Free Tools

Simple, free calculators for weight and health. No sign-up, no ads, nothing stored — every calculation runs in your browser. Built by the team behind Weightnote, the trend-first weight tracker for iPhone.

Free toolNo sign-up
BMI Calculator
Free BMI calculator: enter your height and weight to get your BMI, your category, and the healthy weight range for your height. Metric and imperial, no sign-up.
Free toolNo sign-up
Ideal Weight Calculator
Free ideal weight calculator: see the healthy weight range for your height (BMI-based) plus estimates from the Devine, Robinson and Hamwi formulas.
Free toolNo sign-up
Weight Loss Goal Calculator
Free calculator: enter your current weight, goal weight and weekly pace to see how long reaching your goal will take and your estimated goal date.
Free toolNo sign-up
Calorie Deficit Calculator
Free calorie deficit calculator: get your estimated maintenance calories (TDEE) and a daily calorie target for a chosen rate of weight loss.