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Quick calculator · Paper Size Tools
A-Series Scale Calculator
Calculate the linear scale change between ISO A-series sizes.
Reviewed 2026-08-18Free · no account
Quick calculator
Enter your job values
Use the real values from your job. Optional fields can stay blank; zero should only be used when the value genuinely does not apply.
Answer
Your result will appear here
2 required values are still missing.
What the result is useful for
A-Series Scale Calculator helps translate a physical sheet specification into digital artwork dimensions or comparable geometry without relying on a memorized pixel size that may assume the wrong resolution.
How the calculation works
Successive A-series sizes change linear dimensions by √2 while preserving the 1:√2 aspect ratio.
What this calculator cannot know
The result is deterministic from the values entered, but production constraints that are not represented by an input can change the practical decision.
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