🔢 Decimal Feet Converter
Convert Between Decimal Feet & Feet+Inches Format
🔢 Decimal Format
5.5 feet = 5 feet + 0.5 × 12 inches
Used in engineering, CAD, and calculations
📐 Feet+Inches Format
5' 6" is traditional architectural notation
Used in construction and blueprints
🔄 Conversion
Decimal × 12 = total inches
Then divide by 12 for feet remainder
Choose Conversion Mode:
🔢 Decimal Feet → Feet + Inches
📐 Feet + Inches → Decimal Feet
🔢 Fractional Inches Converter
📋 Quick Reference Tables
Decimal Feet to Feet+Inches
Decimal Feet | Feet + Inches |
---|---|
5.0 ft | 5' 0" |
5.25 ft | 5' 3" |
5.5 ft | 5' 6" |
5.75 ft | 5' 9" |
6.0 ft | 6' 0" |
6.5 ft | 6' 6" |
Decimal Inch Equivalents
Inches | Decimal Feet |
---|---|
1" | 0.0833 ft |
3" | 0.25 ft |
6" | 0.5 ft |
9" | 0.75 ft |
12" | 1.0 ft |
📐 When to Use Each Format
🔢 Use Decimal Feet For:
- Engineering calculations
- CAD software input
- Mathematical formulas
- Area and volume calculations
- Scientific measurements
- Computer programming
📏 Use Feet+Inches For:
- Construction blueprints
- Architectural drawings
- Carpentry and woodworking
- Measuring tape readings
- Traditional building trades
- Human height measurements
🌟 Practical Examples
👤 Human Height
5' 10" = 5.833 ft
6' 2" = 6.167 ft
5' 6" = 5.5 ft
🚪 Door Sizes
6' 8" = 6.667 ft
7' 0" = 7.0 ft
Standard door heights
🏠 Room Dimensions
12' 6" = 12.5 ft
15' 9" = 15.75 ft
Typical room measurements
🧮 Conversion Formulas
Decimal to Feet+Inches
1. Whole number = feet
2. Decimal part × 12 = inches
Example:
5.75 feet
Feet = 5
Inches = 0.75 × 12 = 9
Result: 5' 9"
Feet+Inches to Decimal
decimal = feet + (inches ÷ 12)
Example:
5' 9"
= 5 + (9 ÷ 12)
= 5 + 0.75
= 5.75 feet
How to convert feet to feet+inches
1 inch is equal to 1/12 feet:
1″ = 1/12ft = 0.083333ft
The integer distance d in feet (ft) is equal to the floor integer value distance d in feet (ft):
dint(ft) = ⌊d(ft)⌋
The additional distance d in inches (″) is equal to 12 times the whole distance d in inches (″) minus the integer disatance d in feet (ft):
d(″) = 12×(d(ft) – dint(ft))
Example
Convert 3.75 feet to feet+inches:
d(ft) = ⌊3.75ft⌋ = 3ft
d(″) = 12×(3.75ft-3ft) = 9″
Inches to feet conversion table
Inches (“) | Feet (ft) |
---|---|
0.01 ″ | 0.000833333 ft |
1/64 ″ | 0.001302083 ft |
1/32 ″ | 0.002604167 ft |
1/16 ″ | 0.005208333 ft |
0.1 ″ | 0.008333333 ft |
1/8 ″ | 0.010416667 ft |
1/4 ″ | 0.020833333 ft |
1/2 ″ | 0.041666667 ft |
1 ″ | 0.0833 ft |
2 ″ | 0.1667 ft |
3 ″ | 0.2500 ft |
4 ″ | 0.3333 ft |
5 ″ | 0.4167 ft |
6 ″ | 0.5000 ft |
7 ″ | 0.5833 ft |
8 ″ | 0.6667 ft |
9 ″ | 0.7500 ft |
10 ″ | 0.8333 ft |
20 ″ | 1.6667 ft |
30 ″ | 2.5000 ft |
40 ″ | 3.3333 ft |
50 ″ | 4.1667 ft |
60 ″ | 5.0000 ft |
70 ″ | 5.8333 ft |
80 ″ | 6.6667 ft |
90 ″ | 7.5000 ft |
100 ″ | 8.3333 ft |
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