TechEngage calculators give quick answers to everyday health and planning questions, with a short explanation of what each result means and when to ask a professional.
Age CalculatorWork out an exact age in years, months and days between any two dates.Open calculatorBMI CalculatorCheck your body mass index from height and weight, with the standard adult BMI categories.Open calculatorDaily Caloric Intake CalculatorEstimate daily calories to maintain, lose or gain weight based on age, size and activity.Open calculatorPregnancy Due Date CalculatorEstimate a due date from the first day of the last menstrual period.Open calculator
How to use these calculators
- Estimates, not diagnoses: health results such as BMI, calorie needs and due dates are general estimates. Talk to a doctor, midwife or registered dietitian before making medical, pregnancy or diet decisions.
How we maintain our tools
We review each calculator when the guidance behind it changes and remove any tool we can no longer keep accurate, so this page only lists calculators that work. Spotted a wrong result or have an idea for a new tool? Email [email protected] with the subject line “Tools feedback”. Read more about how we work in our editorial standards.