Fitness & Health
36 free calculators
BMI, calorie, macro, pregnancy, body fat, and wellness calculators.
BMI Calculator
Calculate your Body Mass Index (BMI) instantly. Supports both metric (kg/cm) and imperial (lb/in) units. Includes BMI chart and weight categories.
Calorie Calculator
Calculate how many calories you need per day to lose weight, maintain, or gain muscle. Based on Mifflin-St Jeor equation with activity multiplier.
BMR Calculator
Calculate your Basal Metabolic Rate (BMR) — the calories your body burns at complete rest. Uses Mifflin-St Jeor and Harris-Benedict equations.
TDEE Calculator
Calculate your Total Daily Energy Expenditure (TDEE). Multiply BMR by activity level to find exact calories burned per day.
Body Fat Calculator
Calculate body fat percentage using the US Navy method or BMI method. Enter measurements to estimate fat mass and lean body mass.
Ideal Weight Calculator
Find your ideal body weight based on height and gender. Uses multiple formulas including Devine, Robinson, and Miller methods.
Macro Calculator
Calculate your daily macronutrient targets for weight loss, muscle gain, or maintenance. Get personalized protein, carb, and fat goals.
Protein Calculator
Calculate your optimal daily protein intake based on weight, activity level, and fitness goal. Essential for muscle building and weight loss.
Lean Body Mass Calculator
Calculate your lean body mass (fat-free mass) based on height, weight, age, and gender. Track muscle mass and body composition.
Pace Calculator
Calculate running pace, time, and distance. Convert between min/mile and min/km. Plan your 5K, 10K, half marathon, and marathon race time.
Target Heart Rate Calculator
Calculate target heart rate zones for fat burning, cardio, and peak performance. Find max heart rate by age using Karvonen method.
One Rep Max Calculator
Calculate your one rep max (1RM) for bench press, squat, and deadlift. Use Epley, Brzycki, and other formulas to estimate max strength.
Pregnancy Calculator
Calculate your pregnancy due date, current week, and trimester. Enter your last menstrual period (LMP) or conception date.
Ovulation Calculator
Calculate your ovulation date and fertile window. Track your most fertile days for conception or natural family planning.
Period Calculator
Track your menstrual cycle and predict your next period. Calculate period dates for the next 12 months based on cycle length.
Calories Burned Calculator
Calculate calories burned during exercise and daily activities. Over 100 activities including running, cycling, swimming, and strength training.
Sleep Calculator
Calculate the best time to go to sleep or wake up based on sleep cycles. Avoid waking mid-cycle to feel refreshed and alert.
BAC Calculator
Estimate blood alcohol content (BAC) based on drinks consumed, body weight, time, and gender. Know when it's safe to drive.
Army Body Fat Calculator
Calculate body fat percentage using the official US Army circumference method. Check compliance with Army body fat standards by age and sex.
Pregnancy Weight Gain Calculator
Calculate recommended pregnancy weight gain based on pre-pregnancy BMI using IOM (Institute of Medicine) guidelines. Track weight gain week by week.
Due Date Calculator
Calculate your estimated due date (EDD) from your last menstrual period (LMP). See pregnancy milestones, current week, trimester, and days remaining.
Conception Calculator
Calculate your estimated ovulation date and fertile window from your last menstrual period and cycle length. Find the best days to conceive.
Carbohydrate Calculator
Calculate your daily carbohydrate intake in grams from TDEE and target carb percentage. Compare low-carb, moderate, and high-carb diet breakdowns.
Fat Intake Calculator
Calculate your recommended daily fat intake in grams from TDEE and target fat percentage. Shows saturated fat limits and unsaturated fat targets per AHA guidelines.
Healthy Weight Calculator
Find the healthy weight range for your height based on BMI 18.5-24.9. See your ideal weight, current BMI, and how much to gain or lose to reach a healthy range.
Overweight Calculator
Calculate whether you are overweight or obese by BMI and find exactly how many kg/lbs you need to lose to reach a healthy weight range.
GFR Calculator
Calculate estimated GFR (eGFR) using the CKD-EPI 2021 equation from creatinine, age, and sex. Determine kidney function stage and CKD classification.
Bra Size Calculator
Calculate your bra size in US, UK, and EU sizing from bust and underbust measurements. Includes sister sizes and fitting tips for the best support.
Body Surface Area Calculator
Calculate body surface area (BSA) in m² using the Mosteller and DuBois formulas from height and weight. Used for drug dosing, burn treatment, and cardiology.
Body Type Calculator
Determine your body type (apple, pear, hourglass, rectangle, or inverted triangle) from waist, hip, bust, and shoulder measurements. Includes waist-to-hip ratio health analysis.
Due Date Calculator
Calculate your pregnancy due date from last period, conception date or IVF transfer. Shows trimester dates, week-by-week milestones and days remaining. Free due date calculator.
Ovulation Calculator
Calculate your ovulation date and fertile window based on your cycle length. Shows peak fertility days, current cycle phase and next 3 fertile windows. Free ovulation calculator.
Period Calculator
Predict your next period date and see a 6-month period forecast with ovulation and fertile window dates. Enter last period and cycle length. Free menstrual cycle calculator.
Pregnancy Weight Gain
Calculate healthy pregnancy weight gain based on pre-pregnancy BMI. Shows recommended total gain, trimester targets and where the weight goes. Based on IOM guidelines. Free calculator.
Water Intake Calculator
Calculate how much water you should drink daily based on weight, activity level, climate and pregnancy status. Shows daily target in litres, glasses and oz with a hydration schedule.
Blood Pressure Checker
Enter your blood pressure reading to see your category, risk level and recommended action. Based on 2017 AHA/ACC guidelines. Includes full classification chart and MAP calculation.
About Our Fitness & Health
CalcProTool's fitness & health are designed for users in the USA, UK, Canada, Australia, and Europe. Every calculator uses verified formulas, updates in real time, and requires no registration. All 36 tools in this category are completely free.
Each calculator page includes a full explanation of the formula used, step-by-step guidance, and answers to frequently asked questions. Our tools are designed to help you make informed decisions with confidence.