Decimal feet or inches?

You can enter decimal values (e.g. 5.5 ft or 6.5 in) for precision.

Online Height Feet and Inches to CM

Convert height from feet and inches to centimeters. Enter ft and in, get cm. Client-side only.

Feet and inches

What is the formula?: 1 in = 2.54 cm, 12 in = 1 ft. Total cm = (feet × 12 + inches) × 2.54.
Example?: 5 ft 7 in = (5×12 + 7) × 2.54 = 67 × 2.54 ≈ 170 cm.
Decimal feet or inches?: You can enter decimal values (e.g. 5.5 ft or 6.5 in) for precision.

Celsius to Fahrenheit Converter

Convert Celsius to Fahrenheit and Fahrenheit to Celsius instantly. Free temperature converter.

Tip Calculator

Calculate tip and split the bill. Enter bill amount, tip percentage, and number of people.

Roman Numeral Converter

Convert numbers to Roman numerals and Roman numerals to numbers. Supports 1–3999.

Combinations Calculator

Calculate C(n,r) — the number of ways to choose r items from n without order. Uses n!/(r!(n-r)!).

Combinations with Replacement Calculator

Calculate the number of ways to choose r items from n with repetition allowed. Formula: C(n+r-1, r).

Even Permutations Calculator

Count how many permutations of n objects are even (expressible as an even number of swaps). For n ≥ 2, equals n!/2.