Health & Fitness Calculators
BMI, calories, body fat, pregnancy, heart rate, nutrition and fitness calculators.
31 calculators
- A1C CalculatorConvert hemoglobin A1C to estimated average glucose (eAG) in mg/dL and mmol/L, or average blood sugar back to
- Army Body Fat CalculatorEstimate body fat with the U.S. Army one-site abdominal tape method from weight and abdomen circumference, and
- Blood Alcohol Content CalculatorEstimate blood alcohol content (BAC) with the Widmark formula from drinks, body weight, sex and time, and see
- BMI CalculatorCalculate your body mass index from height in feet and inches or centimeters and weight in pounds or kilograms
- BMR CalculatorEstimate your basal metabolic rate with the Mifflin-St Jeor, revised Harris-Benedict or Katch-McArdle equation
- Body Fat CalculatorEstimate body fat percentage with the U.S. Navy tape-measure method from your height, neck, waist and hip meas
- Body Shape CalculatorFind your body shape (hourglass, pear, apple, rectangle or inverted triangle) from bust, waist and hip measure
- Body Surface Area CalculatorCalculate body surface area (BSA) in square meters with the Mosteller, Du Bois, Haycock, Gehan-George and Boyd
- Calorie CalculatorFind how many calories you need per day to maintain, lose or gain weight, based on your age, sex, height, weig
- Calories Burned CalculatorEstimate calories burned walking, running, cycling, swimming, lifting and other activities from your weight an
- Conception CalculatorEstimate when your baby was conceived from the due date or from the birth date and gestational age, with the l
- Harris-Benedict CalculatorCalculate BMR with the original 1919 and revised 1984 Harris-Benedict equations, then multiply by an activity
- Ideal Weight CalculatorFind your ideal body weight with the Devine, Robinson, Miller and Hamwi formulas and the healthy BMI range for
- Lean Body Mass CalculatorEstimate lean body mass (everything except fat) with the Boer, James and Hume formulas, or from a known body f
- Macro CalculatorSplit your daily calories into grams of protein, carbs and fat for weight loss, maintenance or muscle gain wit
- Max Heart Rate CalculatorEstimate your maximum heart rate by age with the Fox (220 − age), Tanaka, Gellish, Nes and Gulati formulas, an
- One Rep Max CalculatorEstimate your one-rep max (1RM) for bench press, squat or deadlift from weight and reps using Epley, Brzycki a
- Ovulation CalculatorPredict your ovulation day and most fertile days from the first day of your last period and your cycle length,
- Pace CalculatorCalculate running or walking pace per mile and per kilometer from distance and time, or find your finish time
- Pregnancy Due Date CalculatorEstimate your baby's due date from the first day of your last period, conception date or IVF transfer date, wi
- Pregnancy Weeks CalculatorFind out how many weeks and days pregnant you are on any date from your last period or due date, plus your tri
- Pregnancy Weight Gain CalculatorSee the recommended total pregnancy weight gain for your pre-pregnancy BMI, single or twin pregnancy, and the
- Protein CalculatorCalculate how much protein you need per day in grams based on body weight and goal, from the 0.8 g/kg RDA to h
- Steps to Miles CalculatorConvert steps to miles and kilometers using your height or a measured stride length, and find how many steps m
- Target Heart Rate CalculatorCalculate your target heart rate zone for exercise from age and resting heart rate using the Karvonen method,
- TDEE CalculatorCalculate your total daily energy expenditure (TDEE) from BMR and activity level, using Mifflin-St Jeor or Kat
- VO2 Max CalculatorEstimate VO2 max from a 12-minute Cooper run test, a 1.5-mile run time or your resting and maximum heart rate,
- Waist-to-Height Ratio CalculatorCalculate your waist-to-height ratio (WHtR) and see if your waist is less than half your height, a simple scre
- Waist-to-Hip Ratio CalculatorCalculate your waist-to-hip ratio (WHR) from waist and hip measurements and see the health risk category used
- Water Intake CalculatorEstimate how much water to drink per day in ounces, liters and cups based on your body weight, daily exercise,
- Weight Loss CalculatorFind the date you could reach your goal weight and the daily calories needed to get there, based on your TDEE