How Many Mm In 1/4 Inch?

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Because millimeters are very small, they are perfect for measuring jewelry parts. For example, the gluing surfaces on most of our flat pad posts are 3mm, 4mm, 6mm, 8mm, and 10mm. If those were converted khổng lồ inches, they would be (in order) approximately 1/8 inch, 5/32 inch, 1/4 inch, 5/16 inch, and 3/8 inch.

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Even if you"ve always hated the metric system, that row of millimeter sizes is clearer than that row of inch fractions: it"s obvious that 4mm is larger then 3mm ... But is 1/8" larger or smaller then 5/32"? In case you"ve never gotten along with millimeters, or in case you need to vì some conversions and never got along with algebra, this page contains easy conversions back and forth between inches và millimeters.

Sections on this page:

Easy estimates, without a calculator How lớn make Exact Conversions, with a calculator

Easy Approximations, without a calculator:

If you have the inches, & need to know the millimeters: In order of increasing size... 1/16 inch = almost 2mm 1/8 inch = just barely over 3mm 1/4 inch = just barely over 6mm 3/8 inch = almost 10mm một nửa inch = almost 13mm 5/8 inch = 16mm ba phần tư inch = 19mm 7/8 inch = just barely over 22mm 1 inch = 25.4mm If you have the millimeters, và need lớn know the inches:1mm = just over 1/32 inch 2mm = just over 1/16 inch 3mm = almost 1/8 inch 4mm = 5/32 inch (= a bit over 1/8 inch) 5mm = just over 3/16 inch 6mm = almost 1/4 inch 7mm = almost 9/32 inch (= a bit over 1/4 inch) 8mm = 5/16 inch 9mm = almost 3/8 inch 10mm = just over 3/8 inch 11mm = almost 7/16 inch 12mm = almost 15/32 inch (= almost một nửa inch) 13mm = just over một nửa inch 14mm = almost 9/16 inch 15mm = almost 19/32 inch 16mm = 5/8 inch 17mm = almost 11/16 inch 18mm = just over 11/16 inch 19mm = 3/4 inch 20mm = 25/32 inch 21mm = just over 13/16 inch 22mm = almost 7/8 inch 23mm = 29/32 inch 24mm = just over 15/16 inch 25mm = almost 1 inch

Calculator Conversions

Miscellaneous Numbers for Conversions

to Convert... Inches khổng lồ millimeters, multiply by 25.4 inches to lớn centimeters, multiply by 2.54 millimeters to inches, divide by 25.4 centimeters to lớn inches, divide by 2.54 meters lớn feet, multiply by 3.28 feet to lớn meters, divide by 3.28 millimeters to lớn centimeters, divide by 10 centimeters to lớn meters, divide by 100
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