Health

Daily calorie burn from height, weight, age and activity

What four clinical formulas say your weight should be

Split a calorie target into protein, carbohydrate and fat

Five training zones from your age and resting heart rate

Pace per kilometre and mile, and equivalent finish times

Estimate body fat from tape measurements

How much water to drink a day, adjusted for exercise and heat

A daily protein range for your weight and training

Estimated due date and trimester dates from the last period

Bedtimes that wake you at the end of a sleep cycle

Estimate blood alcohol concentration from units drunk, body weight, sex and time elapsed using the Widmark formula, against the UK and Scottish drink drive limits

Estimate VO2 max from a Cooper 12 minute run, a 1.5 mile run time, resting heart rate, or a race result, rated against age and sex norms

Estimate the fertile window, ovulation date and next period from the last period date and usual cycle length, using the luteal phase method

Work out days to adjust after a flight, with a light exposure and sleep shift plan for the days before and after, from the time zones crossed and direction

Convert blood glucose between mmol/L and mg/dL, and HbA1c between the IFCC (mmol/mol) and DCCT (percent) units with the estimated average glucose that HbA1c implies

Work out the NHS blood pressure band for a systolic and diastolic reading, and the reading that would move it into the next band

Compare the Du Bois, Mosteller, Haycock and Boyd formulas for body surface area from height and weight

Build a stretching routine for a target area from the minutes available and your level, warm up first and each hold timed

Work out evenly spaced dose times across your waking hours from how many doses a day you take, plus the gap between doses