Fitness & Health Calculators

Calculate Body Mass Index and category for adults.

Estimate daily calorie needs (TDEE) for maintenance, loss, or gain.

Body-fat % from a tape measure (Navy method), with lean mass and ACE category.

Calculate Basal Metabolic Rate: calories your body burns at rest, with all three reference formulas.

Ideal body weight by height: Devine, Hamwi, Robinson, Miller, and the BMI healthy range.

Solve for pace, time, or distance with min/km + min/mile and per-mark splits.

Weeks pregnant, trimester, due date, and a complete milestone timeline, from LMP or conception date.

Estimate the most likely conception date, with a 3-day window, from your last period or due date.

Estimated due date (EDD) from LMP, ultrasound, or conception, with a full 40-week milestone timeline.

Personalised daily protein, carbs, and fat from Mifflin-St Jeor BMR, activity level, and goal.

Healthy weight-gain range by week and pre-pregnancy BMI.

Official U.S. Army tape test (AR 600-9): body fat percentage with instant Pass/Fail by age and gender.

Personalised daily carbohydrate target by body stats, activity level, and goal, with six carb frameworks compared side by side.

Calculate your lean body mass using the Boer, James, and Hume clinical formulas, with body-fat percentage estimate and side-by-side formula comparison.

Healthy weight range by height using WHO BMI standards, with a BMI reference table and optional current-weight BMI check.

Calories burned for 45+ exercises from MET values, body weight, and duration.

Estimate your 1RM with six formulas : Epley, Brzycki, Lombardi, Mayhew, O'Conner, and Wathan, plus a full percentage chart.

Target zones for fat-burn, cardio, and peak training using Karvonen.

Personalised daily protein target by goal and activity level, based on ISSN, ACSM, and Morton et al. ranges. With per-meal breakdown and food equivalents.

Personalised daily fat intake by body stats, activity level, and goal, with fat type targets (saturated, MUFA, PUFA, omega-3) and six dietary frameworks compared.

Total Daily Energy Expenditure: TDEE, per-goal calorie targets, and protein-first macros from three BMR formulas.

Predict your next ovulation date, your 6-day most fertile window, and the due date if you conceive, with a visual calendar.

Estimated conception date from due date or last menstrual period.

Predicted next periods, ovulation, and fertile days.

Estimate kidney function from serum creatinine using the CKD-EPI 2021 equation. Shows eGFR in mL/min/1.73m², CKD stage (G1–G5), kidney function percentage, MDRD comparison, and a full colour-coded stage reference table.

Identify your somatotype: ectomorph, mesomorph, or endomorph, using the Heath–Carter method. Scores on the 1–7 scale, body shape, frame size, and personalised diet and training guidance.

Calculate BSA in m² using four validated clinical formulas: Mosteller, Du Bois, Haycock, and Gehan-George. Used for chemotherapy dosing, GFR normalization, and cardiac indexing.

Blood alcohol content estimate from drinks, weight, and time.

Calculate your BMI and see where it falls on the WHO thinness scale and DSM-5 anorexia nervosa severity thresholds, a clinical reference with eating disorder resources.

Estimate SmartPoints, PointsPlus, and Original WW points for any food, all three systems at once from nutrition facts.

Overweight classification based on BMI and waist-to-height ratio.