A4 to Letter Converter
Convert standard international A4 page dimensions to US Letter size format securely in your browser—100% private & client-side.
Drag & drop files to convert
or click to browse from your device
How A4 to Letter Conversion Works
Resize and adapt your international PDF layouts in 3 simple steps.
Upload PDFs
Select the A4 size PDF files you want to resize. You can upload multiple files at once.
Scale & Resize
Our browser-based engine automatically scales layout coordinates and adjusts dimensions to standard US Letter.
Download Letter PDFs
Instantly download your converted document or zip archive directly to your local file system.
Why convert A4 to US Letter?
A4 and US Letter sizes differ in height and width. Adapt documents for standard North American printing formats without layout issues.
Proportional Scaling, No Cuts
Page content is scaled dynamically to fit standard US Letter dimensions without cropping margins or text headers.
Batch Files Conversion
Upload multiple PDF files. Convert all of them at once and download them in a single zipped package.
100% Client-Side Privacy
The entire layout mapping runs locally inside your browser cache memory. No files are uploaded to our servers.
Frequently Asked Questions
Common queries regarding client-side PDF document resizing.
Q.Will my document content get cropped?
No. The conversion scales the page content proportionally to fit the Letter page width and height ratios without cutting text or graphics.
Q.Is there a limit on the number of PDFs I can convert?
No. Since conversion tasks run directly on your computer hardware, you can process dozens of files in a single batch.
Q.Does this tool support landscape documents?
Yes. The algorithm automatically detects landscape orientation and adapts scaling factors to match landscape Letter size.
Q.Why should I convert A4 to US Letter format?
If you send an A4 PDF document to printers in standard US or Canada locations, text or layouts near the bottom can be cut off. Converting first resolves this.
How A4 to Letter Converter 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 PDF Editor and PDF Suite utilities.
Upload A4 PDF
Step-by-step interactive processing designed for simple, fast, and high-fidelity execution.
Choose Output Size
Step-by-step interactive processing designed for simple, fast, and high-fidelity execution.
Download Letter PDF
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:
A4 Standard
Full digital precision and optimized performance with zero server-side latency or external data transfers.
US Letter Size
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.
Fit or Fill Options
Full digital precision and optimized performance with zero server-side latency or external data transfers.
Frequently Asked Questions About Page Sizes
Is this A4 to Letter converter free?
Yes. Resize unlimited PDFs with no registration.
What's the difference between A4 and Letter?
A4 is 210x297mm (international), Letter is 8.5x11 inches (US standard).
Does this preserve content layout?
Yes. Auto-scales content to fit the new page size while maintaining proportions.
Do you store PDFs uploaded here?
No. All conversion happens locally with complete privacy.