▬ Calculators

Rectangle Area Calculator

Calculate the area of a rectangle from its base and height. Formula: A = b × h. Instant result.

Base (b)

Height (h)

m²

Formula

A = b × h

Convert Arabic numbers to Roman numerals and vice versa. Supports values from 1 to 3999. Instant bidirectional conversion.

Calculate the Greatest Common Divisor (GCD) of two or more numbers using the Euclidean algorithm. Instant result.

Calculate the Least Common Multiple (LCM) of two or more numbers. Instant result in the browser.