# Square Feet to Square Inches Conversion

Enter the area in square feet below to get the value converted to square inches.

**Results in Square Inches:**

## How to Convert Square Feet to Square Inches

To convert a square foot measurement to a square inch measurement, multiply the area by the conversion ratio. One square foot is equal to 144 square inches, so use this simple formula to convert:

The area in square inches is equal to the square feet multiplied by 144.

**For example,**here's how to convert 5 square feet to square inches using the formula above.

Square feet and square inches are both units used to measure area. Keep reading to learn more about each unit of measure.

## Square Feet

One square foot is equal to the area of a square with sides that are 1 foot in length.^{[1]} One square foot is roughly equivalent to 144 square inches.

The square foot is a US customary and imperial unit of area. A square foot is sometimes also referred to as a square ft. Square feet can be abbreviated as *sq ft*, and are also sometimes abbreviated as *ft²*. For example, 1 square foot can be written as 1 sq ft or 1 ft².

Try our square footage calculator to calculate the area of a space.

## Square Inches

One square inch is equal to the area of a square with sides that are 1 inch in length.

The square inch is a US customary and imperial unit of area. A square inch is sometimes also referred to as a square in. Square inches can be abbreviated as *sq in*, and are also sometimes abbreviated as *in²*. For example, 1 square inch can be written as 1 sq in or 1 in².

## Square Foot to Square Inch Conversion Table

Square Feet | Square Inches |
---|---|

1 sq ft | 144 sq in |

2 sq ft | 288 sq in |

3 sq ft | 432 sq in |

4 sq ft | 576 sq in |

5 sq ft | 720 sq in |

6 sq ft | 864 sq in |

7 sq ft | 1,008 sq in |

8 sq ft | 1,152 sq in |

9 sq ft | 1,296 sq in |

10 sq ft | 1,440 sq in |

11 sq ft | 1,584 sq in |

12 sq ft | 1,728 sq in |

13 sq ft | 1,872 sq in |

14 sq ft | 2,016 sq in |

15 sq ft | 2,160 sq in |

16 sq ft | 2,304 sq in |

17 sq ft | 2,448 sq in |

18 sq ft | 2,592 sq in |

19 sq ft | 2,736 sq in |

20 sq ft | 2,880 sq in |

21 sq ft | 3,024 sq in |

22 sq ft | 3,168 sq in |

23 sq ft | 3,312 sq in |

24 sq ft | 3,456 sq in |

25 sq ft | 3,600 sq in |

26 sq ft | 3,744 sq in |

27 sq ft | 3,888 sq in |

28 sq ft | 4,032 sq in |

29 sq ft | 4,176 sq in |

30 sq ft | 4,320 sq in |

31 sq ft | 4,464 sq in |

32 sq ft | 4,608 sq in |

33 sq ft | 4,752 sq in |

34 sq ft | 4,896 sq in |

35 sq ft | 5,040 sq in |

36 sq ft | 5,184 sq in |

37 sq ft | 5,328 sq in |

38 sq ft | 5,472 sq in |

39 sq ft | 5,616 sq in |

40 sq ft | 5,760 sq in |

## References

- Merriam-Webster, square foot, https://www.merriam-webster.com/dictionary/square%20foot