MM to Inches Chart
Printable millimeter to inch conversion chart from 1 mm to 300 mm in decimal inches, with exact whole inches highlighted.
Free Printable MM to Inches Chart (PDF)
Every millimeter from 1 to 300 mm in decimal inches, with exact whole inches highlighted. Print it for your workshop, desk or toolbox.
How to Use This MM to Inches Chart
Find your millimeter value in the left column. The right column gives the inches in decimals (rounded to 4 places). Orange rows mark exact whole inches — for example, 2″ is exactly 50.8 mm. Click any millimeter value to open its full conversion page with more detail.
The formula behind every row is simple: inches = millimeters ÷ 25.4.
MM to Inches Chart: 1 mm to 50 mm
| Millimeters | Inches (decimal) |
|---|---|
| 1 mm | 0.0394″ |
| 2 mm | 0.0787″ |
| 3 mm | 0.1181″ |
| 4 mm | 0.1575″ |
| 5 mm | 0.1969″ |
| 6 mm | 0.2362″ |
| 7 mm | 0.2756″ |
| 8 mm | 0.3150″ |
| 9 mm | 0.3543″ |
| 10 mm | 0.3937″ |
| 11 mm | 0.4331″ |
| 12 mm | 0.4724″ |
| 13 mm | 0.5118″ |
| 14 mm | 0.5512″ |
| 15 mm | 0.5906″ |
| 16 mm | 0.6299″ |
| 17 mm | 0.6693″ |
| 18 mm | 0.7087″ |
| 19 mm | 0.7480″ |
| 20 mm | 0.7874″ |
| 21 mm | 0.8268″ |
| 22 mm | 0.8661″ |
| 23 mm | 0.9055″ |
| 24 mm | 0.9449″ |
| 25 mm | 0.9843″ |
| 25.4 mm | 1″ exactly |
| 26 mm | 1.0236″ |
| 27 mm | 1.0630″ |
| 28 mm | 1.1024″ |
| 29 mm | 1.1417″ |
| 30 mm | 1.1811″ |
| 31 mm | 1.2205″ |
| 32 mm | 1.2598″ |
| 33 mm | 1.2992″ |
| 34 mm | 1.3386″ |
| 35 mm | 1.3780″ |
| 36 mm | 1.4173″ |
| 37 mm | 1.4567″ |
| 38 mm | 1.4961″ |
| 39 mm | 1.5354″ |
| 40 mm | 1.5748″ |
| 41 mm | 1.6142″ |
| 42 mm | 1.6535″ |
| 43 mm | 1.6929″ |
| 44 mm | 1.7323″ |
| 45 mm | 1.7717″ |
| 46 mm | 1.8110″ |
| 47 mm | 1.8504″ |
| 48 mm | 1.8898″ |
| 49 mm | 1.9291″ |
| 50 mm | 1.9685″ |
| 50.8 mm | 2″ exactly |
MM to Inches Chart: 51 mm to 100 mm
| Millimeters | Inches (decimal) |
|---|---|
| 51 mm | 2.0079″ |
| 52 mm | 2.0472″ |
| 53 mm | 2.0866″ |
| 54 mm | 2.1260″ |
| 55 mm | 2.1654″ |
| 56 mm | 2.2047″ |
| 57 mm | 2.2441″ |
| 58 mm | 2.2835″ |
| 59 mm | 2.3228″ |
| 60 mm | 2.3622″ |
| 61 mm | 2.4016″ |
| 62 mm | 2.4409″ |
| 63 mm | 2.4803″ |
| 64 mm | 2.5197″ |
| 65 mm | 2.5591″ |
| 66 mm | 2.5984″ |
| 67 mm | 2.6378″ |
| 68 mm | 2.6772″ |
| 69 mm | 2.7165″ |
| 70 mm | 2.7559″ |
| 71 mm | 2.7953″ |
| 72 mm | 2.8346″ |
| 73 mm | 2.8740″ |
| 74 mm | 2.9134″ |
| 75 mm | 2.9528″ |
| 76 mm | 2.9921″ |
| 76.2 mm | 3″ exactly |
| 77 mm | 3.0315″ |
| 78 mm | 3.0709″ |
| 79 mm | 3.1102″ |
| 80 mm | 3.1496″ |
| 81 mm | 3.1890″ |
| 82 mm | 3.2283″ |
| 83 mm | 3.2677″ |
| 84 mm | 3.3071″ |
| 85 mm | 3.3465″ |
| 86 mm | 3.3858″ |
| 87 mm | 3.4252″ |
| 88 mm | 3.4646″ |
| 89 mm | 3.5039″ |
| 90 mm | 3.5433″ |
| 91 mm | 3.5827″ |
| 92 mm | 3.6220″ |
| 93 mm | 3.6614″ |
| 94 mm | 3.7008″ |
| 95 mm | 3.7402″ |
| 96 mm | 3.7795″ |
| 97 mm | 3.8189″ |
| 98 mm | 3.8583″ |
| 99 mm | 3.8976″ |
| 100 mm | 3.9370″ |
MM to Inches Chart: 100 mm to 300 mm
Larger sizes in 10 mm steps. For any value in between, use the mm to inches converter.
| Millimeters | Inches (decimal) |
|---|---|
| 100 mm | 3.9370″ |
| 101.6 mm | 4″ exactly |
| 110 mm | 4.3307″ |
| 120 mm | 4.7244″ |
| 127 mm | 5″ exactly |
| 130 mm | 5.1181″ |
| 140 mm | 5.5118″ |
| 150 mm | 5.9055″ |
| 152.4 mm | 6″ exactly |
| 160 mm | 6.2992″ |
| 170 mm | 6.6929″ |
| 177.8 mm | 7″ exactly |
| 180 mm | 7.0866″ |
| 190 mm | 7.4803″ |
| 200 mm | 7.8740″ |
| 203.2 mm | 8″ exactly |
| 210 mm | 8.2677″ |
| 220 mm | 8.6614″ |
| 228.6 mm | 9″ exactly |
| 230 mm | 9.0551″ |
| 240 mm | 9.4488″ |
| 250 mm | 9.8425″ |
| 254 mm | 10″ exactly |
| 260 mm | 10.2362″ |
| 270 mm | 10.6299″ |
| 279.4 mm | 11″ exactly |
| 280 mm | 11.0236″ |
| 290 mm | 11.4173″ |
| 300 mm | 11.8110″ |
| 304.8 mm | 12″ exactly |
Exact Whole Inches in MM
Whole inches almost never land on a whole millimeter, so they appear as orange rows in the charts above. For example, 51 mm is 2.0079″, while exactly 2 inches is 50.8 mm. Here are the exact values for whole inches:
| Inches | Exact MM |
|---|---|
| 1″ | 25.4 mm |
| 2″ | 50.8 mm |
| 3″ | 76.2 mm |
| 4″ | 101.6 mm |
| 5″ | 127.0 mm |
| 6″ | 152.4 mm |
| 7″ | 177.8 mm |
| 8″ | 203.2 mm |
| 9″ | 228.6 mm |
| 10″ | 254.0 mm |
| 11″ | 279.4 mm |
| 12″ | 304.8 mm |
For every 1/16″ from 0 to 12 inches, see the inches to mm chart.
Inch Fractions to MM Chart
Working the other way? Here are the common tape-measure fractions converted to millimeters.
| Inch Fraction | Decimal Inches | Millimeters |
|---|---|---|
| 1/16″ | 0.0625″ | 1.59 mm |
| 1/8″ | 0.1250″ | 3.17 mm |
| 3/16″ | 0.1875″ | 4.76 mm |
| 1/4″ | 0.2500″ | 6.35 mm |
| 5/16″ | 0.3125″ | 7.94 mm |
| 3/8″ | 0.3750″ | 9.52 mm |
| 7/16″ | 0.4375″ | 11.11 mm |
| 1/2″ | 0.5000″ | 12.70 mm |
| 9/16″ | 0.5625″ | 14.29 mm |
| 5/8″ | 0.6250″ | 15.88 mm |
| 11/16″ | 0.6875″ | 17.46 mm |
| 3/4″ | 0.7500″ | 19.05 mm |
| 13/16″ | 0.8125″ | 20.64 mm |
| 7/8″ | 0.8750″ | 22.22 mm |
| 15/16″ | 0.9375″ | 23.81 mm |
| 1″ | 1.0000″ | 25.40 mm |
MM to Inches Chart FAQ
How many inches is 1 mm?
1 millimeter equals 0.03937 inches. Put another way, there are 25.4 millimeters in one inch, so each millimeter is just under 1/25 of an inch.
How do I convert mm to inches without a chart?
Divide the millimeter value by 25.4. For example, 100 mm ÷ 25.4 = 3.9370 inches. To get a fraction, multiply the decimal part by 16 and round to the nearest whole number for sixteenths.
Why is 2 inches not listed as 51 mm?
Because 2 inches is exactly 50.8 mm, which falls between 50 mm and 51 mm. It is shown as a highlighted orange row in the chart. 51 mm is slightly more than 2 inches (2.0079 inches). For tape-measure fractions, use our inches to mm chart.
Can I print this mm to inches chart?
Yes. Click the Print Chart button at the top of the page. The page is set up to print cleanly without menus or ads, and you can choose Save as PDF in the print dialog to keep a digital copy.