Health calculators
Explore body measures, nutrition, exercise, pregnancy, and health screening estimates in one health collection.
Tool map
What are you trying to work out?
Body measures
9Body size, composition, energy needs, and personal measurements.
A Body Shape Index Calculator · Army Body Fat Calculator · BMI Calculator
Nutrition
7Calories, nutrients, hydration, and dietary planning.
Albumin Globulin Ratio Calculator · Alcohol Units Calculator · Anion Gap Calculator
Exercise & fitness
2Training, performance, heart-rate, and activity estimates.
Heart Rate Reserve Zone Calculator · One Rep Max Calculator
Pregnancy
1Pregnancy dates, growth, and related estimates.
Pregnancy Due Date Calculator
Health screening
9Clinical scores, lab measures, and screening calculations.
2020 Vision Calculator · 4Ts Score Calculator · 6 Minute Walk Test Calculator
More health tools
3Additional health and wellbeing estimates.
Aa Gradient Calculator · Biorhythm Calculator · Sleep Schedule Calculator
A useful place to start
Choose a body or nutrition tool for personal tracking, an exercise tool for training estimates, or a screening tool when you know the clinical measure. Health results are informational and do not diagnose conditions.
BMI Calculator
Calculate adult BMI from metric or imperial height and weight, with screening categories, range math, and interpretation limits.
Resting Energy Expenditure Calculator
Estimate predicted resting energy expenditure from age, sex, height, and weight using the page's Mifflin equations.
BMR Calculator
Estimate BMR with Mifflin-St Jeor and Harris-Benedict equations, then compare activity-adjusted daily energy estimates.
Legacy Circumference Body Fat Estimate
Apply a named legacy calculator coefficient set to circumference entries and derive fat and lean mass without health-category claims.
Blood Pressure Calculator
Categorize an adult blood pressure reading from systolic and diastolic values, using the exact threshold logic in the calculator and clinical cautions.
2020 Vision Calculator
Review lifestyle inputs linked with eye health education, see the exact activity, diet, and smoking score logic, and learn the limits of this vision risk flag.
4Ts Score Calculator
Estimate 4Ts pretest probability for heparin-induced thrombocytopenia by summing thrombocytopenia, timing, thrombosis, and other-cause scores.
6 Minute Walk Test Calculator
Compare six-minute walk distance with sex-specific predicted values, lower limits, and percentage expected using the equations in the calculator form.