Health & Fitness Calculators

Body-mass index from height and weight, with a healthy-range indicator.

Infusion drip rate in drops per minute (gtt/min) from the fluid volume, the tubing drop factor and the infusion time.

How much water to drink per day — ounces, litres and glasses — from your weight, exercise minutes and climate.

An estimate of your blood alcohol content (Widmark) from drinks, size, ABV, weight, sex and hours — with the 0.04 and 0.08 lines flagged.

Your ideal body weight by the Devine, Robinson, Miller and Hamwi formulas, plus the healthy-BMI weight range for your height.

Your estimated due date and conception date from your last period and cycle length, plus how many weeks along you are today.

Daily grams of protein, carbs and fat from your calorie target and a goal preset (balanced, high-protein, low-carb, endurance, keto).

Your estimated one-rep max from a set of reps at a weight (Epley, Brzycki, Lombardi) and the training loads at 95% down to 70%.

Body-fat percentage by the US Navy tape method from height, neck, waist and hip, with an essential-to-obese band for your sex.

Pace per mile and per km and your speed from a race distance and finish time — and the finish time a target pace gives you.

Your max heart rate and the five training zones in bpm — straight percent-of-max or Karvonen using your resting heart rate.

Your basal metabolic rate and daily calorie burn (Mifflin-St Jeor), with cut, maintain and bulk calorie targets.