Free Online Calculators

Calculate your exact age in years, months, and days. Find out how old you are or will be on any date.

Calculate acceleration, velocity change, or time using a=Δv/t. Perfect for kinematics and motion problems.

Calculates the number of full-time equivalent employees based on total hours worked during a specific period.

Calculates the volume of a cone using its radius and height.

Estimates a child's waist-to-height ratio using waist circumference and height entered in the same unit.

Calculates the child waist-to-height ratio using waist circumference and height measurements.