Health & Fitness
BMI, BMR, calorie needs, age, and body metric calculators.
New Age Calculator
Find your exact age in years, months and days, plus a birthday countdown.
New BMI Calculator
Calculate your Body Mass Index and healthy-weight range, metric or imperial.
New BMR & Calorie Calculator
Find your BMR and daily calorie needs (TDEE) with weight-loss, maintenance and gain targets, macros and 3 formulas.
New Pregnancy Due Date Calculator
Find your baby's due date from your last period, conception, IVF transfer or ultrasound — with trimester dates and milestones.
New Macro Calculator
Find your daily protein, carb and fat targets from your TDEE, goal and diet style.
New Ideal Weight Calculator
See your ideal weight by four clinical formulas (Devine, Robinson, Miller, Hamwi) — metric or imperial.
New Body Fat Calculator
Estimate your body fat percentage using the US Navy tape-measure method — no skinfold calipers needed.
New Ovulation Calculator
Find your fertile window, ovulation date and next period from your cycle length and last period.
New Sleep Calculator
Find the best bedtime or wake-up time based on 90-minute sleep cycles to wake up refreshed.
New Water Intake Calculator
Calculate your daily water needs from your weight, activity level and climate.
New Calories Burned Calculator
Estimate calories burned for 60+ exercises using MET values and your weight and duration.
New Running Pace Calculator
Calculate your running pace, finish time and splits for any distance — 5K, 10K, half or full marathon.
New TDEE Calculator
Total Daily Energy Expenditure calculator — maintenance calories, cut & bulk targets. Mifflin-St Jeor + Harris-Benedict. 100% private.
New Dog Age Calculator
Convert dog years to human years by breed size using the 2020 DNA methylation study. Life stage, remaining lifespan, and age chart.
New Protein Calculator
Daily protein intake calculator based on ISSN guidelines — adjust for muscle gain, fat loss, or maintenance. Includes meal distribution guide.