Digital Image Resolution Converter
Image resolution describes how densely pixels or printed dots are packed. Pixels per inch (PPI) describes digital images and screens; dots per inch (DPI) describes printers. An inch is 2.54 cm, so 300 PPI is about 118 pixels per centimetre.
1 Pixels/Inch (PPI) = 0.3937007874 Pixels/Centimeter
How to convert Pixels/Inch (PPI) to Pixels/Centimeter
One Pixels/Inch (PPI) equals 0.3937007874 Pixels/Centimeter, so multiply any value in PPI by 0.3937007874 to get PX/cm. To convert back, divide by 0.3937007874 — or multiply by 2.54.
PX/cm = PPI × 0.3937007874
Example: 25 PPI × 0.3937007874 = 9.842519685 PX/cm.
Pixels/Inch (PPI) to Pixels/Centimeter table
| Pixels/Inch (PPI) (PPI) | Pixels/Centimeter (PX/cm) |
|---|---|
| 1 | 0.3937007874 |
| 2 | 0.7874015748 |
| 3 | 1.181102362 |
| 4 | 1.57480315 |
| 5 | 1.968503937 |
| 10 | 3.937007874 |
| 15 | 5.905511811 |
| 20 | 7.874015748 |
| 25 | 9.842519685 |
| 50 | 19.68503937 |
| 75 | 29.52755906 |
| 100 | 39.37007874 |
| 250 | 98.42519685 |
| 500 | 196.8503937 |
| 1,000 | 393.7007874 |
Pixels/Centimeter to Pixels/Inch (PPI) table
| Pixels/Centimeter (PX/cm) | Pixels/Inch (PPI) (PPI) |
|---|---|
| 1 | 2.54 |
| 2 | 5.08 |
| 3 | 7.62 |
| 4 | 10.16 |
| 5 | 12.7 |
| 10 | 25.4 |
| 15 | 38.1 |
| 20 | 50.8 |
| 25 | 63.5 |
| 50 | 127 |
| 75 | 190.5 |
| 100 | 254 |
| 250 | 635 |
| 500 | 1,270 |
| 1,000 | 2,540 |
Digital Image Resolution units at a glance
All 7 units this converter supports, each expressed in Pixels/Inch (PPI) (PPI) and the other way round.
| Unit | Symbol | 1 unit in PPI | 1 PPI in unit |
|---|---|---|---|
| Pixels/Inch (PPI) | PPI | 1 | 1 |
| Dots/Inch (DPI) | DPI | 1 | 1 |
| Pixels/Centimeter | PX/cm | 2.54 | 0.3937007874 |
| Pixels/Millimeter | PX/mm | 25.4 | 0.03937007874 |
| Dots/Centimeter | DP/cm | 2.54 | 0.3937007874 |
| Dots/Millimeter | DP/mm | 25.4 | 0.03937007874 |
| Pixels/Meter | PX/m | 39.37007874 | 0.0254 |
Where digital image resolution conversions are used
Preparing images for print (300 DPI is a common standard), comparing screen sharpness, and scanning documents.
Frequently asked questions
What is 1 Pixels/Inch (PPI) in Pixels/Centimeter?
1 Pixels/Inch (PPI) (PPI) is 0.3937007874 Pixels/Centimeter (PX/cm).
What is 1 Pixels/Centimeter in Pixels/Inch (PPI)?
1 Pixels/Centimeter (PX/cm) is 2.54 Pixels/Inch (PPI) (PPI).
How do I convert Pixels/Inch (PPI) to Pixels/Centimeter?
Multiply the value in Pixels/Inch (PPI) by 0.3937007874. For example, 5 PPI × 0.3937007874 = 1.968503937 PX/cm. To go the other way, divide by 0.3937007874.
How many units does the digital image resolution converter support?
It converts between 7 units: Pixels/Inch (PPI), Dots/Inch (DPI), Pixels/Centimeter, Pixels/Millimeter, Dots/Centimeter, Dots/Millimeter, Pixels/Meter.
More Light & Optics converters
- Illuminance (Illumination) ConverterLight illuminance / illumination conversions (lux, foot-candle, phot)
- Luminance ConverterLuminance conversions (nit, stilb, lambert, foot-lambert)
- Luminous Intensity ConverterLuminous intensity conversions (candela, candlepower)
- Frequency-Wavelength ConverterConvert between electromagnetic frequency and wavelength (Hz ↔ nm)
Figures on this page are calculated with the same conversion factors as the converter above and shown to up to 10 significant figures. See our disclaimer before relying on a result in a professional or safety-critical context.