Calculators

Calculates the relative risk, comparing the probability of an outcome in an exposed group to the probability in an unexposed group.

Converts a number of steps into an approximate distance in miles.

This calculator applies Newton's Second Law (F=ma) to find force, mass, or acceleration. You can input any two values to calculate the third.

Calculates trajectory parameters (range, height, time of flight, velocity) for an object launched at an angle.

Calculates the sum of two or more vectors. Enter the x and y components of each vector, and the calculator will determine the resultant vector.

Finds the non-negative magnitude of a number (distance from zero).

This calculator uses the PHQ-2 and PHQ-9 questionnaires to screen for depression symptoms and assess their severity. The PHQ-2 is a quick screening tool, while the PHQ-9 provides a more detailed assessment.

Estimates a child's potential adult height based on parental heights.

Compares a child's or teen's BMI to others of the same age and gender.

Calculates recommended daily intake of macronutrients (protein, carbs, and fat) based on calorie goals and activity level.