Categories
Health
BMI, pace, heart rate, pregnancy and wellness calculators
63 calculators
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BMI Calculator
Calculate your Body Mass Index using metric or imperial units.
Pace Calculator
Calculate running pace, time or distance for any workout.
Target Heart Rate Calculator
Find your target heart rate zone for exercise.
BMI Calculator for Women
BMI specifically for adult females.
Conception Calculator
Estimate date of conception.
Gestation Calculator
Pregnant animal gestation estimates.
BMR Calculator
Estimate your basal metabolic rate using the Mifflin-St Jeor formula.
TDEE Calculator
Total Daily Energy Expenditure based on BMR and activity.
Body Fat Calculator
US Navy body fat estimator based on circumference measurements.
Lean Body Mass Calculator
Estimate lean body mass using the Boer formula.
Ideal Weight Calculator
Devine formula for ideal body weight.
Waist to Hip Ratio Calculator
Compute your waist-to-hip ratio, a health risk indicator.
Waist to Height Ratio
A simple body shape indicator.
Calories Burned Walking
Estimate calories burned while walking.
Calories Burned Running
Estimate running calorie burn.
Calories Burned Cycling
Calculate calories burned cycling.
Calories Burned Swimming
Calories burned in a swim session.
Calories for Weight Loss
Daily calorie target to reach a weight-loss goal.
Water Intake Calculator
Daily water recommendation based on body weight.
Protein Intake Calculator
Estimate daily protein needs.
Carb Intake Calculator
Daily carbohydrate target from total calories.
Fat Intake Calculator
Daily fat intake from calories.
Macro Calculator
Protein/carb/fat split from total calories.
Pregnancy Due Date Calculator
Estimate due date from last menstrual period (LMP).
Ovulation Calculator
Estimate likely ovulation day of the cycle.
Menstrual Cycle Calculator
Predict next period start date.
Adjusted Body Weight
ABW = IBW + 0.4 * (actual − IBW).
Blood Alcohol Content Calculator
Estimate BAC using the Widmark formula.
Pace Conversion Calculator
Convert between min/km and min/mile.
Max Heart Rate Calculator
Maximum heart rate estimate (220 − age).
Resting Heart Rate Fitness
Gauge fitness level from resting HR.
One Rep Max Calculator
Estimate 1RM from weight and reps (Epley).
VO₂ Max Calculator
Aerobic fitness estimate from max HR and RHR.
Sleep Cycle Calculator
Find bedtime using 90-minute sleep cycles.
Target Weight Days
Days needed to reach a weight goal at a deficit.
Punnett Square Calculator
Calculate genotype ratios for a monohybrid cross.
Allele Frequency Calculator
Hardy-Weinberg allele frequencies.
Dog Age Calculator
Convert dog age to human years.
Cat Age Calculator
Convert cat age to human years.
Rabbit Age Calculator
Convert rabbit age to human years.
QTc Interval (Bazett)
QTc = QT / √RR.
eGFR (MDRD) Calculator
Estimated GFR by MDRD.
Creatinine Clearance (Cockcroft-Gault)
CrCl estimate.
Glasgow Coma Scale
Total GCS from E + V + M.
Apgar Score Calculator
Total out of 10.
Glycemic Load Calculator
GL = (GI × carbs) / 100.
Meal Calories Calculator
Calories from protein, carbs, fat.
Keto Macros Calculator
Standard keto split (5/25/70).
Fiber Intake Calculator
Recommended 14g/1000 kcal.
Added Sugar Limit (AHA)
Max grams of added sugar (M: 36g, F: 25g).
Sodium Limit (AHA)
Max sodium based on activity.
Caffeine Safe Daily Limit
~3 mg/kg (up to 400 mg).
Vitamin D Daily Need
Approximate RDA by age.
Omega-3 Intake Calculator
Daily EPA+DHA target.
Food Calorie Scaler
Scale known nutrition by serving.
TDEE for Weight Loss
500 kcal deficit ~ 1 lb/week.
TDEE for Weight Gain
300–500 kcal surplus.
Dog Food Daily Amount
Cups/day by weight (dry food).
Cat Food Daily Amount
Kcal ≈ 30×kg + 70.
Dog Water Intake
≈1 oz per pound.
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