❤️ Health & Fitness

BMI, BMR, calories, water intake, due date, heart-rate zones and more.

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BMI CalculatorCalculate Body Mass Index with category, healthy weight range and Asian cut-offs.
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BMR CalculatorEstimate your Basal Metabolic Rate and daily calorie needs.
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Body Fat Calculator (US Navy)Estimate body fat percentage from waist, neck and height measurements.
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Calorie CalculatorFind the daily calories needed to maintain, lose or gain weight, with macro split.
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Heart Rate Zone CalculatorFind your maximum heart rate and training zones using the Karvonen method.
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Ideal Weight CalculatorFind your ideal body weight using four medical formulas.
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Ovulation CalculatorEstimate your fertile window and next ovulation date.
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Pregnancy Due Date CalculatorEstimate your due date and pregnancy milestones from your last period.
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Running Pace CalculatorCalculate pace, speed or finish time for running and cycling.
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Sleep CalculatorFind the best bedtime or wake-up time based on 90-minute sleep cycles.
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Water Intake CalculatorEstimate how much water you should drink every day.
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Age CalculatorCalculate your exact age in years, months and days, with next birthday and total days lived.

About Health & Fitness tools

This section has 12 free tools including BMI Calculator, BMR Calculator, Body Fat Calculator (US Navy), Calorie Calculator, Heart Rate Zone Calculator, Ideal Weight Calculator and more. Every tool opens on its own page with a working calculator, clear explanation, formula, worked example and frequently asked questions. All results update instantly in your browser and can be exported as a snapshot image.

For general information only. These tools are not medical advice, diagnosis or treatment. Please consult a qualified doctor for health decisions.