Free health and wellness tools
Calculate your BMI and calorie needs, estimate a due date, take a break with a guided breathing exercise, or do a first check of your eyesight, color vision or hearing. These tools give you useful benchmarks but don't replace advice from a healthcare professional.
Body and wellness
- BMI CalculatorCalculate your body mass index from your weight and height, with your WHO category and a healthy weight range.
- Calorie CalculatorEstimate how many calories you need per day based on your profile and activity, with targets to maintain, lose or gain weight.
- Due Date CalculatorEstimate your due date and how many weeks pregnant you are from your last period or the date of conception.
- Breathing ExerciseAnimated breathing guide: coherent breathing 365, 4-6, 4-7-8, box breathing or your own custom pace.
Eye and hearing tests
- Online Eye TestEstimate your visual acuity on screen with tumbling E letters, one eye at a time, plus an astigmatism test and a contrast test. A rough screening only.
- Color Blindness TestScreen for red-green or blue-yellow color blindness with 12 colored dot plates, and see a photo the way a color blind person does.
- Hearing TestFind out how old your ears are with higher and higher pitched tones, then compare your left and right ear.
Frequently Asked Questions
Do these tests replace a medical exam?
No. They give a first indication. If you have any doubt or discomfort, see a doctor, an eye specialist or an ear, nose and throat specialist.
Is my health data saved?
No. Your weight, height and test results stay in your browser and are never sent anywhere.
Do I need any special equipment?
For the hearing test, use headphones or earbuds. For the eye test, sit at the distance shown from the screen.