Pixel per inch to Dot per meter Converter
無料画像解像度換算ツール, DPI、PPI、CMあたりのドット数、MMあたりのピクセルを瞬時に換算
Pixel per inch
- Symbol
- PPI
- System
- Metric/Imperial
- Dimension
- Various
Dot per meter
- Symbol
- dot/m
- System
- Metric/Imperial
- Dimension
- Various
Quick Reference Table
| Pixel per inch | Dot per meter | Dot per meter | Pixel per inch |
|---|---|---|---|
| 1 | 39.3700787402 | 1 | 0.0254 |
| 2 | 78.7401574803 | 2 | 0.0508 |
| 3 | 118.1102362205 | 3 | 0.0762 |
| 5 | 196.8503937008 | 5 | 0.127 |
| 10 | 393.7007874016 | 10 | 0.254 |
| 25 | 984.2519685039 | 25 | 0.635 |
| 50 | 1968.5039370079 | 50 | 1.27 |
| 100 | 3937.0078740157 | 100 | 2.54 |
| 500 | 19685.0393700787 | 500 | 12.7 |
| 1000 | 39370.0787401575 | 1000 | 25.4 |
Conversion Formula
Dot per meter = Pixel per inch × 39.3700787402
Pixel per inch = Dot per meter × 0.0254
Factors are from BIPM SI brochure and NIST SP 811, stored unrounded and computed via a base unit. Reverse factor is 1 ÷ 39.3700787402.
How to convert Pixel per inch to Dot per meter
Multiply the value in pixel per inch by 39.3700787402 to get dot per meter. For example, 5 Pixel per inch = 196.8503937008 Dot per meter. All results in the image resolution converter update instantly as you type, so you can see every unit at once without manual math.
Common mistakes
Do not round the factor to 39.3 too early — keep full precision until the final display. For image resolution, always verify critical calculations (medicine, engineering) with a second source.
FAQ
- How many Dot per meter in 1 Pixel per inch?
- 1 Pixel per inch = 39.3700787402 Dot per meter.
- How many Pixel per inch in 1 Dot per meter?
- 1 Dot per meter = 0.0254 Pixel per inch.
- What is the source?
- BIPM/NIST via OmniConverter base-unit engine. Source table and formula above are exact.
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