Health
- Pregnancy CalculatorSee how many weeks and days pregnant you are today, your trimester and a week-by-week timeline of scans and tests, from your last period, conception or due date.
- Caffeine CalculatorAdd your coffee, tea and other drinks with times to see your caffeine total against the 400 mg daily guide and how much is left, using a 5 hour half-life.
- Sleep CalculatorEnter bedtime and wake-up time to see how many hours you sleep (10 PM to 3 AM is 5 hours), or find bedtimes that fit 90-minute sleep cycles. Not medical advice.
- Water Intake CalculatorGet a rough daily water guide from your body weight, activity level and climate, in ml, liters, ounces and cups. A simple rule of thumb, not medical advice.
- BMI CalculatorWork out your body mass index from height and weight in kg and cm or in pounds, feet and inches, and see the WHO adult category. Not for children.
- Due Date CalculatorEstimate your due date from your last period, conception date, IVF embryo transfer (day 3 or day 5) or a dating ultrasound, using the ACOG method.
- Ovulation CalculatorEstimate your ovulation day and fertile window from the first day of your last period and cycle length, for three cycles. For planning, not a contraceptive.
- Calorie CalculatorEstimate BMR with Mifflin-St Jeor, multiply by activity level for daily calories (TDEE), and see a target to lose or gain weight. Not medical advice.
- Body Fat CalculatorEstimate body fat percentage with the US Navy method from height, neck, waist and hip, with fat and lean mass and ACE category. Not medical advice.
- Ideal Weight CalculatorCompare ideal body weight from height and sex using four formulas (Devine, Robinson, Miller, Hamwi) and the BMI 18.5 to 24.9 weight range. Not medical advice.
- Steps Per Mile CalculatorEstimate your stride from height and sex, or enter a measured one, to see steps per mile and per km. Convert steps to distance and distance to steps. Free.
- Period CalculatorEnter the first day of your last period, cycle length and period length to see your next 3 to 6 periods, ovulation and fertile window on a calendar.
Free health tools: Pregnancy Calculator, Caffeine Calculator, Sleep Calculator, Water Intake Calculator, BMI Calculator, Due Date Calculator, Ovulation Calculator, Calorie Calculator, Body Fat Calculator, Ideal Weight Calculator, Steps Per Mile Calculator, Period Calculator. Each one runs in your browser, shows the result as you type, and sends nothing to a server.