Convert inches to millimetres — table and converter
To convert inches to millimetres use the form or the table below.
See the definitions of an inch and a millimetre.
See the table for the reverse conversion from millimetres into inches.
Inches to millimetres | |||||
---|---|---|---|---|---|
From 0 to 1 | From 1 to 100 | From 101 to 200 | |||
Inches | Mm | Inches | Mm | Inches | Mm |
0.01 | 0.254 | 1 | 25.4 | 101 | 2,565.4 |
0.02 | 0.508 | 2 | 50.8 | 102 | 2,590.8 |
0.03 | 0.762 | 3 | 76.2 | 103 | 2,616.2 |
0.04 | 1.016 | 4 | 101.6 | 104 | 2,641.6 |
0.05 | 1.270 | 5 | 127.0 | 105 | 2,667.0 |
0.06 | 1.524 | 6 | 152.4 | 106 | 2,692.4 |
0.07 | 1.778 | 7 | 177.8 | 107 | 2,717.8 |
0.08 | 2.032 | 8 | 203.2 | 108 | 2,743.2 |
0.09 | 2.286 | 9 | 228.6 | 109 | 2,768.6 |
0.10 | 2.540 | 10 | 254.0 | 110 | 2,794.0 |
0.11 | 2.794 | 11 | 279.4 | 111 | 2,819.4 |
0.12 | 3.048 | 12 | 304.8 | 112 | 2,844.8 |
0.13 | 3.302 | 13 | 330.2 | 113 | 2,870.2 |
0.14 | 3.556 | 14 | 355.6 | 114 | 2,895.6 |
0.15 | 3.810 | 15 | 381.0 | 115 | 2,921.0 |
0.16 | 4.064 | 16 | 406.4 | 116 | 2,946.4 |
0.17 | 4.318 | 17 | 431.8 | 117 | 2,971.8 |
0.18 | 4.572 | 18 | 457.2 | 118 | 2,997.2 |
0.19 | 4.826 | 19 | 482.6 | 119 | 3,022.6 |
0.20 | 5.080 | 20 | 508.0 | 120 | 3,048.0 |
0.21 | 5.334 | 21 | 533.4 | 121 | 3,073.4 |
0.22 | 5.588 | 22 | 558.8 | 122 | 3,098.8 |
0.23 | 5.842 | 23 | 584.2 | 123 | 3,124.2 |
0.24 | 6.096 | 24 | 609.6 | 124 | 3,149.6 |
0.25 | 6.350 | 25 | 635.0 | 125 | 3,175.0 |
Inches | Mm | Inches | Mm | Inches | Mm |
0.26 | 6.604 | 26 | 660.4 | 126 | 3,200.4 |
0.27 | 6.858 | 27 | 685.8 | 127 | 3,225.8 |
0.28 | 7.112 | 28 | 711.2 | 128 | 3,251.2 |
0.29 | 7.366 | 29 | 736.6 | 129 | 3,276.6 |
0.30 | 7.620 | 30 | 762.0 | 130 | 3,302.0 |
0.31 | 7.874 | 31 | 787.4 | 131 | 3,327.4 |
0.32 | 8.128 | 32 | 812.8 | 132 | 3,352.8 |
0.33 | 8.382 | 33 | 838.2 | 133 | 3,378.2 |
0.34 | 8.636 | 34 | 863.6 | 134 | 3,403.6 |
0.35 | 8.890 | 35 | 889.0 | 135 | 3,429.0 |
0.36 | 9.144 | 36 | 914.4 | 136 | 3,454.4 |
0.37 | 9.398 | 37 | 939.8 | 137 | 3,479.8 |
0.38 | 9.652 | 38 | 965.2 | 138 | 3,505.2 |
0.39 | 9.906 | 39 | 990.6 | 139 | 3,530.6 |
0.40 | 10.160 | 40 | 1,016.0 | 140 | 3,556.0 |
0.41 | 10.414 | 41 | 1,041.4 | 141 | 3,581.4 |
0.42 | 10.668 | 42 | 1,066.8 | 142 | 3,606.8 |
0.43 | 10.922 | 43 | 1,092.2 | 143 | 3,632.2 |
0.44 | 11.176 | 44 | 1,117.6 | 144 | 3,657.6 |
0.45 | 11.430 | 45 | 1,143.0 | 145 | 3,683.0 |
0.46 | 11.684 | 46 | 1,168.4 | 146 | 3,708.4 |
0.47 | 11.938 | 47 | 1,193.8 | 147 | 3,733.8 |
0.48 | 12.192 | 48 | 1,219.2 | 148 | 3,759.2 |
0.49 | 12.446 | 49 | 1,244.6 | 149 | 3,784.6 |
0.50 | 12.700 | 50 | 1,270.0 | 150 | 3,810.0 |
Inches | Mm | Inches | Mm | Inches | Mm |
0.51 | 12.954 | 51 | 1,295.4 | 151 | 3,835.4 |
0.52 | 13.208 | 52 | 1,320.8 | 152 | 3,860.8 |
0.53 | 13.462 | 53 | 1,346.2 | 153 | 3,886.2 |
0.54 | 13.716 | 54 | 1,371.6 | 154 | 3,911.6 |
0.55 | 13.970 | 55 | 1,397.0 | 155 | 3,937.0 |
0.56 | 14.224 | 56 | 1,422.4 | 156 | 3,962.4 |
0.57 | 14.478 | 57 | 1,447.8 | 157 | 3,987.8 |
0.58 | 14.732 | 58 | 1,473.2 | 158 | 4,013.2 |
0.59 | 14.986 | 59 | 1,498.6 | 159 | 4,038.6 |
0.60 | 15.240 | 60 | 1,524.0 | 160 | 4,064.0 |
0.61 | 15.494 | 61 | 1,549.4 | 161 | 4,089.4 |
0.62 | 15.748 | 62 | 1,574.8 | 162 | 4,114.8 |
0.63 | 16.002 | 63 | 1,600.2 | 163 | 4,140.2 |
0.64 | 16.256 | 64 | 1,625.6 | 164 | 4,165.6 |
0.65 | 16.510 | 65 | 1,651.0 | 165 | 4,191.0 |
0.66 | 16.764 | 66 | 1,676.4 | 166 | 4,216.4 |
0.67 | 17.018 | 67 | 1,701.8 | 167 | 4,241.8 |
0.68 | 17.272 | 68 | 1,727.2 | 168 | 4,267.2 |
0.69 | 17.526 | 69 | 1,752.6 | 169 | 4,292.6 |
0.70 | 17.780 | 70 | 1,778.0 | 170 | 4,318.0 |
0.71 | 18.034 | 71 | 1,803.4 | 171 | 4,343.4 |
0.72 | 18.288 | 72 | 1,828.8 | 172 | 4,368.8 |
0.73 | 18.542 | 73 | 1,854.2 | 173 | 4,394.2 |
0.74 | 18.796 | 74 | 1,879.6 | 174 | 4,419.6 |
0.75 | 19.050 | 75 | 1,905.0 | 175 | 4,445.0 |
Inches | Mm | Inches | Mm | Inches | Mm |
0.76 | 19.304 | 76 | 1,930.4 | 176 | 4,470.4 |
0.77 | 19.558 | 77 | 1,955.8 | 177 | 4,495.8 |
0.78 | 19.812 | 78 | 1,981.2 | 178 | 4,521.2 |
0.79 | 20.066 | 79 | 2,006.6 | 179 | 4,546.6 |
0.80 | 20.320 | 80 | 2,032.0 | 180 | 4,572.0 |
0.81 | 20.574 | 81 | 2,057.4 | 181 | 4,597.4 |
0.82 | 20.828 | 82 | 2,082.8 | 182 | 4,622.8 |
0.83 | 21.082 | 83 | 2,108.2 | 183 | 4,648.2 |
0.84 | 21.336 | 84 | 2,133.6 | 184 | 4,673.6 |
0.85 | 21.590 | 85 | 2,159.0 | 185 | 4,699.0 |
0.86 | 21.844 | 86 | 2,184.4 | 186 | 4,724.4 |
0.87 | 22.098 | 87 | 2,209.8 | 187 | 4,749.8 |
0.88 | 22.352 | 88 | 2,235.2 | 188 | 4,775.2 |
0.89 | 22.606 | 89 | 2,260.6 | 189 | 4,800.6 |
0.90 | 22.860 | 90 | 2,286.0 | 190 | 4,826.0 |
0.91 | 23.114 | 91 | 2,311.4 | 191 | 4,851.4 |
0.92 | 23.368 | 92 | 2,336.8 | 192 | 4,876.8 |
0.93 | 23.622 | 93 | 2,362.2 | 193 | 4,902.2 |
0.94 | 23.876 | 94 | 2,387.6 | 194 | 4,927.6 |
0.95 | 24.130 | 95 | 2,413.0 | 195 | 4,953.0 |
0.96 | 24.384 | 96 | 2,438.4 | 196 | 4,978.4 |
0.97 | 24.638 | 97 | 2,463.8 | 197 | 5,003.8 |
0.98 | 24.892 | 98 | 2,489.2 | 198 | 5,029.2 |
0.99 | 25.146 | 99 | 2,514.6 | 199 | 5,054.6 |
1.00 | 25.400 | 100 | 2,540.0 | 200 | 5,080.0 |
Inches | Mm | Inches | Mm | Inches | Mm |
Inches to millimetres | |||||
---|---|---|---|---|---|
From 201 to 300 | From 301 to 400 | From 401 to 500 | |||
Inches | Mm | Inches | Mm | Inches | Mm |
201 | 5,105.4 | 301 | 7,645.4 | 401 | 10,185.4 |
202 | 5,130.8 | 302 | 7,670.8 | 402 | 10,210.8 |
203 | 5,156.2 | 303 | 7,696.2 | 403 | 10,236.2 |
204 | 5,181.6 | 304 | 7,721.6 | 404 | 10,261.6 |
205 | 5,207.0 | 305 | 7,747.0 | 405 | 10,287.0 |
206 | 5,232.4 | 306 | 7,772.4 | 406 | 10,312.4 |
207 | 5,257.8 | 307 | 7,797.8 | 407 | 10,337.8 |
208 | 5,283.2 | 308 | 7,823.2 | 408 | 10,363.2 |
209 | 5,308.6 | 309 | 7,848.6 | 409 | 10,388.6 |
210 | 5,334.0 | 310 | 7,874.0 | 410 | 10,414.0 |
211 | 5,359.4 | 311 | 7,899.4 | 411 | 10,439.4 |
212 | 5,384.8 | 312 | 7,924.8 | 412 | 10,464.8 |
213 | 5,410.2 | 313 | 7,950.2 | 413 | 10,490.2 |
214 | 5,435.6 | 314 | 7,975.6 | 414 | 10,515.6 |
215 | 5,461.0 | 315 | 8,001.0 | 415 | 10,541.0 |
216 | 5,486.4 | 316 | 8,026.4 | 416 | 10,566.4 |
217 | 5,511.8 | 317 | 8,051.8 | 417 | 10,591.8 |
218 | 5,537.2 | 318 | 8,077.2 | 418 | 10,617.2 |
219 | 5,562.6 | 319 | 8,102.6 | 419 | 10,642.6 |
220 | 5,588.0 | 320 | 8,128.0 | 420 | 10,668.0 |
221 | 5,613.4 | 321 | 8,153.4 | 421 | 10,693.4 |
222 | 5,638.8 | 322 | 8,178.8 | 422 | 10,718.8 |
223 | 5,664.2 | 323 | 8,204.2 | 423 | 10,744.2 |
224 | 5,689.6 | 324 | 8,229.6 | 424 | 10,769.6 |
225 | 5,715.0 | 325 | 8,255.0 | 425 | 10,795.0 |
Inches | Mm | Inches | Mm | Inches | Mm |
226 | 5,740.4 | 326 | 8,280.4 | 426 | 10,820.4 |
227 | 5,765.8 | 327 | 8,305.8 | 427 | 10,845.8 |
228 | 5,791.2 | 328 | 8,331.2 | 428 | 10,871.2 |
229 | 5,816.6 | 329 | 8,356.6 | 429 | 10,896.6 |
230 | 5,842.0 | 330 | 8,382.0 | 430 | 10,922.0 |
231 | 5,867.4 | 331 | 8,407.4 | 431 | 10,947.4 |
232 | 5,892.8 | 332 | 8,432.8 | 432 | 10,972.8 |
233 | 5,918.2 | 333 | 8,458.2 | 433 | 10,998.2 |
234 | 5,943.6 | 334 | 8,483.6 | 434 | 11,023.6 |
235 | 5,969.0 | 335 | 8,509.0 | 435 | 11,049.0 |
236 | 5,994.4 | 336 | 8,534.4 | 436 | 11,074.4 |
237 | 6,019.8 | 337 | 8,559.8 | 437 | 11,099.8 |
238 | 6,045.2 | 338 | 8,585.2 | 438 | 11,125.2 |
239 | 6,070.6 | 339 | 8,610.6 | 439 | 11,150.6 |
240 | 6,096.0 | 340 | 8,636.0 | 440 | 11,176.0 |
241 | 6,121.4 | 341 | 8,661.4 | 441 | 11,201.4 |
242 | 6,146.8 | 342 | 8,686.8 | 442 | 11,226.8 |
243 | 6,172.2 | 343 | 8,712.2 | 443 | 11,252.2 |
244 | 6,197.6 | 344 | 8,737.6 | 444 | 11,277.6 |
245 | 6,223.0 | 345 | 8,763.0 | 445 | 11,303.0 |
246 | 6,248.4 | 346 | 8,788.4 | 446 | 11,328.4 |
247 | 6,273.8 | 347 | 8,813.8 | 447 | 11,353.8 |
248 | 6,299.2 | 348 | 8,839.2 | 448 | 11,379.2 |
249 | 6,324.6 | 349 | 8,864.6 | 449 | 11,404.6 |
250 | 6,350.0 | 350 | 8,890.0 | 450 | 11,430.0 |
Inches | Mm | Inches | Mm | Inches | Mm |
251 | 6,375.4 | 351 | 8,915.4 | 451 | 11,455.4 |
252 | 6,400.8 | 352 | 8,940.8 | 452 | 11,480.8 |
253 | 6,426.2 | 353 | 8,966.2 | 453 | 11,506.2 |
254 | 6,451.6 | 354 | 8,991.6 | 454 | 11,531.6 |
255 | 6,477.0 | 355 | 9,017.0 | 455 | 11,557.0 |
256 | 6,502.4 | 356 | 9,042.4 | 456 | 11,582.4 |
257 | 6,527.8 | 357 | 9,067.8 | 457 | 11,607.8 |
258 | 6,553.2 | 358 | 9,093.2 | 458 | 11,633.2 |
259 | 6,578.6 | 359 | 9,118.6 | 459 | 11,658.6 |
260 | 6,604.0 | 360 | 9,144.0 | 460 | 11,684.0 |
261 | 6,629.4 | 361 | 9,169.4 | 461 | 11,709.4 |
262 | 6,654.8 | 362 | 9,194.8 | 462 | 11,734.8 |
263 | 6,680.2 | 363 | 9,220.2 | 463 | 11,760.2 |
264 | 6,705.6 | 364 | 9,245.6 | 464 | 11,785.6 |
265 | 6,731.0 | 365 | 9,271.0 | 465 | 11,811.0 |
266 | 6,756.4 | 366 | 9,296.4 | 466 | 11,836.4 |
267 | 6,781.8 | 367 | 9,321.8 | 467 | 11,861.8 |
268 | 6,807.2 | 368 | 9,347.2 | 468 | 11,887.2 |
269 | 6,832.6 | 369 | 9,372.6 | 469 | 11,912.6 |
270 | 6,858.0 | 370 | 9,398.0 | 470 | 11,938.0 |
271 | 6,883.4 | 371 | 9,423.4 | 471 | 11,963.4 |
272 | 6,908.8 | 372 | 9,448.8 | 472 | 11,988.8 |
273 | 6,934.2 | 373 | 9,474.2 | 473 | 12,014.2 |
274 | 6,959.6 | 374 | 9,499.6 | 474 | 12,039.6 |
275 | 6,985.0 | 375 | 9,525.0 | 475 | 12,065.0 |
Inches | Mm | Inches | Mm | Inches | Mm |
276 | 7,010.4 | 376 | 9,550.4 | 476 | 12,090.4 |
277 | 7,035.8 | 377 | 9,575.8 | 477 | 12,115.8 |
278 | 7,061.2 | 378 | 9,601.2 | 478 | 12,141.2 |
279 | 7,086.6 | 379 | 9,626.6 | 479 | 12,166.6 |
280 | 7,112.0 | 380 | 9,652.0 | 480 | 12,192.0 |
281 | 7,137.4 | 381 | 9,677.4 | 481 | 12,217.4 |
282 | 7,162.8 | 382 | 9,702.8 | 482 | 12,242.8 |
283 | 7,188.2 | 383 | 9,728.2 | 483 | 12,268.2 |
284 | 7,213.6 | 384 | 9,753.6 | 484 | 12,293.6 |
285 | 7,239.0 | 385 | 9,779.0 | 485 | 12,319.0 |
286 | 7,264.4 | 386 | 9,804.4 | 486 | 12,344.4 |
287 | 7,289.8 | 387 | 9,829.8 | 487 | 12,369.8 |
288 | 7,315.2 | 388 | 9,855.2 | 488 | 12,395.2 |
289 | 7,340.6 | 389 | 9,880.6 | 489 | 12,420.6 |
290 | 7,366.0 | 390 | 9,906.0 | 490 | 12,446.0 |
291 | 7,391.4 | 391 | 9,931.4 | 491 | 12,471.4 |
292 | 7,416.8 | 392 | 9,956.8 | 492 | 12,496.8 |
293 | 7,442.2 | 393 | 9,982.2 | 493 | 12,522.2 |
294 | 7,467.6 | 394 | 10,007.6 | 494 | 12,547.6 |
295 | 7,493.0 | 395 | 10,033.0 | 495 | 12,573.0 |
296 | 7,518.4 | 396 | 10,058.4 | 496 | 12,598.4 |
297 | 7,543.8 | 397 | 10,083.8 | 497 | 12,623.8 |
298 | 7,569.2 | 398 | 10,109.2 | 498 | 12,649.2 |
299 | 7,594.6 | 399 | 10,134.6 | 499 | 12,674.6 |
300 | 7,620.0 | 400 | 10,160.0 | 500 | 12,700.0 |
Inches | Mm | Inches | Mm | Inches | Mm |
Units of length: inch and millimetre
An inch (in or ″) is a unit of length within the imperial system of units, a system of weights and measures traditionally used throughout the British Empire.
The imperial system was officially replaced by the metric system in almost all countries. Nevertheless, it is still widely used in the United Kingdom, Canada, and some other members of the Commonwealth, as well as in the United States.
1 inch equals exactly 25.4 millimetres or 2.54 centimetres.
A millimetre (mm) is a unit of length within the metric system of units, which in its current form is called the International System of Units (SI).
The base unit of length in SI is the metre. The prefix milli means "one-thousandth", so 1 millimetre equals 0.001 metre or 0.1 centimetre.
1 millimetre is approximately equal to 0.03937 inches.