Number Tools

Convert fractions to decimals and vice versa

Convert improper fractions to mixed numbers

Calculate the absolute difference between two numbers

Calculate percentage increase or decrease

Calculate displacement using average velocity and time in physics problems

Solve missing values in simple proportions

Convert degrees ↔ radians ↔ gradians

Add or subtract hours, minutes, and seconds

Find number of days between two dates

Calculate exact age in years, months, days from DOB

Compute days/hours/minutes until a future date

Compute body mass index from height and weight

Compute area/perimeter for circles, squares, rectangles, triangles

Convert hours to minutes with simple and accurate time calculations

Compute volume for cubes, spheres, cylinders, cones

Find missing side of right triangle

Solve ax²+bx+c=0 using quadratic formula

Compute simple interest: P × R × T / 100

Calculate compound interest growth

Basic amortization without external data

Arithmetic or geometric sequence generator

Compute harmonic mean for a dataset

Compute geometric mean for a dataset