Health Tools

Browse our complete suite of health and wellness tools covering calories, BMI calculations, macro tracking, body metrics, pregnancy planning, running pace analysis, heart rate zones, and daily wellness check-ins. ToolYard keeps every calculation fast, completely private, and easy to revisit whenever you need a quick health estimate. From fitness enthusiasts to those tracking pregnancy milestones, these calculators support your wellness journey with accurate, browser-based tools that work instantly without sharing personal data.

Use this category page when you want to compare a few closely related tools before choosing the right one. It is especially helpful when you know the broader task, but still need to decide which calculator or browser utility best matches the job.

What you can do with these health tools

Estimate common wellness metrics such as BMI, calorie needs, body composition, and activity pacing
Check pregnancy timing, running pace, and heart rate zones with quick browser-based tools
Use the results as practical planning inputs while keeping calculations private and easy to revisit

Why this category matters

These tools are best used for general planning and education. They can help you think more clearly about numbers, but they do not replace individual medical advice.

All Body Measurements Body Metrics Fitness Nutrition Pet Care Pregnancy Sports Wellness

Army Body Fat Calculator

Calculate body fat percentage using U.S. Army circumference method and check if you meet Army standards.

Calories Burned Calculator

Calculate calories burned during various activities using METs (Metabolic Equivalent of Task).

One Rep Max Calculator

Estimate your one-rep max using different formulas and calculate training percentages.

TDEE Calculator

Calculate your Total Daily Energy Expenditure (TDEE) and BMR using the Mifflin-St Jeor equation.

Macro Calculator

Calculate optimal macronutrient distribution based on your daily calories and goals.

BMI Calculator

Find your Body Mass Index (BMI) using height and weight.

Breathing Timer

Follow guided Box Breathing or 4-7-8 exercises to reduce stress.

Pet Age Converter

Convert your dog or cat's age into human years instantly.

Bra Size Converter

Convert bra sizes between US/UK, EU, FR/ES, AU/NZ, and JP or estimate from measurements with sister sizes.

Calorie Calculator

Calculate BMR, TDEE, and daily calorie targets for weight loss, maintenance, or muscle gain with macro recommendations.

Body Fat Calculator

Estimate body fat percentage using US Navy method, BMI formula, or skinfold measurements. Calculate lean body mass and body composition.

BMR Calculator

Calculate your basal metabolic rate and daily calorie needs using Mifflin-St Jeor, Harris-Benedict, or Katch-McArdle formulas.

Ideal Weight Calculator

Calculate healthy weight ranges using Devine, Robinson, Miller, Hamwi, and BMI formulas. Find your ideal body weight instantly.

Pace Calculator

Calculate running pace, speed, and finish time. Supports min/km and min/mile with race predictions for 5K, 10K, half marathon, and marathon.

Lean Body Mass Calculator

Calculate lean body mass using Boer, James, and Hume formulas. Includes body fat mass, percent body fat, and FFMI.

Target Heart Rate Calculator

Calculate target heart rate zones using Karvonen method or standard formulas. Find fat-burning, cardio, and VO₂ max training zones.

Age Calculator

Calculate your exact age in years, months, and days.

Pregnancy Calculator

Calculate your due date using your last menstrual period (LMP) and cycle length. Get estimated conception date, pregnancy week, trimester, and key milestones.

Pregnancy Weight Gain Calculator

Estimate recommended pregnancy weight gain based on pre-pregnancy BMI using IOM/CDC guidelines. See week-by-week targets and track progress.

Conception Calculator

Estimate your likely conception date and fertile window from LMP, due date, or ovulation test. Fast, private, and easy.

Pregnancy Due Date Calculator

Estimate your pregnancy due date using LMP, conception date, ultrasound age, or IVF transfer. Fast, accurate, and private.

Ovulation Calculator

Estimate ovulation date and fertile window from LMP and cycle length. Fast, private, and easy to use.

Period Calculator

Predict your next menstrual period using your cycle length and last period date. Instant results, private, and easy to use.

Sleep Calculator

Find the best bedtime or wake-up time based on 90-minute sleep cycles.

Protein Calculator

Calculate daily protein intake in grams based on body weight and fitness goal.

BAC Calculator

Estimate blood alcohol content (BAC) using the Widmark formula from drinks, weight, and time.

Bench Press Calculator

Estimate your bench press one-rep max (1RM) from a submaximal set using multiple formulas.

Golf Handicap Calculator

Estimate your golf Handicap Index from recent rounds using the World Handicap System formula.

Life Expectancy Calculator

Estimate life expectancy and remaining years based on age and sex using U.S. Social Security Period Life Tables.

Health Calculators for Fitness, Pregnancy, and Wellness | ToolYard