PDF Orientation Helper
Choose portrait or landscape from page dimensions.
Your inputs
Your inputs and files stay on your device.
Your result
A little input. A useful answer.
Enter your values and run the tool to see your result here.
How to use this tool
- Enter page or print values.
- Calculate locally.
- Review the print-planning result.
About PDF Orientation Helper
Use PDF Orientation Helper locally for PDF layout and print planning. It does not upload or modify PDF files.
Does this tool send my data anywhere?
No. Its calculation or transformation happens on your device.
Using PDF Orientation Helper with the right inputs
Choose portrait or landscape from page dimensions. Start by matching your task to the quantities and options shown below. The definitions of the inputs matter as much as the final number or transformed output; retain the original values so that you can repeat or check the result.
Inputs and options explained
- Page width (mm): Use the measurement and unit named in the field. Do not substitute a diameter for a radius or mix unit scales. The form indicates a minimum of 0.
- Page height (mm): Use the measurement and unit named in the field. Do not substitute a diameter for a radius or mix unit scales. The form indicates a minimum of 0.
Method and interpretation
Width is compared with height. A width greater than height produces Landscape; otherwise the tool produces Portrait. The ratio shown is width divided by height.
Worked example
A 297 mm wide and 210 mm high page is landscape, with a width-to-height ratio of approximately 1.414. Reversing the dimensions gives portrait.
Assumptions and limitations
A square page is labelled Portrait by this tool's comparison rule, although a square has no unique long-edge orientation. The helper does not rotate an existing PDF or change printer settings.
Does the choice depend on the measurement unit?
No, provided width and height use the same unit. Mixing centimetres and millimetres changes the comparison incorrectly.
Before you use the output
- Choose the intended action: Calculate. Re-run the operation after changing an input or mode so that you are checking the updated result.
- Read the result label and any accompanying explanation. Keep the input values or source file with the output so that a later comparison uses the same assumptions.
- If a result looks unexpected, check units, separators and selected options first. Try a smaller example you can verify rather than repeatedly changing several settings at once.
Questions or a result that needs checking?
If you find a discrepancy, report a problem with PDF Orientation Helper. Include a non-sensitive example, the selected options, the result you expected and the result shown. This makes the issue easier to reproduce. See About & privacy for how the site handles tool inputs.