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Megapixel to Gigapixel

Exact answer: 1 MP = 0.001 GP (exact – SI decimal prefix)

Megapixel and Gigapixel both belong to the Image resolution family. The difference is a decimal prefix, so the factor is a clean power of ten. Image resolution determines print size, storage requirement and file size.

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From100 MP
Result0.1 GP
Factor1 MP = 0.001 GP
Source basisNIST Metric SI Prefixes

Examples

01100 MP = 0.1 GP

Example value from the reference table. Internal calculation uses stored factors; display output is rounded.

02Common mistake

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

03Base unit: px

1 MP = 1000000 px. Then the value is converted through the base unit px into Gigapixel.

Table

Megapixel to Gigapixel
MegapixelGigapixel
1000.1
5000.5
1,0001
2,0002
5,0005
10,00010

Formula

1 MP = 1000000 px. Then the value is converted through the base unit px into Gigapixel.

Sources

NIST Metric SI PrefixesDecimal SI prefix names and factors.

Related conversions

Megapixel to PixelMP → pxImage resolutionPixel to Megapixelpx → MPImage resolutionGigapixel to MegapixelGP → MPImage resolutionPixel to Kilopixelpx → kpxImage resolution

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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 reviewed: September 2026. Image resolution. Source basis: NIST Metric SI Prefixes.

Common questions

What is the factor for Megapixel to Gigapixel?

1 MP = 0.001 GP

Which formula does Megapixel to Gigapixel use?

1 MP = 1000000 px. Then the value is converted through the base unit px into Gigapixel.

What is the most common mistake?

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

When should I verify the result?

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