Enter the length in inches below to convert to millimeters, or mm to inches, fractional inch to mm
Inches (in) to millimeters (mm) conversion formula is: Millimeters = Inches * 25.4
Inches and millimeters are the units of measurement, but these two measurements are used in different systems. Inches are used in the imperial system, while millimeters are used in the metric system. We need to understand the relationship between inches and millimeters before we do the conversion, one inch is internationally accepted as being equivalent to 25.4 millimeters. So as we know, the conversion factor for inches to millimeters is 25.4. To convert any number of inches to millimeters, we simply multiply the conversion factor of 25.4 by the number of inches.
For example, here is 2 inches you want to convert these 2 inches to millimeters to make the measurement easier to understand. to get the answer multiply 2 inches with 25.4, so 2 inches is equal to 50.8 millimeters.
| Units | 1 in = |
|---|---|
| Foot | 0.0833333 ft |
| Yard | 0.0277778 yd |
| Mile | 0.0000157828 mi |
| Millimeter | 25.4 mm |
| Centimeter | 2.54 cm |
| Meter | 0.0254 m |
| Kilometer | 0.0000254 km |
An inch (symbol: in or ″) is a unit of length in the British imperial and the United States customary systems of measurement.
A millimeter (mm) is a small unit of Displacement (length/distance) in the metric system. equals to one thousandth of a meter. It's used throughout the world in the sciences and is the standard of measurement for science engineering, mathematics and technology.
| Inches (in) | Millimeters (mm) |
|---|---|
| 1 in | 25.399999 mm |
| 1.5 in | 38.099999 mm |
| 2 in | 50.799999 mm |
| 2.5 in | 63.499999 mm |
| 3 in | 76.199999 mm |
| 4 in | 101.599999 mm |
| 5 in | 126.999999 mm |
| 6 in | 152.399999 mm |
| 7 in | 177.799999 mm |
| 8 in | 203.199999 mm |
| 9 in | 228.599999 mm |
| 10 in | 253.999999 mm |
| 11 in | 279.399999 mm |
| 12 in | 304.799999 mm |
| 13 in | 330.199999 mm |
| 14 in | 355.599999 mm |
| 15 in | 380.999999 mm |
| 16 in | 406.399999 mm |
| 17 in | 431.799999 mm |
| 18 in | 457.199999 mm |
| 19 in | 482.599999 mm |
| 20 in | 507.999999 mm |
| 25 in | 634.999999 mm |
| 30 in | 761.999999 mm |
| 35 in | 888.999999 mm |
| Inches (in) | Millimeters (mm) |
|---|---|
| 40 in | 1015.999999 mm |
| 45 in | 1142.999999 mm |
| 50 in | 1269.999999 mm |
| 55 in | 1396.999999 mm |
| 60 in | 1523.999999 mm |
| 65 in | 1650.999999 mm |
| 70 in | 1777.999999 mm |
| 75 in | 1904.999999 mm |
| 80 in | 2031.999999 mm |
| 85 in | 2158.999999 mm |
| 90 in | 2285.999999 mm |
| 95 in | 2412.999999 mm |
| 100 in | 2539.999999 mm |
| 105 in | 2666.999999 mm |
| 110 in | 2793.999999 mm |
| 115 in | 2920.999999 mm |
| 120 in | 3047.999999 mm |
| 125 in | 3174.999999 mm |
| 130 in | 3301.999999 mm |
| 135 in | 3428.999999 mm |
| 140 in | 3555.999999 mm |
| 145 in | 3682.999999 mm |
| 150 in | 3809.999999 mm |
| 155 in | 3936.999999 mm |
| 160 in | 4063.999999 mm |
| Inches (in) | Millimeters (mm) |
|---|---|
| 165 in | 4190.999999 mm |
| 170 in | 4317.999999 mm |
| 175 in | 4444.999999 mm |
| 180 in | 4571.999999 mm |
| 185 in | 4698.999999 mm |
| 190 in | 4825.999999 mm |
| 195 in | 4952.999999 mm |
| 200 in | 5079.999999 mm |
| 205 in | 5206.999999 mm |
| 210 in | 5333.999999 mm |
| 215 in | 5460.999999 mm |
| 220 in | 5587.999999 mm |
| 230 in | 5841.999999 mm |
| 240 in | 6095.999999 mm |
| 250 in | 6349.999999 mm |
| 260 in | 6603.999999 mm |
| 270 in | 6857.999999 mm |
| 280 in | 7111.999999 mm |
| 290 in | 7365.999999 mm |
| 300 in | 7619.999999 mm |
| 325 in | 8254.999999 mm |
| 350 in | 8889.999999 mm |
| 375 in | 9524.999999 mm |
| 400 in | 10159.999999 mm |
| 425 in | 10794.999999 mm |
| Inches (in) | Millimeters (mm) |
|---|---|
| 450 in | 11429.999999 mm |
| 475 in | 12064.999999 mm |
| 500 in | 12699.999999 mm |
| 550 in | 13969.999999 mm |
| 600 in | 15239.999999 mm |
| 650 in | 16509.999999 mm |
| 700 in | 17779.999999 mm |
| 750 in | 19049.999999 mm |
| 800 in | 20319.999999 mm |
| 900 in | 22859.999999 mm |
| 1000 in | 25399.999999 mm |
| 1100 in | 27939.999999 mm |
| 1200 in | 30479.999999 mm |
| 1300 in | 33019.999999 mm |
| 1400 in | 35559.999999 mm |
| 1500 in | 38099.999999 mm |
| 1600 in | 40639.999999 mm |
| 1700 in | 43179.999999 mm |
| 1800 in | 45719.999999 mm |
| 1900 in | 48259.999999 mm |
| 2000 in | 50799.999999 mm |
| 2500 in | 63499.999999 mm |
| 3000 in | 76199.999999 mm |
| 4000 in | 101599.999999 mm |
| 5000 in | 126999.999999 mm |
One inch is equal to 25.4 millimeters.
The answer to 2.5 inches to mm is 63.5 millimeters. There are 25.4 millimeters in one inch. So we multiply 2.5 inches by 25.4.
According to the above calculation method, multiplying 5 by 25.4 gives the answer of 127 millimeters to convert 5 inches to mm.