Health & Lifestyle Calculators
Tools for health, fitness, nutrition, cycling, and everyday lifestyle calculations to help you stay on track.
Body Metrics
BMI Calculator
Calculate your Body Mass Index and assess your weight category.
BMR Calculator
Estimate basal metabolic rate using Mifflin-St Jeor equation.
Body Fat Calculator
Estimate body fat percentage using circumference-based formulas.
Ideal Weight Calculator
Determine your ideal body weight based on height and gender.
Lean Body Mass Calculator
Calculate lean body mass from total weight and body fat percentage.
VO2 Max Calculator
Estimate VO2 max from resting and max heart-rate values.
Nutrition
Calorie Calculator
Calculate your BMR and daily calorie targets based on activity level and goals.
Calorie Deficit Calculator
Estimate expected weekly weight change from calorie deficit.
Calories Burned Calculator
Estimate calories burned from MET, weight, and workout duration.
Calories Burned Cycling
Calculate calories burned during cycling sessions based on intensity.
Macro Calculator
Estimate daily protein, carbs, and fat targets from calorie goals.
Protein Intake Calculator
Determine your daily protein needs based on weight and activity level.
Resting Metabolic Rate Calculator
Estimate resting metabolic rate using the Mifflin-St Jeor equation.
Running Calories Burned Calculator
Estimate calories burned while running from weight and duration.
TDEE Calculator
Calculate Total Daily Energy Expenditure for weight management.
Tip Calculator
Calculate tips and split bills for dining out and services.
Water Intake Calculator
Calculate your recommended daily water intake for optimal hydration.
Activity & Performance
Age Calculator
Calculate your exact age in years, months, and days.
Bike Gear Calculator
Compute gear inches and speed estimates for your bicycle setup.
Climbing Grade Converter
Convert selected YDS sport climbing grades to approximate French grades.
Cycling FTP Calculator
Estimate FTP and power zones from a 20-minute cycling test.
Cycling Power-to-Weight Calculator
Calculate your FTP power-to-weight ratio for cycling performance.
Fuel Efficiency Calculator
Calculate MPG, fuel costs, and trip expenses for your vehicle.
GPA Calculator
Calculate your weighted GPA and letter grade from course grades.
Health Calculator
Health and wellness tools.
Heart Rate Zone Calculator
Estimate training heart-rate zones using max heart rate.
Hiking Pace Calculator
Estimate hiking time based on distance, elevation gain, and fitness level.
One Rep Max Calculator
Estimate one-rep max strength from training weight and reps.
Pace Per Mile Calculator
Calculate running pace per mile and per kilometer.
Pregnancy Due Date Calculator
Estimate due date based on the first day of the last menstrual period.
Sleep Calculator
Estimate wake-up or bedtime using common 90-minute sleep cycles.
Steps to Miles Calculator
Convert step count to approximate miles and kilometers.
Target Heart Rate Calculator
Estimate your target training heart-rate zone by intensity.
Tire Pressure Calculator
Find optimal tire pressure for your bike based on weight and tire size.
Trail Elevation Gain Calculator
Estimate average trail grade and vertical climbing speed.
Weight Calculator
Calculate weight and conversions.