Health Calculators

Calculate body mass index with metric or imperial units and see your category.

Estimate basal metabolic rate and daily calorie needs by activity level.

Find your daily calorie target for losing, maintaining or gaining weight.

Estimate body fat percentage with the US Navy tape method.

Find your daily hydration target based on body weight and activity.

Estimate your due date and current pregnancy week from your last period.

Calculate maximum heart rate and personalised training zones.

Percentage weight loss from birth weight for newborns, with clinical thresholds.

Percentage of body weight lost, weekly rate and progress toward a goal weight.

Find the exact end date of a 0, 10 or 90 day surgical global period from the date of surgery.

Calculate the 90 day global period end date for major surgery, including the pre-operative day.

Look up the global days assigned to a CPT code and get the exact global end date for your surgery.

Calculate testicular volume in millilitres from ultrasound length, width and height using the Lambert or ellipsoid formula.

Calculate ovary volume in millilitres from ultrasound length, width and height using the prolate ellipsoid formula.