There are 25.4 millimetres in every inch. To convert to millimetres, you have to multiply by 25.4. ¼ is 0.25in. 0.25x25.4 = 6.35mm.
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One quarter inch is slightly smaller than 3 mm. One inch is equivalent to 25.4 mm, so one quarter inch is 6.35 mm.
There are 25.4 millimeters in one inch.
There are 25.4 millimeters in one inch.
There are 25.4 millimetres in an inch. Therefore a millimetre is 0.03937 inches. To find out how many quarter inches are in a millimetre, you'd multiply by 4 as there are 4 quarters in a unit. 0.03937*4 is 0.1575 quarter inches in a millimetre.
There are 25.4 millimeters in one inch.