Guides

Print, pixels, megapixels and PPI

Megapixels describe area, not print size. Clean print sizing needs pixel edges, PPI and target medium.

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Unit console

Convertir des unités avec formule, contexte et précision

UnitCloud est un laboratoire de mesure local pour le quotidien, la technique, l'informatique, l'énergie, la mobilité et le design.

Résolution d'image

Fast path

Pixel count and print density are different. Print sizes also need width, height and ppi.

Megapixel en Pixel

Search and practice paths

Search and practice paths

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Factor origin

Factors come from the stored source family and are not derived from rounded display values.

Rounding rule

UnitCloud keeps calculating with stored factors and rounds only the displayed output by selected precision.

When not to use

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.

Citation

Citation note: UnitCloud, conversion with formula, sources current as of May 2026. Résolution d'image. Source basis: NIST Metric SI Prefixes.

Common questions

Why are megapixels alone not enough?

Megapixels describe area, not print size. Clean print sizing needs pixel edges, PPI and target medium.

What is the difference between px and PPI?

Megapixels describe area, not print size. Clean print sizing needs pixel edges, PPI and target medium.

What is the factor for Megapixel en Pixel?

1 MP = 1 000 000 px

Which formula does Megapixel en Pixel use?

1 MP = 1,000,000 px. Then the value is converted through the base unit px into Pixel.