Health and body
Body mass index, healthy weight, body fat and daily calories, with the formula in plain sight and what each number leaves out.
Weight and metabolism
4 tools- Body mass index calculator BMI is a one-line number that gets used constantly and understood rarely. Here it comes with the weight range for your height, and with the part the formula misses.
- Ideal weight for your height There is no ideal weight, there are four formulas that give four different numbers. Here they are together, with the BMI range alongside, so the real spread is visible.
- Body fat percentage A tape measure and three measurements give a body fat estimate that says considerably more than BMI, because this one does know what your weight is made of.
- Daily calories you need How many calories you burn a day given your body and your activity, and the figure that matches each goal. Using the real 7,700 kcal per kilo, not the rounded "500 a day".
Other categories
- Money Compound interest, loans, mortgages and savings goals, with a breakdown of where every figure comes from and a chart of how it evolves.
- Home and energy What your appliances cost to run, what standby really adds up to, and how much material a room actually needs.
- Dates and time Days between dates, ages, working days, deadlines and hours worked. Instant results, no sign-up.
- Cars and travel Real fuel economy, what a trip costs, cost per mile and splitting the bill between everyone in the car.
- Sport Running paces, race-time equivalents, splits and training zones. For running with your head as well as your legs.
- Percentages and maths Discounts, increases, proportions, VAT, averages and grades. Everyday maths, properly explained.
- Developers Format JSON, encode and decode, convert bases and colours. The things you look up mid-afternoon with the editor open.