8/40 is equal to 0.2 in decimal form. Use our fraction to decimal calculator to convert any fraction to a decimal and to know if it is a terminating or a recurring (repeating) decimal.

Conversion table: fraction to decimal inches and millimeter equivalence

To convert fractions to decimals and millimeters and vice-versa use this formula:

1 inch = 25.4 mm  exactly, so ...

To convert from inch to millimeter multiply inch value by 25.4.

To convert from millimeter inch divide millimeter value by 25.4.

An easier way to do it is to use the table below. How?

Example 1

Convert 1 1/32" to mm:

Find 1 1/32 and read to the right under mm column! You will find 26.1938.

Example 2

Convert 0.875 decimal inches to inches (fraction form).

Look down the decimal column until you find 0.875, then read to the left to find 7/8 inches or move to the right column to find the mm value!

Practical fraction to decimal inches and millimeter conversion chart

Fraction to Decimal Calculator

Fraction to Decimal Calculator

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