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Steps Involved in Building a House

Converting Feet/Inches/Fractions to Decimal Format

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 and add the fraction to this amount and divide by 12
2 1/4"
24/12 + 1/4=


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