. This calculator provides a suggested single-dose amount in milligrams for healthy adults.

Estimate a caffeine dose in milligrams based on body weight, unit system, intended use, and personal tolerance. This calculator helps provide a practical caffeine amount using common evidence-based mg per kg ranges.

Estimate a pre-workout caffeine dose in milligrams based on body weight, training intensity, caffeine sensitivity, and whether you recently consumed caffeine. This calculator uses a common performance-oriented approach starting from body-weight-based dosing and adjusts the recommendation for individual tolerance and workout demands.

Estimate total training volume for a workout based on sets, reps, load, exercise count, and intensity. This calculator helps quantify the total amount of work performed in a session.

Calculate total workout training volume based on exercises, sets, reps, and average weight lifted, with an intensity adjustment for bodyweight, light, moderate, or heavy loading.

Estimate the volume of a rectangular set or stage area in cubic feet using length, width, and height, with adjustments for set complexity and material density.

Estimate total volume load based on item dimensions, quantity, packing efficiency, and load type. Useful for moving, shipping, storage, and freight planning.

Estimate total weekly training volume based on exercises performed, sets per exercise, reps per set, average load, and training frequency. This is useful for tracking resistance training workload across a week.

Estimate recommended weekly training sets for a muscle group based on training experience, goal, recovery quality, and weekly training frequency.

Estimate recommended daily carbohydrate intake in grams based on body weight, activity level, and goal, with an option to base the result on total calorie intake.

Estimate recommended daily carbohydrate intake for muscle gain based on body weight, training duration, training intensity, weekly training frequency, and calorie surplus goal. The calculation increases carbohydrate needs with harder and more frequent training while accounting for the higher energy demands of a larger surplus.

Estimate your recommended daily fat intake in grams based on daily calorie intake, dietary goal, activity level, and age.