Health tools
18 tools in this category.
- blood-alcohol-calculator — Estimate blood alcohol content (BAC) based on drinks, weight, gender, and time.
- bmr-calculator — Calculate your Basal Metabolic Rate using Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle formul
- body-fat-calculator — Estimate your body fat percentage using the US Navy method and BMI-based calculations.
- calorie-calculator — Calculate your Total Daily Energy Expenditure and daily calorie needs for weight loss, maintenance,
- heart-rate-zone-calculator — Calculate heart rate zones for optimal training using Karvonen or percentage methods.
- ideal-weight-calculator — Find your ideal weight range using Devine, Robinson, Miller, and Hamwi formulas.
- intermittent-fasting-timer — Track fasting periods with timer and notifications
- macronutrient-calculator — Calculate your optimal protein, carbohydrate, and fat intake for your fitness goals.
- meal-planner — Plan weekly meals with customizable templates
- one-rep-max-calculator — Calculate your one-rep max (1RM) for any exercise using proven strength formulas.
- ovulation-calculator — Track ovulation dates and fertile window based on menstrual cycle for family planning.
- pregnancy-due-date-calculator — Calculate your estimated due date, current trimester, and pregnancy milestones.
- protein-intake-calculator — Calculate daily protein needs based on weight, activity level, and fitness goals.
- running-pace-calculator — Calculate running pace, finish time, or distance for races from 5K to marathon.
- sleep-calculator — Find the best times to sleep and wake up based on 90-minute sleep cycles for optimal rest.
- tdee-calculator-advanced — Calculate Total Daily Energy Expenditure with activity level, body composition, and goals.
- water-intake-calculator — Calculate your recommended daily water intake based on weight, activity level, and climate.
- workout-timer — Customizable interval timer for HIIT, Tabata, circuit training, and rest periods.