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Fractional Inch Calculator

Add or subtract two woodworking measurements entered as feet, mixed inches, and fractions.

Prefilled values are examples. Replace them with measurements and current costs for your project.

Inputs

Measurements

Range: at least 0

Enter a nonnegative whole number of feet.

Range: at least 0

Enter a nonnegative whole number. Enter the fractional part in the numerator and denominator fields.

Range: at least 0

Range: at least 1

Enter a positive whole number. For example, enter 3 and 8 for 3/8 inch.

Range: at least 0

Enter a nonnegative whole number of feet.

Range: at least 0

Range: at least 0

Range: at least 1

Enter a positive whole number. The numerator should be smaller than the denominator for a mixed measurement.

Result

Result in decimal inches
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Result in millimeters
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Formula

Result in decimal inches
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Result in millimeters
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Results are planning aids based on the inputs and assumptions shown. Verify dimensions, stock sizes, hardware clearances, kerf, and current prices against your project before cutting or quoting.