Fraction Decimal Chart

Inch Fraction Calculator

Convert mixed inch measurements to decimal inches and millimeters. The calculator accepts values like 3/8, 1 3/16, and 0.1875.

Inch Fraction Calculator

Use the main calculator to enter fractions, decimals, mixed inch values, or millimeters. The chart below gives quick reference values for this page.

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Common Mixed Inch Fractions

Mixed inch examples with decimal and millimeter equivalents.

Inch fractionDecimal inchesMillimetersNearest 1/64
1 1/16 1.0625 in 26.988 mm 1 1/16
1 1/8 1.1250 in 28.575 mm 1 1/8
1 3/16 1.1875 in 30.163 mm 1 3/16
1 1/4 1.2500 in 31.750 mm 1 1/4
1 3/8 1.3750 in 34.925 mm 1 3/8
1 1/2 1.5000 in 38.100 mm 1 1/2
2 1/4 2.2500 in 57.150 mm 2 1/4
2 3/8 2.3750 in 60.325 mm 2 3/8

Note: Values are based on 1 inch = 25.4 millimeters.

Reading mixed inch values

  • The whole number is added to the fraction.
  • 1 3/16 means 1 inch plus 3/16 inch.
  • The decimal value is 1.1875 inches.

When to keep a mixed fraction

  • Mixed fractions are easier to mark on a ruler.
  • Decimals are better for calculators and CNC input.
  • Millimeters help when matching metric drawings.

All Conversion Charts

Decimal to Fraction ChartFraction to Decimal CalculatorDecimal Inch ChartMM to Inches Fraction ChartMM to Inches Fraction CalculatorInch Decimal to Fraction CalculatorFraction to Percent ChartFraction to MM ChartRuler Fraction ChartPrintable Fraction Decimal Chart1/16 Fraction Chart1/32 Fraction ChartPrintable 1/64 Chart