Calculator options
Formula used
Separate the whole feet first. Multiply the decimal remainder by twelve. Then round inches using your chosen method.
| Decimal feet to inches | Remaining inches = decimal remainder × 12 |
|---|---|
| Total inches | Total inches = decimal feet × 12 |
| Reverse conversion | Decimal feet = feet + inches ÷ 12 |
| Metric conversion | Centimetres = decimal feet × 30.48 |
How to use this calculator
- Select the required conversion direction.
- Choose single or batch input mode.
- Enter your measurement values carefully.
- Select precision and rounding settings.
- Choose the nearest fractional inch.
- Enable metric values when needed.
- Press Calculate to view detailed results.
- Copy, print, or export your results.
Worked examples
| Decimal feet | Feet and inches | Fractional result | Total inches |
|---|---|---|---|
| 3.25 | 3′ 3″ | 3 ft 3 in | 39 |
| 5.5 | 5′ 6″ | 5 ft 6 in | 66 |
| 7.625 | 7′ 7.5″ | 7 ft 7 1/2 in | 91.5 |
| 10.3333 | 10′ 4″ | 10 ft 4 in | 123.9996 |
| -2.75 | -2′ 9″ | -2 ft 9 in | -33 |
Common decimal foot fractions
| Decimal foot | Inches | Fraction of foot |
|---|---|---|
| 0.0625 | 0.75 | 1/16 |
| 0.125 | 1.5 | 1/8 |
| 0.25 | 3 | 1/4 |
| 0.375 | 4.5 | 3/8 |
| 0.5 | 6 | 1/2 |
| 0.625 | 7.5 | 5/8 |
| 0.75 | 9 | 3/4 |
| 0.875 | 10.5 | 7/8 |
Measurement notes
Decimal feet are common in surveying. Fractional inches appear often in construction. Always match rounding precision to project tolerances.
Negative values can represent directions. This calculator keeps their sign visible. Confirm workplace conventions before reporting final measurements.
Frequently asked questions
How do I convert decimal feet?
Keep the whole feet unchanged. Multiply the remaining decimal by twelve. The product gives the remaining inches.
What does 0.5 foot equal?
One half foot equals six inches. Multiply 0.5 by twelve. The answer is exactly six inches.
Can this calculator show fractions?
Yes, it rounds fractional inches automatically. Choose your preferred denominator first. Simplified fractions appear in the result.
Does it support negative values?
Yes, negative decimal feet are supported. The result preserves the negative sign. This helps with directional measurements.
What happens when inches round to twelve?
The calculator carries twelve inches forward. One extra foot is added. Remaining inches then become zero.
Can I convert many values together?
Yes, use the batch input mode. Separate values with commas or lines. Up to 250 values are processed.
How accurate are the results?
Results use standard floating-point calculations. Precision controls determine displayed rounding. Exact values remain visible when useful.
Can I reverse the conversion?
Yes, select feet and inches conversion. Enter whole, decimal, or fractional inches. The result returns decimal feet.
Why show total inches?
Total inches simplify material comparisons. They also help with quick calculations. Multiply decimal feet by twelve directly.
Can I export the results?
Yes, copy and CSV are available. PDF export uses your browser print system. Batch tables export cleanly too.
Which fraction setting should I use?
Use project specifications as guidance. Carpentry often uses sixteenths or thirty-seconds. Rough estimates may use quarters instead.