Letter to A4 ConverterNEW
Convert US Letter size PDF document dimensions to standard international A4 format.
Drag & drop files to convert
or click to browse from your device
How Letter to A4 Scaling Works
Resize layout bounding boxes automatically in 3 steps.
Upload PDF
Select the US Letter size PDF files. Multiple files will be queued.
Re-scale Layout
The client-side engine calculates scaling factors to fit standard international A4 dimensions.
Download & Print
The converted A4 files are compiled in memory and downloaded instantly.
Accurate Dimension Conversions
Optimize documents for international printing standards by re-dimensioning media templates.
Proportional Content Scaling
Intelligent vectors and stream scaling ensure text characters and images stay sharp.
100% In-Browser Security
All calculations are computed client-side. Your legal or personal files are safe.
Cleans Layout Bounding Boxes
Removes old CropBoxes, BleedBoxes, and ArtBoxes automatically to prevent layout cropping issues.
Frequently Asked Questions
Answers to standard paper size scaling questions.
Q.What is the difference between US Letter and A4?
US Letter is 8.5 x 11 inches (215.9 x 279.4 mm), commonly used in North America. A4 is 210 x 297 mm, the standard international paper size.
Q.Will my text or images stretch or look warped?
Our engine scales the page content proportionally to fit the target A4 canvas, keeping your layout intact.
Q.Can I convert multiple files at once?
Yes. You can select multiple PDF files to batch convert and download them grouped in a single ZIP archive.
Q.Is this conversion secure?
Yes. No data is sent to external servers. The file dimensions and offsets are modified locally on your computer.
How Letter to A4 Works
Our high-performance online utility runs entirely client-side, processing your files securely and instantly inside your web browser. For related functions, you can also use our A4 to Letter and PDF Editor utilities.
Upload PDF
Step-by-step interactive processing designed for simple, fast, and high-fidelity execution.
Choose Target Size
Step-by-step interactive processing designed for simple, fast, and high-fidelity execution.
Scale Layout
Step-by-step interactive processing designed for simple, fast, and high-fidelity execution.
Page Size Standards
Designed for professional results, privacy, and maximum compatibility across all modern desktop and mobile browsers:
US Letter
Full digital precision and optimized performance with zero server-side latency or external data transfers.
International A4
Full digital precision and optimized performance with zero server-side latency or external data transfers.
Auto Scaling
Full digital precision and optimized performance with zero server-side latency or external data transfers.
Preserve Content
Full digital precision and optimized performance with zero server-side latency or external data transfers.