Convert Square Inches (in²) to Square Centimetres (cm²) | in² in cm²

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# Let's convert Square Inches (in²) to Square Centimetres (cm²)

This quick and easy calculator will convert Square Inches (in²) to Square Centimetres (cm²) and show formula, brief history on the units and quick maths for the conversion.

## Quick Reference for Converting Square Inches to Square Centimetres

Formula
cm² = in² x 6.45
Quick Rough Maths
To get the Square Centimetres, multiply the number of Square Inches by 6.5
Square Inches (in²) in 1 Square Centimetre
There are 0.16 Square Inches in 1 Square Centimetre
Square Centimetres (cm²) in 1 Square Inch
There are 6.45 Square Centimetres in 1 Square Inch

## Unit Information

Square Inch
/skwɛːˌɪn(t)ʃ/
Symbol: in²
Unit System: Imperial

### What is the Square Inch?

The square inch is a unit of area and is an imperial unit with the symbol in².

One square inch is equal in area to a square with edges one inch in length.

The square inch is a common unit of measurement in the UK and US.

Square Centimetre
/skwɛːˌˈsɛntɪmiːtə/
Symbol: cm²
Unit System: SI

### What is the Square Centimetre?

The square centimetre is a unit of area and is a multiple of the square metre; an SI derived unit. It has the symbol cm².

A square centimetre is equal to the area of a square with edges 1cm long. There are 10,000 square centimetres in a square metre.

It is often used to describe areas smaller than 1m² - including much work in classrooms on paper.

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