Inches to micrometres converter
Micrometres (µm)
1 inch = 25,400 micrometres
How to convert inches to micrometres
µm = in × 25400
Multiply the number of inches by 25400 to get micrometres. Going the other way, divide by 25400 (or multiply by 0.0000393700787402).
One inch is exactly defined as 25400 micrometres (to 12 significant figures), and one micrometre is 0.0000393700787402 inches.
Worked examples
- Convert 5 inches: 5 × 25400 = 127,000 127,000 micrometres.
- Convert 12.5 inches: 12.5 × 25400 = 317,500 317,500 micrometres.
- Convert 250 inches: 250 × 25400 = 6,350,000 6,350,000 micrometres.
Quick-reference table
| in | µm |
|---|---|
| 1 | 25,400 |
| 2 | 50,800 |
| 3 | 76,200 |
| 5 | 127,000 |
| 10 | 254,000 |
| 15 | 381,000 |
| 20 | 508,000 |
| 25 | 635,000 |
| 50 | 1,270,000 |
| 75 | 1,905,000 |
| 100 | 2,540,000 |
| 1,000 | 25,400,000 |
| µm | in |
|---|---|
| 1 | 0.00003937007874 |
| 2 | 0.00007874015748 |
| 3 | 0.0001181102362 |
| 5 | 0.0001968503937 |
| 10 | 0.0003937007874 |
| 15 | 0.0005905511811 |
| 20 | 0.0007874015748 |
| 25 | 0.0009842519685 |
| 50 | 0.001968503937 |
| 75 | 0.002952755906 |
| 100 | 0.003937007874 |
| 1,000 | 0.03937007874 |
Related conversions
Frequently asked questions
How many micrometres are in 1 inch?
1 inch equals 25,400 micrometres.
What is the formula to convert inches to micrometres?
Use µm = in × 25400. Multiply the number of inches by 25400 to get micrometres. Going the other way, divide by 25400 (or multiply by 0.0000393700787402).
What is 100 inches in micrometres?
100 inches is 2,540,000 micrometres.