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Converting Feet/Inches/Fractions to Decimal Format

Lot's of numbers to deal with, and no, not very useful for picking lottery numbers. But if you understand the basic concepts it does take the gamble out of converting these numbers and you are sure to be a winner.

Inch Decimal Value of a Foot
1 inch 0.0833
2 inches 0.167
3 inches 0.25
4 inches 0.333
5 inches 0.417
6 inches 0.5
7 inches 0.583
8 inches 0.667
9 inches 0.75
10 inches 0.833
11 inches 0.917
12 inches 1
Fraction Decimal Value of an Inch
1/16 0.0625
1/8 0.125
3/16 0.1875
1/4 0.25
5/16 0.3125
3/8 0.375
7/16 0.4375
1/2 0.5
9.16 0.5625
5/8 0.625
11/16 0.6875
3/4 0.75
13/16 0.8125
7/8 0.875
15/16 0.9375
Example
Converting 7'- 4 3/4" to a decimal value.
If you are like me, I would say the 7' stays a 7' for now.
I look at the charts 4" = 0.333 3/4" = 0.75
0.333 + 0.75 = 1.083" + 7" = 8.083
and I would write the whole thing as 8.083 in decimal format.

Of course you can't add a decimal value of a foot to a decimal value of an inch without converting the fraction's decimal inch value to a decimal foot value.

Try again:



Converting 7'- 4 3/4" to a decimal value.
7' stays a 7' for now.
4" = 0.333 (converting to decimal foot value by dividing by 12)
3/4" = 0.75 (converting fraction to decimal by dividing numerator by denominator) / 12 (converting to decimal foot value by dividing by 12) = 0.0625
0.333 + 0.0625 = 0.3955 + 7'= 7.3955
Writing 7'- 4 3/4" in decimal value = 7.3955

1/16 0.0625 0.005208
1/8 0.125 0.001042
3/16 0.1875 0.015625
1/4 0.25 0.020883
5/16 0.3125 0.026004
3/8 0.375 0.03125
7/16 0.4375 0.036458
1/2 0.5 0.041666
9.16 0.5625 0.046875
5/8 0.625 0.05208
11/16 0.6875 0.057291
3/4 0.75 0.0625
13/16 0.8125 0.0677
7/8 0.875 0.72916
15/16 0.9375 0.078125
1 inch 12/12 1 0.0833
2 inches 24/12 2 0.167
3 inches 36/12 3 0.25
4 inches 48/12 4 0.333
5 inches 60/12 5 0.417
6 inches 72/12 6 0.5
7 inches 84/12 7 0.583
8 inches 96/12 8 0.667
9 inches 108/12 9 0.75
10 inches 120/12 10 0.833
11 inches 132/12 11 0.917
12 inches 144/12 12 1
Converting inches to decimal
Divide the number of inches by 12
Example:
2" / 12 = 0.16667
5" / 12 = 0.41667

Converting inches plus fraction to decimal
Change the inch into a fraction using the same denominator as the fraction, add the fraction to this amount and divide numerator by the denominator.
2 1/4"
8/4 + 1/4= 9/4"
9/4 = 2.25"

3 11/16"
48/16 + 11/16= 59/16"
59/16 = 3.6875"


Check out our Calculator for converting Feet/Inches/Fractions to Decimal Format


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