How does mm compared to inches

Type in your own numbers in the form to convert the units! You can do the reverse unit conversion from inches to mm , or enter any two units below:. A millimetre American spelling: millimeter, symbol mm is one thousandth of a metre, which is the International System of Units SI base unit of length.

The millimetre is part of a metric system. A corresponding unit of area is the square inch and a corresponding unit of volume is the cubic inch. See all conversions for inches here. Converters by family. Clothing Clothes: dress and suit Hat size Shoe size Shoe size children. Computing Bandwidth Data storage. Dimension Area Length Volume. It's not a good idea for homework problems that require an exact answer, but you can use it to double check your answer and make sure it's in the right ballpark.

In the example, the exact answer is actually The estimate is less than a third of an inch off, which is pretty good for mental math. There are Proceeding in the other direction, Not Helpful 3 Helpful Not Helpful 0 Helpful One millimeter equals 0. Not Helpful 4 Helpful Not Helpful 5 Helpful I need to know how large is 20 mm wide x 26 mm long in comparison to a penny or dime?

Not Helpful 4 Helpful 9. Not Helpful 4 Helpful 6. Divide that by 6. Not Helpful 2 Helpful 1. Since there are Not Helpful 1 Helpful 4. Since one inch equals Not Helpful 0 Helpful 2. Include your email address to get a message when this question is answered. If you're measuring an area, you'll need to convert from square millimeters mm 2 to square inches in 2.

Note that Helpful 0 Not Helpful 0. For volume measurements, convert from cubic millimeters mm 3 to cubic inches in 3. Some guides will tell you to multiply by 0.

For any other units of height, you may wish to use the height calculator here. Warning: It is necessary to enable JavaScript for full calculator functionality.

Here are some instructions for how to enable JavaScript in your browser. Popup calculator Copy a link to this page Print this page Email a link to this page Scroll up to form What does this mean?

Quick Search:. Convert to: Millimeters [mm] Inches [in]. Value to convert:.