Math & Science

Solve any percentage problem instantly — find percentages, percentage change, and reverse percentages.

A clean, fast standard calculator for everyday arithmetic — addition, subtraction, multiplication, and division.

Full-featured scientific calculator with trigonometry, logarithms, exponents, and more.

Calculate your semester GPA or cumulative GPA based on your course grades and credit hours.

Calculate your final grade based on assignment weights, or find what score you need on your final exam.

Calculate the area of any shape — circle, rectangle, triangle, trapezoid, ellipse, and more.

Convert numbers between binary (base-2), decimal (base-10), hexadecimal (base-16), and octal (base-8).

Convert between Arabic numerals and Roman numerals instantly. Works for numbers 1 to 3,999.