How to use
- Fill in Size for Papersize.
- To match “ISO A4”, enter Size A4.
- Press Show size. The summary line should be “Papersize: A4 is 210 × 297 mm”.
- Read every line under “Papersize: A4 is 210 × 297 mm” before you copy the Papersize result.
- Press Copy for the whole Papersize result, or Reset to restore “ISO A4”.
- For the second check, “US Letter”, the summary should be “Papersize: Letter is 215.9 × 279.4 mm”.
Formula / how it works
Example “ISO A4” sets Size = A4.
Papersize returns this exact text:
Papersize: A4 is 210 × 297 mm
8.26771654 × 11.69291339 inches.
ISO 216 A sizes: each step halves the sheet, so the short side of An is the long side of A(n+1).
The millimetre pair is the ISO 216 size.
Example “US Letter” sets Size = Letter.
Papersize returns this exact text:
Papersize: Letter is 215.9 × 279.4 mm
8.5 × 11 inches.
US sizes are stored in millimetres from the inch definition (1 inch = 25.4 mm).
Inches come from dividing millimetres by 25.4.
Papersize vocabulary for this page: paper, millimetre, iso, sheet, inch, papersize.
Papersize pass 1 (“US Letter”) prints:
Papersize: Letter is 215.9 × 279.4 mm
8.5 × 11 inches.
US sizes are stored in millimetres from the inch definition (1 inch = 25.4 mm).
The words for this pass are paper, millimetre, iso, sheet, inch, papersize.
Papersize pass 2 (“ISO A4”) prints:
Papersize: A4 is 210 × 297 mm
8.26771654 × 11.69291339 inches.
ISO 216 A sizes: each step halves the sheet, so the short side of An is the long side of A(n+1).
The words for this pass are paper, millimetre, iso, sheet, inch, papersize.
Papersize pass 3 (“US Letter”) prints:
Papersize: Letter is 215.9 × 279.4 mm
8.5 × 11 inches.
US sizes are stored in millimetres from the inch definition (1 inch = 25.4 mm).
The words for this pass are paper, millimetre, iso, sheet, inch, papersize.
Papersize pass 4 (“ISO A4”) prints:
Papersize: A4 is 210 × 297 mm
8.26771654 × 11.69291339 inches.
ISO 216 A sizes: each step halves the sheet, so the short side of An is the long side of A(n+1).
The words for this pass are paper, millimetre, iso, sheet, inch, papersize.
Papersize pass 5 (“US Letter”) prints:
Papersize: Letter is 215.9 × 279.4 mm
8.5 × 11 inches.
US sizes are stored in millimetres from the inch definition (1 inch = 25.4 mm).
The words for this pass are paper, millimetre, iso, sheet, inch, papersize.
Worked examples
ISO A4
Inputs: Size: A4
Set Size A4. Press Show size. The Papersize summary should read “Papersize: A4 is 210 × 297 mm”.
Result: Papersize: A4 is 210 × 297 mm
8.26771654 × 11.69291339 inches.
ISO 216 A sizes: each step halves the sheet, so the short side of An is the long side of A(n+1).
The millimetre pair is the ISO 216 size.
US Letter
Inputs: Size: Letter
Set Size Letter. Press Show size. The Papersize summary should read “Papersize: Letter is 215.9 × 279.4 mm”.
Result: Papersize: Letter is 215.9 × 279.4 mm
8.5 × 11 inches.
US sizes are stored in millimetres from the inch definition (1 inch = 25.4 mm).
Inches come from dividing millimetres by 25.4.
Use cases
- Check “Papersize: A4 is 210 × 297 mm” before trusting a new Papersize input.
- Check “Papersize: Letter is 215.9 × 279.4 mm” as the second Papersize case.
- The millimetre pair is the ISO 216 size.
- Inches come from dividing millimetres by 25.4.
Tips & limitations
- “ISO A4”: The millimetre pair is the ISO 216 size.
- “US Letter”: Inches come from dividing millimetres by 25.4.
- Papersize fields: Size.
- The Papersize summary for the opening example is “Papersize: A4 is 210 × 297 mm”.
FAQ
What does “ISO A4” return?
Papersize summary: “Papersize: A4 is 210 × 297 mm”. Full result: Papersize: A4 is 210 × 297 mm 8.26771654 × 11.69291339 inches. ISO 216 A sizes: each step halves the sheet, so the short side of An is the long side of A(n+1).
What does “US Letter” return?
Papersize summary: “Papersize: Letter is 215.9 × 279.4 mm”. Full result: Papersize: Letter is 215.9 × 279.4 mm 8.5 × 11 inches. US sizes are stored in millimetres from the inch definition (1 inch = 25.4 mm).
Which values produce “Papersize: A4 is 210 × 297 mm”?
Size: A4
Which values produce “Papersize: Letter is 215.9 × 279.4 mm”?
Size: Letter
How is “Papersize: A4 is 210 × 297 mm” different from “Papersize: Letter is 215.9 × 279.4 mm”?
“ISO A4” gives “Papersize: A4 is 210 × 297 mm”. “US Letter” gives “Papersize: Letter is 215.9 × 279.4 mm”.
What does Papersize include in the full first result?
Papersize: A4 is 210 × 297 mm 8.26771654 × 11.69291339 inches. ISO 216 A sizes: each step halves the sheet, so the short side of An is the long side of A(n+1).
Results are calculated from the values you enter. Double-check measurements and allow a margin before buying materials or making decisions.