C
CalcRiver

Health & Fitness

Track your body metrics, nutrition goals, and metabolic health.

💧
Popular

Dew Point Calculator

Calculate dew point temperature and comfort level from relative humidity and air temperature.

❄️
Popular

Wind Chill Calculator

Calculate the "feels like" temperature and frostbite risk based on wind speed and air temperature.

🌡️
Popular

Heat Index Calculator

Calculate what the temperature really feels like based on relative humidity. Uses NOAA formulas.

⚖️
Popular

Weight Calculator

Convert between weight units like Kilograms (kg), Pounds (lbs), Stones (st), and Ounces. Instant conversion for health and cooking.

👙
Popular

Bra Size Calculator

Find your perfect bra fit. Calculate US, UK, and EU sizes based on your band and bust measurements.

💤
Popular

Sleep Calculator

Calculate the best times to go to bed or wake up based on 90-minute sleep cycles.

💧
Popular

Water Intake Calculator

Calculate daily water intake needs based on weight and activity.

⚖️
Popular

BMI Calculator

Check your Body Mass Index.

📏
Popular

Height Calculator

Predict a child's future adult height.

💪
Popular

Lean Body Mass

Calculate LBM using Boer, James, and Hume formulas.

👗
Popular

Body Type Calculator

Determine your body shape (Hourglass, Pear, Apple) based on measurements.

🎖️
Popular

Army Body Fat Calculator

Calculate body fat percentage based on US Army standards (AR 600-9).

📏
Popular

Body Fat Calculator

Estimate body fat percentage.

🍎
Popular

WW Points Calculator

Calculate SmartPoints, PointsPlus, and Classic points for food.

🍷
Popular

BAC Calculator

Estimate Blood Alcohol Content and time to sober.

📅
Popular

Due Date Calculator

Calculate your baby due date based on last period, conception, or IVF.

⚖️
Popular

Ideal Weight Calculator

Find your IBW using Devine, Hamwi & Robinson formulas.

⚖️

Overweight Calculator

Calculate excess weight and BMI category.

🩺

Anorexic BMI Calculator

Screen for underweight and anorexia risks.

🧍

BSA Calculator

Calculate Body Surface Area.

🎯

Healthy Weight

Find your ideal weight range.

🔥
Popular

TDEE Calculator

Calculate Total Daily Energy Expenditure.

🥩
Popular

Protein Calculator

Calculate daily protein needs for muscle & fat loss.

🥑
Popular

Fat Intake Calculator

Calculate daily fat grams for Keto, Low Carb, or balanced diets.

🩺
Popular

GFR Calculator

Estimate Glomerular Filtration Rate (eGFR).

🏋️
Popular

One Rep Max

Calculate 1RM strength limit.

❤️
Popular

Target Heart Rate

Find your HR zones for fat burn and cardio training.

📅

Conception Calculator

Calculate likely conception date.

🌸
Popular

Ovulation Calculator

Track your most fertile days and predict your next period.

🩸
Popular

Period Calculator

Predict your next menstrual cycle and period dates.

👶

Pregnancy Conception

Find out when you likely conceived.

🤰

Pregnancy Weight Gain

Track healthy weight gain ranges by week.

🍞

Carbohydrate Calculator

Calculate daily carbs for Keto, Low Carb, or balanced diets.

⏱️
Popular

Pace Calculator

Calculate running pace, time, or distance.

👶
Popular

Pregnancy Calculator

Calculate due date & weeks pregnant.

Popular

Intermittent Fasting

Plan fasting windows and daily calories (16:8, OMAD).

🍳
Popular

Recipe Calculator

Calculate calories per serving for homemade meals.

👣
Popular

Steps to Calories

Convert walking steps to calories burned.

🏃
Popular

Calories Burned

Calculate energy burned by activity.

📉
Popular

Weight Loss Calculator

Calculate calorie deficit for fat loss.

💪
Popular

Weight Gain Calculator

Calculate calorie surplus for muscle building (bulking).

🥗
Popular

Macro Calculator

Calculate optimal protein, carbs, and fats.

🔥
Popular

Basal Metabolic Rate

BMR & daily calorie needs.

🥑

Maintenance Calories

Daily calorie needs.

☢️
Popular

Half-Life Calculator

Calculate radioactive or drug half-life decay.