Free online health and lifestyle tools

Interactive story about how anxiety feeds on itself and a few ways to interrupt it.

Recipe keeper that turns a pasted link into a clean card of ingredients and steps, stored locally with no account.

Gives grams of ethanol and calories in a drink plus a rough Widmark-style blood alcohol figure.

Estimates body fat from height and body girths with the Hodgdon-Beckett method and reports BMI.

Models caffeine still in your system now and at bedtime, given doses and a chosen half-life.

Estimates daily fluid needs from body weight, activity time and heat.

Calculates fat-free mass index from weight, height and body fat percentage.

Shows reference dietary fibre targets from EFSA and the Institute of Medicine.

Computes the glycemic load of a food portion from its glycemic index and available carbohydrate.

Rate eight life areas out of ten for the last fortnight and see them plotted on a wheel.

Builds five heart rate reserve training zones from resting and maximum heart rate.

Compares Devine, Robinson, Miller and Hamwi equations for a reference body weight.

Estimates energy needs from fat-free mass with the Katch-McArdle and Cunningham equations.

Sets protein, fat and carbohydrate targets from presets tied to your goal of loss, maintenance or gain.

Models a natural upper limit for lean mass and body measurements from skeletal frame size, using the Casey Butt equations.

Estimates your one-repetition maximum using Epley and Brzycki equations and averages them.

Converts a squat, bench and deadlift total into DOTS, Wilks and IPF GL points.

Shows reference protein intakes from EFSA and sports nutrition guidance for your body weight.

Offers bedtimes or alarm times that fit 7, 8 or 9 hours of rest plus time to drift off.

Compares daily sodium and potassium intake with WHO recommendations and shows the ratio.

Estimates sweat loss and rate during exercise from pre and post weight, fluids drunk and duration.

Estimates resting expenditure with Mifflin-St Jeor and scales it by an activity factor to get daily energy needs.

Estimates VO2 max from field tests such as the Cooper 12-minute run and Rockport walk.

Calculates waist-to-hip, waist-to-height and visceral adiposity index from body measurements.