Inches to MM Chart
Printable inch to millimeter conversion chart for every 1/16″ from 0 to 12 inches — fractions, decimals and mm.
Free Printable Inches to MM Chart (PDF)
Every 1/16 inch from 0 to 12 inches, in fractions, decimals and millimeters — the way your tape measure reads. Print it for your workshop or toolbox.
The Key Number
1″ = 25.4 mm
Exactly — so 2″ = 50.8 mm, 6″ = 152.4 mm and 12″ = 304.8 mm
How to Use This Inches to MM Chart
Find the inch mark from your tape measure or ruler in the left column. The middle column shows the same size as a decimal, and the right column gives the exact millimeters (rounded to 2 decimal places). Orange rows are whole inches.
The formula behind every row: millimeters = inches × 25.4.
Inches to MM Chart: 0″ to 3″
| Inches (fraction) | Decimal Inches | Millimeters |
|---|---|---|
| 0 | 0.0000″ | 0.00 mm |
| 1/16″ | 0.0625″ | 1.59 mm |
| 1/8″ | 0.1250″ | 3.18 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″ | 9.53 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″ | 22.23 mm |
| 15/16″ | 0.9375″ | 23.81 mm |
| 1″ | 1.0000″ | 25.40 mm |
| 1 1/16″ | 1.0625″ | 26.99 mm |
| 1 1/8″ | 1.1250″ | 28.58 mm |
| 1 3/16″ | 1.1875″ | 30.16 mm |
| 1 1/4″ | 1.2500″ | 31.75 mm |
| 1 5/16″ | 1.3125″ | 33.34 mm |
| 1 3/8″ | 1.3750″ | 34.93 mm |
| 1 7/16″ | 1.4375″ | 36.51 mm |
| 1 1/2″ | 1.5000″ | 38.10 mm |
| 1 9/16″ | 1.5625″ | 39.69 mm |
| 1 5/8″ | 1.6250″ | 41.28 mm |
| 1 11/16″ | 1.6875″ | 42.86 mm |
| 1 3/4″ | 1.7500″ | 44.45 mm |
| 1 13/16″ | 1.8125″ | 46.04 mm |
| 1 7/8″ | 1.8750″ | 47.63 mm |
| 1 15/16″ | 1.9375″ | 49.21 mm |
| 2″ | 2.0000″ | 50.80 mm |
| 2 1/16″ | 2.0625″ | 52.39 mm |
| 2 1/8″ | 2.1250″ | 53.98 mm |
| 2 3/16″ | 2.1875″ | 55.56 mm |
| 2 1/4″ | 2.2500″ | 57.15 mm |
| 2 5/16″ | 2.3125″ | 58.74 mm |
| 2 3/8″ | 2.3750″ | 60.33 mm |
| 2 7/16″ | 2.4375″ | 61.91 mm |
| 2 1/2″ | 2.5000″ | 63.50 mm |
| 2 9/16″ | 2.5625″ | 65.09 mm |
| 2 5/8″ | 2.6250″ | 66.68 mm |
| 2 11/16″ | 2.6875″ | 68.26 mm |
| 2 3/4″ | 2.7500″ | 69.85 mm |
| 2 13/16″ | 2.8125″ | 71.44 mm |
| 2 7/8″ | 2.8750″ | 73.03 mm |
| 2 15/16″ | 2.9375″ | 74.61 mm |
| 3″ | 3.0000″ | 76.20 mm |
Inches to MM Chart: 3″ to 6″
| Inches (fraction) | Decimal Inches | Millimeters |
|---|---|---|
| 3 1/16″ | 3.0625″ | 77.79 mm |
| 3 1/8″ | 3.1250″ | 79.38 mm |
| 3 3/16″ | 3.1875″ | 80.96 mm |
| 3 1/4″ | 3.2500″ | 82.55 mm |
| 3 5/16″ | 3.3125″ | 84.14 mm |
| 3 3/8″ | 3.3750″ | 85.73 mm |
| 3 7/16″ | 3.4375″ | 87.31 mm |
| 3 1/2″ | 3.5000″ | 88.90 mm |
| 3 9/16″ | 3.5625″ | 90.49 mm |
| 3 5/8″ | 3.6250″ | 92.08 mm |
| 3 11/16″ | 3.6875″ | 93.66 mm |
| 3 3/4″ | 3.7500″ | 95.25 mm |
| 3 13/16″ | 3.8125″ | 96.84 mm |
| 3 7/8″ | 3.8750″ | 98.43 mm |
| 3 15/16″ | 3.9375″ | 100.01 mm |
| 4″ | 4.0000″ | 101.60 mm |
| 4 1/16″ | 4.0625″ | 103.19 mm |
| 4 1/8″ | 4.1250″ | 104.78 mm |
| 4 3/16″ | 4.1875″ | 106.36 mm |
| 4 1/4″ | 4.2500″ | 107.95 mm |
| 4 5/16″ | 4.3125″ | 109.54 mm |
| 4 3/8″ | 4.3750″ | 111.13 mm |
| 4 7/16″ | 4.4375″ | 112.71 mm |
| 4 1/2″ | 4.5000″ | 114.30 mm |
| 4 9/16″ | 4.5625″ | 115.89 mm |
| 4 5/8″ | 4.6250″ | 117.48 mm |
| 4 11/16″ | 4.6875″ | 119.06 mm |
| 4 3/4″ | 4.7500″ | 120.65 mm |
| 4 13/16″ | 4.8125″ | 122.24 mm |
| 4 7/8″ | 4.8750″ | 123.83 mm |
| 4 15/16″ | 4.9375″ | 125.41 mm |
| 5″ | 5.0000″ | 127.00 mm |
| 5 1/16″ | 5.0625″ | 128.59 mm |
| 5 1/8″ | 5.1250″ | 130.18 mm |
| 5 3/16″ | 5.1875″ | 131.76 mm |
| 5 1/4″ | 5.2500″ | 133.35 mm |
| 5 5/16″ | 5.3125″ | 134.94 mm |
| 5 3/8″ | 5.3750″ | 136.53 mm |
| 5 7/16″ | 5.4375″ | 138.11 mm |
| 5 1/2″ | 5.5000″ | 139.70 mm |
| 5 9/16″ | 5.5625″ | 141.29 mm |
| 5 5/8″ | 5.6250″ | 142.88 mm |
| 5 11/16″ | 5.6875″ | 144.46 mm |
| 5 3/4″ | 5.7500″ | 146.05 mm |
| 5 13/16″ | 5.8125″ | 147.64 mm |
| 5 7/8″ | 5.8750″ | 149.23 mm |
| 5 15/16″ | 5.9375″ | 150.81 mm |
| 6″ | 6.0000″ | 152.40 mm |
Inches to MM Chart: 6″ to 9″
| Inches (fraction) | Decimal Inches | Millimeters |
|---|---|---|
| 6 1/16″ | 6.0625″ | 153.99 mm |
| 6 1/8″ | 6.1250″ | 155.58 mm |
| 6 3/16″ | 6.1875″ | 157.16 mm |
| 6 1/4″ | 6.2500″ | 158.75 mm |
| 6 5/16″ | 6.3125″ | 160.34 mm |
| 6 3/8″ | 6.3750″ | 161.93 mm |
| 6 7/16″ | 6.4375″ | 163.51 mm |
| 6 1/2″ | 6.5000″ | 165.10 mm |
| 6 9/16″ | 6.5625″ | 166.69 mm |
| 6 5/8″ | 6.6250″ | 168.28 mm |
| 6 11/16″ | 6.6875″ | 169.86 mm |
| 6 3/4″ | 6.7500″ | 171.45 mm |
| 6 13/16″ | 6.8125″ | 173.04 mm |
| 6 7/8″ | 6.8750″ | 174.63 mm |
| 6 15/16″ | 6.9375″ | 176.21 mm |
| 7″ | 7.0000″ | 177.80 mm |
| 7 1/16″ | 7.0625″ | 179.39 mm |
| 7 1/8″ | 7.1250″ | 180.98 mm |
| 7 3/16″ | 7.1875″ | 182.56 mm |
| 7 1/4″ | 7.2500″ | 184.15 mm |
| 7 5/16″ | 7.3125″ | 185.74 mm |
| 7 3/8″ | 7.3750″ | 187.33 mm |
| 7 7/16″ | 7.4375″ | 188.91 mm |
| 7 1/2″ | 7.5000″ | 190.50 mm |
| 7 9/16″ | 7.5625″ | 192.09 mm |
| 7 5/8″ | 7.6250″ | 193.68 mm |
| 7 11/16″ | 7.6875″ | 195.26 mm |
| 7 3/4″ | 7.7500″ | 196.85 mm |
| 7 13/16″ | 7.8125″ | 198.44 mm |
| 7 7/8″ | 7.8750″ | 200.03 mm |
| 7 15/16″ | 7.9375″ | 201.61 mm |
| 8″ | 8.0000″ | 203.20 mm |
| 8 1/16″ | 8.0625″ | 204.79 mm |
| 8 1/8″ | 8.1250″ | 206.38 mm |
| 8 3/16″ | 8.1875″ | 207.96 mm |
| 8 1/4″ | 8.2500″ | 209.55 mm |
| 8 5/16″ | 8.3125″ | 211.14 mm |
| 8 3/8″ | 8.3750″ | 212.73 mm |
| 8 7/16″ | 8.4375″ | 214.31 mm |
| 8 1/2″ | 8.5000″ | 215.90 mm |
| 8 9/16″ | 8.5625″ | 217.49 mm |
| 8 5/8″ | 8.6250″ | 219.08 mm |
| 8 11/16″ | 8.6875″ | 220.66 mm |
| 8 3/4″ | 8.7500″ | 222.25 mm |
| 8 13/16″ | 8.8125″ | 223.84 mm |
| 8 7/8″ | 8.8750″ | 225.43 mm |
| 8 15/16″ | 8.9375″ | 227.01 mm |
| 9″ | 9.0000″ | 228.60 mm |
Inches to MM Chart: 9″ to 12″
| Inches (fraction) | Decimal Inches | Millimeters |
|---|---|---|
| 9 1/16″ | 9.0625″ | 230.19 mm |
| 9 1/8″ | 9.1250″ | 231.78 mm |
| 9 3/16″ | 9.1875″ | 233.36 mm |
| 9 1/4″ | 9.2500″ | 234.95 mm |
| 9 5/16″ | 9.3125″ | 236.54 mm |
| 9 3/8″ | 9.3750″ | 238.13 mm |
| 9 7/16″ | 9.4375″ | 239.71 mm |
| 9 1/2″ | 9.5000″ | 241.30 mm |
| 9 9/16″ | 9.5625″ | 242.89 mm |
| 9 5/8″ | 9.6250″ | 244.48 mm |
| 9 11/16″ | 9.6875″ | 246.06 mm |
| 9 3/4″ | 9.7500″ | 247.65 mm |
| 9 13/16″ | 9.8125″ | 249.24 mm |
| 9 7/8″ | 9.8750″ | 250.83 mm |
| 9 15/16″ | 9.9375″ | 252.41 mm |
| 10″ | 10.0000″ | 254.00 mm |
| 10 1/16″ | 10.0625″ | 255.59 mm |
| 10 1/8″ | 10.1250″ | 257.18 mm |
| 10 3/16″ | 10.1875″ | 258.76 mm |
| 10 1/4″ | 10.2500″ | 260.35 mm |
| 10 5/16″ | 10.3125″ | 261.94 mm |
| 10 3/8″ | 10.3750″ | 263.53 mm |
| 10 7/16″ | 10.4375″ | 265.11 mm |
| 10 1/2″ | 10.5000″ | 266.70 mm |
| 10 9/16″ | 10.5625″ | 268.29 mm |
| 10 5/8″ | 10.6250″ | 269.88 mm |
| 10 11/16″ | 10.6875″ | 271.46 mm |
| 10 3/4″ | 10.7500″ | 273.05 mm |
| 10 13/16″ | 10.8125″ | 274.64 mm |
| 10 7/8″ | 10.8750″ | 276.23 mm |
| 10 15/16″ | 10.9375″ | 277.81 mm |
| 11″ | 11.0000″ | 279.40 mm |
| 11 1/16″ | 11.0625″ | 280.99 mm |
| 11 1/8″ | 11.1250″ | 282.58 mm |
| 11 3/16″ | 11.1875″ | 284.16 mm |
| 11 1/4″ | 11.2500″ | 285.75 mm |
| 11 5/16″ | 11.3125″ | 287.34 mm |
| 11 3/8″ | 11.3750″ | 288.93 mm |
| 11 7/16″ | 11.4375″ | 290.51 mm |
| 11 1/2″ | 11.5000″ | 292.10 mm |
| 11 9/16″ | 11.5625″ | 293.69 mm |
| 11 5/8″ | 11.6250″ | 295.28 mm |
| 11 11/16″ | 11.6875″ | 296.86 mm |
| 11 3/4″ | 11.7500″ | 298.45 mm |
| 11 13/16″ | 11.8125″ | 300.04 mm |
| 11 7/8″ | 11.8750″ | 301.63 mm |
| 11 15/16″ | 11.9375″ | 303.21 mm |
| 12″ | 12.0000″ | 304.80 mm |
Inches to MM Chart FAQ
How many mm is 1 inch?
1 inch is exactly 25.4 millimeters. This has been the international standard since 1959, so every value in this chart is calculated from 25.4 mm per inch.
How many mm is 2 inches?
2 inches is exactly 50.8 mm. Multiply the inches by 25.4: 2 × 25.4 = 50.8 mm.
How do I convert inch fractions to mm?
Divide the top number by the bottom number to get a decimal, then multiply by 25.4. For example, 3/8″ = 0.375 × 25.4 = 9.525 mm, which rounds to 9.53 mm.
Can I download this inches to mm chart?
Yes. Click Download Free PDF at the top of the page to save a one-page printable chart, or use the Print button to print it straight away. No sign-up is needed.