Dot/millimeters to Dot/inch (DPI)s (dot/mm to dpi)
Free online dot/millimeter to dot/inch (dpi) converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
DIGITAL IMAGE RESOLUTION CONVERTER — INSTANT RESULT
Formula: multiply the dot/millimeter value by 25.4 — i.e. dpi = dot/mm × 25.4
Quick check: 1 dot/mm = 25.4 dpi
Quick check: 1 dot/mm = 25.4 dpi
Dot/millimeters to Dot/inch (DPI)s conversion table
| Dot/millimeters (dot/mm) | Dot/inch (DPI)s (dpi) |
|---|---|
| 1 dot/mm | 25.4 dpi |
| 2 dot/mm | 50.8 dpi |
| 3 dot/mm | 76.2 dpi |
| 4 dot/mm | 101.6 dpi |
| 5 dot/mm | 127 dpi |
| 6 dot/mm | 152.4 dpi |
| 7 dot/mm | 177.8 dpi |
| 8 dot/mm | 203.2 dpi |
| 9 dot/mm | 228.6 dpi |
| 10 dot/mm | 254 dpi |
| 15 dot/mm | 381 dpi |
| 20 dot/mm | 508 dpi |
| 25 dot/mm | 635 dpi |
| 30 dot/mm | 762 dpi |
| 40 dot/mm | 1,016 dpi |
| 50 dot/mm | 1,270 dpi |
| 75 dot/mm | 1,905 dpi |
| 100 dot/mm | 2,540 dpi |
| 250 dot/mm | 6,349.99999999 dpi |
| 500 dot/mm | 12,699.99999999 dpi |
| 1,000 dot/mm | 25,399.99999997 dpi |
How to convert dot/millimeters to dot/inch (dpi)s
To convert dot/millimeters to dot/inch (dpi)s, multiply the amount in dot/millimeters by 25.4. For example, 10 dot/mm = 254 dpi. To convert in the other direction, divide by the same factor, or use the ⇄ swap button above.
Convert image resolution between dots per inch (DPI), dots per millimeter and dots per centimeter — print and scanning units.
Frequently asked questions
How many dot/inch (dpi)s are in one dot/millimeter?
One dot/millimeter is exactly 25.4 dot/inch (dpi)s.
How do I convert dot/mm to dpi?
Multiply the dot/mm value by 25.4 to get dpi. The converter at the top of this page does this automatically and works in both directions.
How much is 100 dot/millimeters in dot/inch (dpi)s?
100 dot/millimeters equals 2,540 dot/inch (dpi)s.