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> Index of every page on this site: [llms.txt](https://methodcalculator.com/llms.txt)

# **Fitness & Health Calculators**

Understand your body with standard, peer-reviewed formulas. Results are estimates for healthy adults and are not a substitute for medical advice.

- [**BMI Calculator**Calculate your Body Mass Index (BMI) in metric or US units, see your weight category and the healthy weight range for your height.](https://methodcalculator.com/bmi-calculator)
- [**BMR Calculator**Estimate your Basal Metabolic Rate with the Mifflin-St Jeor, Harris-Benedict or Katch-McArdle formula, plus daily calories for each activity level.](https://methodcalculator.com/bmr-calculator)
- [**Calorie Calculator**Find out how many calories you need per day to maintain, lose or gain weight based on your age, sex, height, weight and activity level.](https://methodcalculator.com/calorie-calculator)
- [**Body Fat Calculator**Estimate body fat percentage with the U.S. Navy method using neck, waist and hip measurements, plus a BMI-based estimate and fat category.](https://methodcalculator.com/body-fat-calculator)
- [**Ideal Weight Calculator**Find your ideal body weight using the Robinson, Miller, Devine and Hamwi formulas, plus the healthy weight range based on BMI.](https://methodcalculator.com/ideal-weight-calculator)
- [**Macro Calculator**Calculate your daily protein, carbohydrate and fat targets in grams from your calorie needs and goal, with balanced, low-carb and high-protein splits.](https://methodcalculator.com/macro-calculator)
- [**Pace Calculator**Calculate running pace, finish time or distance. Enter any two values to find the third and see split times for 5K, 10K, half marathon and marathon.](https://methodcalculator.com/pace-calculator)
- [**Pregnancy Due Date Calculator**Estimate your baby's due date from your last period, conception date or IVF transfer date, and see how many weeks pregnant you are today.](https://methodcalculator.com/pregnancy-due-date-calculator)
- [**Water Intake Calculator**Estimate how much water you should drink per day from your weight, exercise time, climate and pregnancy or breastfeeding, in liters, cups and ounces.](https://methodcalculator.com/water-intake-calculator)
- [**One Rep Max Calculator**Estimate your one rep max (1RM) from the weight and reps you can lift using the Epley, Brzycki and other formulas, plus a table of training percentages.](https://methodcalculator.com/one-rep-max-calculator)
- [**Heart Rate Zone Calculator**Find your maximum heart rate and the five training zones from your age, or use your resting heart rate with the Karvonen method for a personal result.](https://methodcalculator.com/heart-rate-zone-calculator)
- [**Lean Body Mass Calculator**Estimate your lean body mass with the Boer, James and Hume formulas from your sex, height and weight, or from a known body fat percentage.](https://methodcalculator.com/lean-body-mass-calculator)
- [**Sleep Calculator**Find the best time to go to bed or wake up based on 90-minute sleep cycles, so you wake between cycles and feel rested instead of groggy.](https://methodcalculator.com/sleep-calculator)

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## Sitemap

See the full [sitemap](https://methodcalculator.com/sitemap.md) for all pages.