By Tim King · Updated 7 October 2026

Inches to Feet Converter

70, 80 Inches in Feet and Inches

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inches to feet formula

feet = inches ÷ 12

1 inch = 0.0833333333 feet, so multiply inches by 0.0833333333. Going the other way, 1 foot = 12 inches.

inches to feet table

inches (in)	feet (ft)
1	0.0833333
2	0.166667
3	0.25
6	0.5
9	0.75
12	1
18	1.5
24	2
30	2.5
36	3
40	3.33333
48	4
50	4.16667
54	4.5
60	5
64	5.33333
66	5.5
70	5.83333
72	6
80	6.66667
84	7
96	8
100	8.33333
120	10
144	12

How many feet in inches?

12 in = 1 ft. There are 1 feet in 12 inches.

24 in = 2 ft. There are 2 feet in 24 inches.

36 in = 3 ft. There are 3 feet in 36 inches.

60 in = 5 ft. There are 5 feet in 60 inches.

100 in = 8.33333 ft. There are 8.33333 feet in 100 inches.

feet to inches formula

inches = feet × 12

1 foot = 12 inches, so multiply feet by 12, or divide by 0.0833333333.

feet to inches table

feet (ft)	inches (in)
0.5	6
1	12
1.5	18
2	24
2.5	30
3	36
4	48
4.5	54
5	60
5.5	66
6	72
6.5	78
7	84
8	96
9	108
10	120
12	144
15	180
20	240
25	300
50	600
100	1,200

How many inches in feet?

1 ft = 12 in. There are 12 inches in 1 feet.

3 ft = 36 in. There are 36 inches in 3 feet.

5 ft = 60 in. There are 60 inches in 5 feet.

6 ft = 72 in. There are 72 inches in 6 feet.

10 ft = 120 in. There are 120 inches in 10 feet.

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How the Inches To Feet works

This inches to feet converter divides by 12 as you type, because there are exactly 12 inches in a foot: 70 inches is 5.83 feet, or 5 ft 10 in, and 80 inches is 6.67 feet, or 6 ft 8 in. The explainer shows how to turn the decimal into feet and inches, which is how heights, TV sizes and timber are usually quoted. Press the swap button to turn feet into inches, where you can type 5'10" directly.

Inches and feet are both imperial units, but they still cause arithmetic errors because the system is base 12 rather than base 10. A figure such as 5.5 feet looks like 5 feet 5 inches and is actually 5 feet 6 inches. Converting carefully matters for heights, room and furniture measurements, picture frames and anything cut from a board.

Inches to feet: the rule

One foot is exactly 12 inches. Both units have been tied to the metre since 1959: an inch is 2.54 cm and a foot is 30.48 cm, so the ratio of 12 is exact.

The formula

feet = inches ÷ 12, and inches = feet × 12. To give the answer in feet and inches, the whole number of feet is the quotient and the remainder is the inches: 70 ÷ 12 = 5 remainder 10, so 70 inches is 5 feet 10 inches.

Worked examples

The first example is a child's height of 50 inches. 50 ÷ 12 = 4.1667 feet. The remainder of 50 − 48 = 2 inches gives 4 feet 2 inches.

The second example goes the other way. A door that is 6 feet 8 inches tall, a common US interior door height, is 6 × 12 + 8 = 80 inches. In the swap direction, type 6'8" and the converter returns 80 in.

A third example: a 65-inch television is measured on the diagonal, so 65 ÷ 12 = 5.42 feet, or 5 feet 5 inches corner to corner. The screen itself is about 4 feet 9 inches wide.

How many inches in a foot, and how many feet in common lengths

There are 12 inches in a foot, 36 inches in a yard and 63,360 inches in a mile. The table turns common inch figures into decimal feet and into feet and inches.

Common lengths in inches with decimal feet and feet and inches

Inches	Feet (decimal)	Feet and inches
6	0.5	0'6"
12	1	1'0"
18	1.5	1'6"
24	2	2'0"
30	2.5	2'6"
32	2.667	2'8"
36	3	3'0"
42	3.5	3'6"
48	4	4'0"
54	4.5	4'6"
55	4.583	4'7"
60	5	5'0"
62	5.167	5'2"
64	5.333	5'4"
65	5.417	5'5"
66	5.5	5'6"
68	5.667	5'8"
70	5.833	5'10"
72	6	6'0"
75	6.25	6'3"
80	6.667	6'8"
84	7	7'0"
96	8	8'0"
120	10	10'0"

How to read the result

in equals gives the length in decimal feet, for example 70 in equals 5.8333 ft.
Conversion shows the factor, 1 in = 0.0833 ft. After a swap it reads 1 ft = 12 in.
Inverse gives the factor for the opposite direction.

To get feet and inches from the decimal, keep the whole number and multiply the fraction by 12: 0.8333 × 12 = 10, so 5.8333 ft is 5'10".

Tips and pitfalls

Decimal feet are not feet and inches. 5.10 ft is 5 feet 1.2 inches, not 5'10". Builders' tapes in the US sometimes show decimal feet for surveying, which adds to the confusion.
Use the prime marks. One prime (') means feet and a double prime (") means inches. On a keyboard the straight apostrophe and quotation mark are fine.
Fractions of an inch. US tape measures divide inches into sixteenths. 3/8 inch is 0.375 inch, and 0.375 ÷ 12 is 0.03125 foot.
Metric is simpler for cutting lists. For materials sold in metric lengths, use the cm to inches converter or feet to cm.

Sources: NIST unit conversion.

Checked against: 70 in = 5 ft 10 in

FAQ

How many inches are in a foot?

Exactly 12 inches. Three feet make a yard of 36 inches, and 5,280 feet make a mile, which is 63,360 inches. The ratio has been exact since 1959.

How many feet is 60 inches?

It is 5 feet exactly, because 60 ÷ 12 = 5. It is about 152.4 cm, a common minimum height for fairground and theme park rides.

How do I convert inches to feet and inches?

Divide by 12. The whole number is the feet and the remainder is the inches. For example, 67 ÷ 12 is 5 remainder 7, so 67 inches is 5 feet 7 inches, written 5'7".

How many inches is 5 feet 10 inches?

70 inches. Multiply the 5 feet by 12 to get 60 inches, then add the 10 inches. In the converter, swap to feet and type 5'10" to get the same answer.

Why is 5.5 feet not 5 feet 5 inches?

Because a foot has 12 inches, not 10. Half a foot is 6 inches, so 5.5 feet is 5 feet 6 inches. Multiply the decimal part by 12 to get the inches.