Print Size From Image Resolution
Convert independently measured raster width and height to print inches at explicit target PPI. Does not decode images, infer their resolution metadata or guarantee print quality.
Description
A raster’s print dimensions follow from its pixel dimensions and a chosen pixels-per-inch density.
A raster’s print dimensions follow from its pixel dimensions and a chosen pixels-per-inch density.1
Both axes matter when planning a print.
When to use Print Size From Image Resolution
Use this tool when you need to reproduce the stated calculation from measured records or independently selected model inputs. Establish the font version, feature, layout, physical or CSS units, and matched reference basis needed for this calculation.
How to use Print Size From Image Resolution and understand its results
- Establish the font version, feature, layout, physical or CSS units, and matched reference basis needed for this calculation.
- Enter observedPixelWidth, observedPixelHeight, callerPixelsPerPrintInch, following the field table and rules below, then run the tool.
- Read conditionalPrintWidthInches, conditionalPrintHeightInches. Use the output meanings below to interpret units, signs, flags, and any nested result fields.
- Correct reported input issues and run again. For a successful result, check the stated evidence coverage and assumptions before using it in your review.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedPixelWidth | Observed pixel width | number | Required |
| observedPixelHeight | Observed pixel height | number | Required |
| callerPixelsPerPrintInch | Caller pixels per print inch | number | Required |
Enter integer pixel width and height from one to one million and a positive target PPI. Divide each pixel dimension by PPI to return width and height in inches. Image metadata and printer quality are not inspected.
printInches=pixels/PPI Symbols follow the input and output meanings and the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| conditionalPrintWidthInches | Conditional print width inches | number |
| conditionalPrintHeightInches | Conditional print height inches | number |
{
"input": {
"observedPixelWidth": 1200,
"observedPixelHeight": 900,
"callerPixelsPerPrintInch": 300
},
"output": {
"conditionalPrintWidthInches": 4,
"conditionalPrintHeightInches": 3
}
}Limitations and assumptions
The calculation uses declared units and font or layout assumptions. It does not shape glyphs, lay out actual pages, or certify accessibility or print quality.
Missing required fields, unknown fields, wrong types, and violated calculation rules are input issues. Numeric values must be finite; nonfinite results are rejected.
Alternative or Complementary methods
For a related review, use Image Dimensions For Print Size: A planned print size and PPI specify an exact raster extent that may be fractional. Rounding each dimension upward ensures the integer raster reaches the requested extent. For a complementary step, use Screen PPI From Diagonal Resolution: Physical screen PPI measures raster pixels per physical inch. It is distinct from a CSS pixel scale or the ratio between device and CSS pixels.
References
-
Print Size From Image Resolution — tool.io
Similar or alternative tools
- Image Dimensions For Print Size
A planned print size and PPI specify an exact raster extent that may be fractional. Rounding each dimension upward ensures the integer raster reaches the requested extent.
- Screen PPI From Diagonal Resolution
Physical screen PPI measures raster pixels per physical inch. It is distinct from a CSS pixel scale or the ratio between device and CSS pixels.