Fitness & Health Calculators

Find your body mass index and see which WHO category you fall into.

Estimate BMR, maintenance calories, and weight change targets using Mifflin–St Jeor.

Measure estimated body fat % plus lean/fat mass via the U.S. Navy method.

Convert distance and time into pace, speed, and finish projections.

Review healthy weight ranges based on BMI guidelines.

Project strength maxes based on reps and weight lifted.

Calculate basal metabolic rate based on age, height, weight, and sex.

Compare ideal weight ranges using popular clinical formulas.

Check body fat estimates using the U.S. Army circumference method.

Estimate lean mass using multiple established formulas.

Estimate calories burned during common activities.

Find training zones for warmups, cardio, and recovery.

Split daily calories into protein, carbs, and fat targets.

Estimate carb targets for activity level and goals.

Set protein targets for maintenance or muscle gain.

Estimate total daily energy expenditure with activity factors.

Plan daily fat intake ranges for energy and satiety.

Estimate points based on food nutrition inputs.

Estimate pregnancy milestones using last period dates.

Predict conception windows and fetal age based on due dates.

Predict likely conception dates based on due date or last period.

Check recommended weight gain ranges by trimester.

Project due dates using last period, conception date, or ultrasound.

Estimate fertile windows and ovulation timing.

Track cycle length, next period, and fertility windows.

Estimate kidney filtration rate from common lab values.

Compute body surface area using height and weight.

Review BMI thresholds used for clinical screening.

See weight ranges that align with BMI definitions.

Learn how body type categories are commonly classified.

Estimate blood alcohol concentration over time.