Health Calculators

Calculate your Fat-Free Mass Index to measure muscle potential.

Calculate body fat percentage using US Army standards.

Calculate your score for the new Army Combat Fitness Test.

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

Estimate renal function using the Cockcroft-Gault equation.

Calculate corrected calcium levels based on albumin.

Calculate how long a substance remains in the body.

Estimate the likelihood of a positive EtG alcohol test.

Predict a child's future adult height based on genetics.

Calculate calories and macros for your custom Chipotle order.

Find the nutrition facts for your favorite Starbucks drinks.

Calculate the alcohol percentage for homebrewing beer or wine.

Convert your dog's age to human years.

Estimate how big your puppy will get as an adult.

Check if your dog is at a healthy weight.

Use this pregnancy due date calculator to calculate your due date by last period (LMP), conception date, or reverse (estimate conception from due date).

Use this IVF due date calculator to calculate due date from IVF using your embryo transfer date (3-day or 5-day). Works as an IVF transfer due date calculator and can also be used for FET (frozen embryo transfer).

Use this free period calculator to predict your next period date, ovulation day, and fertile window based on your last menstrual period and cycle length.

Use this free gestational age calculator to find out how many weeks and days pregnant you are based on your last period (LMP), due date (EDD), or ultrasound measurements like CRL or gestational sac size.