Workout Programming & Optimization
Optimize your workout variables including volume, intensity, recovery, warm-ups, and training intervals.
37 calculators available
Bike Tire Pressure Calculator
Calculate optimal front and rear tire pressure based on rider weight, tire width, bike type, tire setup, and surface conditions.
Cycling Rolling Resistance Calculator
Calculate rolling resistance force and watt cost from Crr, total weight, speed, and surface type. Compare tire options and see power impact.
Rowing Race Pace Calculator
Plan your rowing race pace with 500m-by-500m split targets. Choose even, negative, or controlled-start pacing strategies with power and stroke rate guidance.
RPE Load Calculator
Log weekly sessions and calculate total training load, monotony, and strain using the Foster session-RPE method with visual load distribution.
Volume-to-Intensity Ratio Calculator
Analyze training sessions for total volume (tonnage), average intensity (%1RM), Prilepin zone classification, and session type identification.
Run-Walk Pace Calculator
Calculate your effective pace and finish time using the Galloway run-walk method. Set custom ratios, estimate calories, and use the Magic Mile test for race predictions.
Tinman Running Calculator
Estimate vVO₂max from a race result and get four Tinman training pace zones — Easy, Critical Velocity, Interval, and Repetition — with CV workout suggestions.
Hansons Marathon Training Calculator
Calculate Hansons training paces from your goal marathon time or recent race. 4 pace zones, race equivalency table, SOS day structure, and optional heat adjustment.
Karvonen Heart Rate Calculator & Formula
Calculate personalized heart rate zones using the Karvonen (HRR) method with 6 MHR formulas and side-by-side Karvonen vs %MHR comparison.
HIIT Timer
Run a premium HIIT timer with warm-up, work, rest, rounds, sets, cool-down, fullscreen mode, sound cues, and saved workouts.
Daily Energy Requirements Calculator (TDEE Components)
Calculate total daily energy expenditure broken into BMR, TEF, NEAT, and EAT components. Uses 5 BMR formulas with occupation-based NEAT and exercise-based EAT.
Target Heart Rate Zone Calculator
Calculate your 5 heart rate training zones using the Karvonen method with 4 MHR formulas (Tanaka, Gulati, Fox, HUNT). Includes goal-based recommendations and formula comparison.
Harris-Benedict Equation Calculator
Calculate BMR with the Original (1919) and Revised (1984) Harris-Benedict equations, TDEE, Mifflin-St Jeor comparison, and goal-based calorie targets.
Mifflin-St Jeor Equation Calculator
Calculate your Resting Energy Expenditure and TDEE using the Mifflin-St Jeor equation, with Harris-Benedict comparison, goal adjustments, and macro suggestions.
RMR Calculator – Resting Metabolic Rate
Estimate your Resting Metabolic Rate with three formulas (Mifflin-St Jeor, Cunningham, Katch-McArdle), BMR comparison, and NEAT estimate.
Galpin Equation Calculator
Calculate personalized fluid intake during exercise using the Galpin Equation with intensity and environment adjustments.
AMR (Active Metabolic Rate) Calculator
Calculate total daily energy expenditure from resting metabolism and activity level with goal-based calorie adjustments.
REE (Resting Energy Expenditure) Calculator
Compare resting energy expenditure across four validated formulas: Mifflin-St Jeor, Harris-Benedict, Cunningham, and WHO/FAO.
Rest Time Between Sets Calculator
Get science-based rest period recommendations by training goal, exercise type, and intensity with PCr recovery tracking.
Workout Recovery Time Calculator
Estimate workout recovery time and readiness score based on training intensity, sleep, nutrition, age, and stress factors.
Thermic Effect of Food (TEF) Calculator
Calculate the thermic effect of food from your macro intake. Compare TEF across diet types with protein, carb, and fat coefficients from research.
Daily Water Intake Calculator
Calculate your daily water intake based on body weight, exercise, climate, and life stage. Includes timing schedule, hourly pace, and NASEM references.
Katch-McArdle Calculator
Estimate resting metabolic rate using the Katch-McArdle equation with lean body mass. Includes TDEE activity multipliers and a guide to body fat estimation methods.
Cunningham Equation Calculator
Estimate resting metabolic rate using the Cunningham equation with lean body mass. Compare both the 1980 and 1991 formula versions with TDEE activity multipliers.
Gym Workout Tracker
Track your gym workouts, log exercises, sets, reps, and weights with progress visualization.
Online Interval Timer
Run a live interval timer with presets, custom phases, fullscreen controls, sound cues, and saved routines for workouts or focus sessions.
Japanese Interval Walking Calculator
Plan your Japanese interval walking sessions alternating between fast and slow walking intervals.
Physical Activity Calculator
Estimate calories burned and activity level based on your daily physical activities and exercises.
Zone 2 Heart Rate Calculator
Calculate your Zone 2 heart rate training range for optimal fat burning and aerobic base building.
Tempo & TUT Calculator
Calculate time under tension from tempo notation, plan optimal tempos for your goals, and track total session TUT with three modes backed by research.
Muscle Recovery Calculator
Determine optimal rest periods between workouts based on muscle group, intensity, and training experience.
Overtraining Calculator
Assess your risk of overtraining based on training load, recovery, sleep, and lifestyle factors.
Progressive Overload Calculator
Plan your strength progression with calculated weight increases for continuous gains.
Sets and Reps Calculator
Find the optimal sets and reps for your training goals, whether strength, hypertrophy, or endurance.
Training Volume Calculator
Track and optimize your weekly training volume per muscle group for maximum gains.
Workout Intensity Calculator
Monitor and adjust your training intensity to optimize workout effectiveness and avoid burnout.
Workout Warm-Up Calculator
Calculate optimal warm-up sets, weights, and reps to prepare for your working weight safely.