Pixel Calculator
Convert between pixels, centimeters and DPI. For image editing and print preparation. Step-by-step explanation, free and no registration required.
Result
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Common resolutions
HD: 1280 × 720
Full HD: 1920 × 1080
2K: 2560 × 1440
4K UHD: 3840 × 2160
Instagram: 1080 × 1080
A4 (300 DPI): 2480 × 3508
Note: These calculations are for informational purposes only and do not replace professional tax or financial advice. All information without guarantee.
Frequently Asked Questions
What is the relationship between pixels and physical size?
The physical size of a pixel depends on the screen resolution and display size. PPI (pixels per inch) defines the density. A 1920x1080 display at 24 inches has about 92 PPI.
What resolution do I need for printing?
For high-quality prints, 300 DPI (dots per inch) is standard. A 10x15 cm photo at 300 DPI needs about 1,181 x 1,772 pixels. For posters viewed from distance, 150 DPI may suffice.
What is the Pixel Calculator?
The pixel calculator converts between pixels, centimetres, inches and points at various screen resolutions.
How does the Pixel Calculator work?
Enter the size in pixels (or cm/inches) and the resolution (DPI/PPI). The calculator computes the physical size. Useful for print preparation, web design and image editing.
Key Data and Facts
Standard screen resolution: 72-96 PPI. Print quality: 300 DPI. Conversion: pixels = cm * DPI / 2.54. 1 inch = 2.54 cm = 72 points (pt).
Step-by-Step Guide
How to use den Pixel-Rechner step by step: 1. Eingabewert choose -- Pixel, Zentimeter, Zoll oder Punkt (pt). 2. Aufloesung angeben -- fuer Bildschirmdarstellung typisch 72-96 PPI (Pixel per Inch), fuer Druck 300 DPI oder hoeher. 3. Wert enter und Ergebnis ablesen. Die Kernformel lautet: Pixel = (cm / 2,54) * DPI. Umgekehrt: cm = (Pixel / DPI) * 2,54. 4. Anwendung Druckvorbereitung: Ein Foto mit 3.000 x 2.000 Pixel bei 300 DPI ergibt einen Druck von 25,4 x 16,9 cm. 5. Anwendung Webdesign: Bei 96 PPI entsprechen 1.920 Pixel einer Bildschirmbreite von ca. 50,8 cm (20 Zoll). 6. Retina-Displays beachten: Apple-Geraete verwenden 2x oder 3x Pixeldichte. Ein 100 x 100 CSS-Pixel grosses Bild sollte als 200 x 200 oder 300 x 300 Pixel exportiert werden. Tipp: Fuer scharfen Druck mindestens 300 DPI verwenden, fuer Plakate reichen oft 150 DPI.
Calculation Example
Bild 1.200 x 800 Pixel bei 300 DPI: Druckgroesse = (1200/300)*2,54 x (800/300)*2,54 = 10,16 x 6,77 cm.
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