## Unit Converter

## Conversion formula

The conversion factor from feet to inches is 12, which means that 1 foot is equal to 12 inches:

1 ft = 12 in

To convert 21 feet into inches we have to multiply 21 by the conversion factor in order to get the length amount from feet to inches. We can also form a simple proportion to calculate the result:

1 ft → 12 in

21 ft → L_{(in)}

Solve the above proportion to obtain the length *L* in inches:

L_{(in)} = 21 ft × 12 in

L_{(in)} = 252 in

The final result is:

21 ft → 252 in

We conclude that **21 feet is equivalent to 252 inches**:

21 feet = 252 inches

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case **1 inch is equal to 0.003968253968254 × 21 feet**.

Another way is saying that *21 feet is equal to 1 ÷ 0.003968253968254 inches*.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that **twenty-one feet is approximately two hundred fifty-two inches**:

21 ft ≅ 252 in

An alternative is also that *one inch is approximately zero point zero zero four times twenty-one feet*.

## Conversion table

### feet to inches chart

For quick reference purposes, below is the conversion table you can use to convert from feet to inches

feet (ft) | inches (in) |
---|---|

22 feet | 264 inches |

23 feet | 276 inches |

24 feet | 288 inches |

25 feet | 300 inches |

26 feet | 312 inches |

27 feet | 324 inches |

28 feet | 336 inches |

29 feet | 348 inches |

30 feet | 360 inches |

31 feet | 372 inches |