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All Free Calculators

231 free calculators — updated regularly. No sign-up, no ads.

Standard Deviation Calculator
Calculate mean, variance, standard deviation, median, and range from any dataset.
Math Calculators
Pregnancy Weight Gain Calculator
Calculate recommended pregnancy weight gain based on pre-pregnancy BMI guidelines.
Health & Fitness
Body Type Calculator
Identify your somatotype — ectomorph, mesomorph, or endomorph — for personalized training.
Health & Fitness
Anorexic BMI Calculator
Educational BMI calculator with clinical weight categories and eating disorder helpline.
Health & Fitness
Weight Watcher Points Calculator
Estimate Weight Watchers PersonalPoints based on nutritional content.
Health & Fitness
Overweight Calculator
Determine your weight category and how much you would need to lose to reach a healthy…
Health & Fitness
Body Surface Area Calculator
Calculate body surface area (BSA) used in medical drug dosing and clinical assessment.
Health & Fitness
GFR Calculator
Estimate Glomerular Filtration Rate (eGFR) to assess kidney function.
Health & Fitness
Conception Calculator
Estimate your conception date from your due date or last menstrual period.
Health & Fitness
Healthy Weight Calculator
Find your healthy weight range based on height using BMI and established formulas.
Health & Fitness
Carbohydrate Calculator
Calculate your optimal daily carbohydrate intake for your diet and fitness goals.
Health & Fitness
Fat Intake Calculator
Calculate recommended daily fat intake based on your calorie goals.
Health & Fitness