The formula
inches = decimal part × 12
sixteenths = decimal part of the inches × 16
Decimal feet to inches chart
| Decimal ft | Inches | Decimal ft | Inches |
|---|---|---|---|
| 0.05 ft | 0 5/8" | 0.55 ft | 6 5/8" |
| 0.10 ft | 1 3/16" | 0.60 ft | 7 3/16" |
| 0.15 ft | 1 13/16" | 0.65 ft | 7 13/16" |
| 0.20 ft | 2 3/8" | 0.70 ft | 8 3/8" |
| 0.25 ft | 3" | 0.75 ft | 9" |
| 0.30 ft | 3 5/8" | 0.80 ft | 9 5/8" |
| 0.35 ft | 4 3/16" | 0.85 ft | 10 3/16" |
| 0.40 ft | 4 13/16" | 0.90 ft | 10 13/16" |
| 0.45 ft | 5 3/8" | 0.95 ft | 11 3/8" |
| 0.50 ft | 6" | 1.00 ft | 1' 0" |
Inches are rounded to the nearest 1/16". The whole feet stay the same: 7.55 ft is 7 feet plus the inches shown for 0.55 ft.
Questions
How do you convert decimal feet to feet and inches?
Keep the whole number as feet. Multiply the decimal part by 12 to get inches, then multiply any remaining decimal of an inch by 16 to get sixteenths. 12.375 ft: 0.375 × 12 = 4.5 inches, and 0.5" is 8/16" = 1/2", so 12' 4 1/2".
Why do plans use decimal feet?
Surveyors and civil engineers work in decimal feet because it is easy to add and multiply. Builders then convert to feet, inches and fractions to measure with a tape.
What is 0.1 ft in inches?
1.2 inches, which is about 1 3/16".