How to Convert DPI to PPMM
To convert dpi to ppmm, divide the value by 25.4.
The Formula
PPMM = DPI ÷ 25.4
Key Fact
1 pixels per millimeter = 25.4 dpi
Tip: To convert ppmm back to dpi, multiply by 25.4.
DPI to PPMM
Convert dpi (DPI) to ppmm (PPMM) with formulas, examples, and conversion tables.
DPI
PPMM
1 DPI = 0.03937 PPMM
Full precision:0.03937 PPMM
Step-by-Step Solution
To convert 1 dpi to ppmm, we divide by 25.4 because one pixels per millimeter equals exactly 25.4 dpi.
1 pixels per millimeter = 25.4 dpi
Since there are 25.4 dpi in every pixels per millimeter, we divide our value by this factor:
1 ÷ 25.4 = 0.03937 ppmm
So 1 dpi = 0.03937 ppmm.
Quick check: 0.03937 × 25.4 = 1 dpi
Example Conversions
Example 1: 1 DPI = 0.03937 PPMM
1 ÷ 25.4 = 0.03937
1 ÷ 25.4 = 0.03937
Example 2: 5 DPI = 0.19685 PPMM
5 ÷ 25.4 = 0.19685
5 ÷ 25.4 = 0.19685
Example 3: 10 DPI = 0.3937 PPMM
10 ÷ 25.4 = 0.3937
10 ÷ 25.4 = 0.3937
DPI to PPMM Table
| DPI | PPMM |
|---|---|
| 1 DPI | 0.03937 PPMM |
| 2 DPI | 0.07874 PPMM |
| 5 DPI | 0.19685 PPMM |
| 10 DPI | 0.3937 PPMM |
| 20 DPI | 0.7874 PPMM |
| 25 DPI | 0.98425 PPMM |
| 50 DPI | 1.9685 PPMM |
| 100 DPI | 3.937 PPMM |
| 250 DPI | 9.8425 PPMM |
| 500 DPI | 19.685 PPMM |
| 1000 DPI | 39.3701 PPMM |
1 Dots per Inch in Other Units
| Unit | 1 DPI = |
|---|---|
| DPI to PPI Converter | 1 PPI |
| DPI to PPCM | 0.3937 PPCM |
| DPI to DPCM | 0.3937 DPCM |
| DPI to PPMM | 0.03937 PPMM |