Calculators

Calculates the Mentzer Index to help differentiate between iron deficiency anemia and thalassemia trait.

Calculates the ratio of Blood Urea Nitrogen (BUN) to Creatinine, which can indicate kidney issues or dehydration.

Calculates and analyzes the cash flow of a business, including operating, investing, and financing activities.

Calculates the churn rate, which is the percentage of customers who have stopped using a company's product or service during a specific period.

Converts between milligrams (mg) and milliliters (mL) using the density of a substance. This calculator is useful for converting between mass and volume when the density is known.

Predicts the likely days of ovulation based on the first day of your last menstrual period and the length of your typical menstrual cycle. This calculator provides an estimate and should not be used as a method of birth control.

Generates numeric or symbolic Linux file permission codes based on user/group/other read/write/execute settings.

Calculates the appropriate DIN (Deutsches Institut für Normung) release setting for ski bindings based on skier weight, height, age, boot sole length, and skiing ability.

Estimates calories burned while jumping rope based on weight, duration, and intensity.

Converts distances between light-years and other units, such as kilometers, miles, astronomical units, and parsecs.