Inches to Fraction Calculator
Convert decimal inches to fractional inches with customizable precision
Convert to Fractional Inches
Example: 11.81" = 11 13/16"
Higher precision = smaller fraction increments
Fraction Conversion Results
Example Conversions
Common Decimal to Fraction Examples
0.5": 1/2"
0.25": 1/4"
0.75": 3/4"
0.125": 1/8"
0.375": 3/8"
0.625": 5/8"
0.875": 7/8"
0.0625": 1/16"
Metric to Fraction Examples
7 mm: 9/32" (0.2756")
12 mm: 15/32" (0.4724")
25.4 mm: 1" exactly
1 cm: 25/64" (0.3937")
2.54 cm: 1" exactly
5 cm: 1 31/32" (1.9685")
Common Fractions
Precision Guide
Precision machining, detailed measurements
General construction, woodworking
Standard measurements, everyday use
Rough measurements, quick estimates
Conversion Tips
Use 1/64" for precise measurements
1/16" is sufficient for most construction
Always simplify fractions when possible
Round to nearest fraction for practical use
Understanding Fractional Inches
Why Use Fractional Inches?
Fractional inches are essential in construction, woodworking, machining, and crafts. They provide precise measurements that are easy to mark and measure with standard rulers and measuring tapes. Most measurement tools use fractional markings.
Conversion Process
- Take the decimal part of inches
- Multiply by precision denominator (2, 4, 8, 16, 32, 64)
- Round to nearest whole number (numerator)
- Simplify the fraction by dividing by GCD
- Express as mixed number if needed
Step-by-Step Example
Convert 11.81" to Fraction
1. Whole part: 11, decimal part: 0.81
2. Choose precision: 1/16 (denominator = 16)
3. 0.81 × 16 = 12.96 ≈ 13 (numerator)
4. Fraction: 13/16 (already simplified)
5. Result: 11 13/16"
Metric Example: 7mm
1. 7 mm ÷ 25.4 = 0.2756"
2. Use 1/32 precision (denominator = 32)
3. 0.2756 × 32 = 8.82 ≈ 9
4. Result: 9/32"
12.7 mm
6.35 mm
3.175 mm
1.588 mm