Fitness & Weight Loss Calculators
Data-driven tools for calorie planning, energy needs, weight loss timelines, and measurable progress tracking.
5K Finish Time Predictor
Predict your 5K finish time, pace per mile, pace per kilometer, age-graded score, and practical 5K training paces from a recent race result.
Active Metabolic Rate Calculator
Estimate day-specific calorie burn from BMR, steps, workout type, workout duration, and intensity with separate NEAT and EAT outputs.
Army Body Fat Calculator
Estimate Army-style body-fat percentage from tape measurements and compare with age-based standards.
Bench Press Standards Calculator
Estimate bench press 1RM, bodyweight ratio, strength classification, percentile, and next-level progression targets.
Body Fat Goal Date Calculator
Estimate how many weeks it may take to reach a goal body fat percentage with milestone dates, scale-weight projections, and lean-mass retention context.
Body Fat Navy Method Calculator
Estimate body-fat percentage using the U.S. Navy circumference method with fat-mass and lean-mass outputs.
Body Measurement Progress Tracker
Track body-site measurement changes over time to monitor fat-loss and recomposition progress.
Body Recomposition Timeline Calculator
Estimate recomposition timeline using body-fat targets, training frequency, and protein consistency assumptions.
Calorie Cycling Calculator
Plan high, low, and rest-day calorie targets around weekly deficits or surpluses with sample macro splits for each day type.
Calorie Deficit Calculator
Calculate recommended daily calorie deficit, target intake, weekly deficit totals, and estimated time to goal weight.
Calories Burned Basketball Calculator
Estimate basketball calories burned by play style, intensity, duration, and body weight with weekly planning outputs.
Calories Burned Boxing & Martial Arts Calculator
Calculate calories burned in boxing sparring, heavy bag, kickboxing, Muay Thai, BJJ, wrestling, and MMA training using validated MET values.
Calories Burned Cycling Calculator
Calculate cycling calories burned using weight, duration, and ride intensity for indoor and outdoor workouts.
Calories Burned Dancing Calculator
Estimate dancing calories burned by style, intensity, duration, and body weight with weekly projections.
Calories Burned Elliptical Calculator
Estimate calories burned on an elliptical machine from resistance, stride rate, duration, and body weight.
Calories Burned Golf Calculator
Estimate calories burned during golf rounds based on mode, holes played, terrain, and carry load.
Calories Burned Hiking Calculator
Estimate hiking calories burned using duration, terrain, elevation gain, pack load, and body weight.
Calories Burned Housework Calculator
Estimate calories burned from household activities like cleaning, gardening, and lawn work using duration and body weight.
Calories Burned Jump Rope Calculator
Estimate jump rope calories burned using cadence, intensity, duration, and body weight with weekly planning.
Calories Burned Paddleboarding Calculator
Calculate calories burned stand-up paddleboarding for leisure, touring, racing, SUP yoga, and whitewater. Compare to kayaking, canoeing, swimming, and cycling at the same duration.
Calories Burned Pickleball Calculator
Calculate calories burned playing pickleball at recreational, competitive, and tournament levels. Compare to tennis, badminton, and other sports.
Calories Burned Pilates Calculator
Estimate calories burned in Pilates sessions by class type, level, duration, and body weight.
Calories Burned Rock Climbing Calculator
Calculate calories burned rock climbing for indoor top rope, lead, bouldering, and outdoor sport and trad climbing. Uses validated MET values from the Compendium of Physical Activities 2024.
Calories Burned Rowing Calculator
Estimate calories burned rowing from workout duration, intensity, and body weight with weekly burn projections.
Calories Burned Skiing Calculator
Estimate calories burned skiing, snowboarding, and snowshoeing based on intensity, duration, and body weight.
Calories Burned Stair Climbing Calculator
Estimate calories burned climbing stairs by duration, stair mode, and flights climbed with weekly projections.
Calories Burned Swimming Calculator
Estimate calories burned swimming from stroke type, intensity, duration, and body weight with weekly projections.
Calories Burned Tennis Calculator
Estimate tennis calories burned by singles or doubles, intensity, court surface, and duration with hydration guidance.
Calories Burned Yoga Calculator
Estimate calories burned in yoga classes by style, duration, intensity, and body weight with weekly projections.
Calories Per Day Calculator
Find how many calories to eat daily for maintenance, fat loss, or gain with macro and meal distribution guidance.
Carb Intake Calculator
Estimate daily carbohydrate targets, carb percentage, net carbs, fiber needs, and workout timing recommendations.
Cutting Phase Duration Calculator
Estimate cut duration, weekly fat-loss pace, diet-break timing, and post-cut reverse-diet targets from body-fat goals and deficit size.
Deadlift Standards Calculator
Estimate deadlift 1RM, bodyweight ratio, strength level, percentile, and progression goals from practical standards.
Diet Break Calculator
Plan structured maintenance diet breaks with expected weight trend context and deficit resumption guidance.
Fat Intake Calculator
Calculate daily fat grams, fat percentage, saturated fat limits, and omega-3/omega-6 targets from calorie goals.
FFMI Calculator
Calculate FFMI and normalized FFMI from body weight, body-fat percentage, and height to assess muscularity.
Fiber Intake Calculator
Estimate total daily fiber, soluble/insoluble targets, intake gap, hydration guidance, and gradual increase plan.
Frame Size Calculator
Estimate small, medium, or large frame size using wrist circumference, elbow breadth, height, and sex with frame-adjusted weight ranges.
Half Marathon Finish Time Predictor
Predict half-marathon finish time, pace, age-graded score, and training paces from a recent race result plus weekly mileage and long-run context.
Heart Rate Zone Calculator
Calculate five heart-rate training zones using Karvonen or percent-of-max methods.
Ideal Body Weight Calculator
Estimate ideal body weight using Devine, Robinson, Miller, and Hamwi formulas with healthy BMI range context.
Intermittent Fasting Calorie Calculator
Calculate calorie targets for intermittent fasting protocols with meal-window distribution, protein guidance, and hydration planning.
Keto Macro Calculator
Estimate keto calories and macros including net carbs, protein, fat targets, and electrolyte guidance.
Lean Body Mass Calculator
Calculate lean body mass, fat mass, and lean-mass-based BMR from body weight and body-fat percentage.
Lean Mass Goal Calculator
Estimate current versus goal lean mass, fat mass, required muscle change, and FFMI context for a target physique.
Macro Calculator for Weight Loss
Calculate daily weight-loss macros from calorie deficit goals with protein, carbs, fat, fiber, and per-meal targets.
Maintenance Calorie Adjustment Calculator
Adjust maintenance calories using weekly weight trend data with small stepwise correction guidance.
Max Heart Rate Calculator
Estimate maximum heart rate from multiple formulas and generate practical training zones.
Metabolic Adaptation Risk Calculator
Estimate metabolic adaptation risk during extended deficits using diet duration, recovery, and stress indicators.
One Rep Max Calculator
Estimate one-rep max from reps and load using multiple formulas with training percentage outputs.
Pre-Post Workout Nutrition Calculator
Calculate pre-workout and post-workout macro targets with hydration and intra-workout fueling guidance.
Protein Calculator
Calculate daily protein intake ranges based on body weight, activity level, and goal with per-meal targets.
Race Distance Predictor Calculator
Predict marathon, half marathon, and 10K finish times from any known race result using the Riegel formula. Confidence ratings and full prediction table across all distances.
Reverse Dieting Calculator
Plan reverse dieting with weekly calorie increases, projected calorie milestones, and maintenance recovery estimates.
Running Mileage Safe Increase Calculator
Calculate a safe week-by-week running mileage increase plan using the 10% rule and ACWR injury risk monitoring. Reach your target mileage while minimizing stress fracture and overuse injury risk.
Running Pace Calculator
Calculate pace per mile/km, finish time, speed, training splits, and equivalent race estimates from effort data.
Running Training Pace Calculator
Calculate all five VDOT running training pace zones (Easy, Tempo, VO2 Max, Repetitions) from your goal race time. Min/mile and min/km outputs with heart rate zones.
Squat Standards Calculator
Estimate squat 1RM, bodyweight ratio, strength classification, percentile, and next-target milestones.
Sugar Intake Calculator
Compare daily added sugar intake to guideline-based limits with teaspoons conversion, weekly budget, and reduction guidance.
Swim Pace and T-Pace Calculator
Calculate your swim T-pace (threshold pace) and all 5 training zones from a timed test swim. Get pace per 100 yards or meters, predicted set times, and open water pace adjustment.
Target Body Fat Calculator
Estimate target body weight from current body composition and desired body fat percentage with timeline guidance.
TDEE Calculator
Estimate total daily energy expenditure using multiple BMR formulas with maintenance, deficit, and surplus calorie targets.
Treadmill Speed to Pace Converter
Convert treadmill speed (mph or kph) to running pace in min/mile and min/km. Get projected race times for 5K, 10K, half marathon, and marathon with incline adjustment.
Triathlon Finish Time Calculator
Predict your triathlon finish time for Super Sprint, Sprint, Olympic, 70.3, and Ironman distances. Enter swim pace, bike speed, and run pace to get split times, total finish time, and performance category.
Visceral Fat Estimator
Estimate visceral fat level, waist-based risk category, and central adiposity risk using waist, hip, height, weight, age, and sex.
Waist-to-Height Ratio Calculator
Calculate waist-to-height ratio (WHtR) and risk category to assess central adiposity.
Walk Run Interval Calculator
Build a week-by-week walk-run progression plan with a recommended starting ratio, session duration, and full beginner-friendly progression table.
Weight Loss Calculator
Estimate weeks to goal weight, target date, calorie deficit required, and month-by-month progress projections.
Weight Loss Percentage Calculator
Calculate total weight loss, percentage of body weight lost, weekly pace, and progress toward a target weight.
Weight Loss Plateau Calculator
Compare expected versus actual diet progress to estimate metabolic adaptation, recalculated TDEE, and whether your plateau is real or mostly noise.
Wilks Score Calculator
Calculate Wilks score from bodyweight and powerlifting total with classification bands for normalized strength comparison.
About Fitness & Weight Loss Calculators
Effective body composition change relies on measurable variables: total daily energy expenditure, sustainable calorie deficits, protein targets, activity level, and timeline expectations. These calculators convert evidence-based formulas into practical day-to-day decisions.
Use these tools to set realistic daily calorie targets, forecast progress, avoid aggressive restriction, and build a sustainable plan you can maintain over the long term.