Basic Calculator

A basic calculator performs the four fundamental arithmetic operations: addition (+), subtraction (−), multiplication (×), and division (÷). Order of operations (BODMAS/PEMDAS) determines calculation sequence when multiple operations appear: Brackets, Orders, Division/Multiplication, Addition/Subtraction

The calculator uses the standard published formula for basic. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Addition: combining two quantities — commutative (a+b = b+a). Each step in the calculation is shown so you can verify the result manually.