What is the difference between A3 and A4 printing?

A3 paper measures 297x420mm — exactly double the size of A4 (210x297mm). A3 is used when standard A4 cannot accommodate the detail or scale required, such as engineering drawings, architectural plans, large charts, and posters. A3 printing costs more per page (₹2 B&W, ₹5 color) compared to A4 (₹0.35 B&W, ₹1 color) due to the larger paper size and ink coverage.

Can I print engineering drawings and CAD files in A3 format?

Yes, we support A3 printing for engineering drawings and CAD outputs. Export your AutoCAD, SolidWorks, or other CAD files as PDF at A3 size before uploading. Ensure line weights and dimensions are clearly visible in the PDF — we print exactly what your file contains. For best results, use at least 300 DPI when exporting raster images and verify scale accuracy in your PDF viewer.

Is A3 printing suitable for architecture students?

Absolutely. Architecture students frequently need A3 prints for floor plans, elevation drawings, section views, site plans, and design presentations. A3 provides enough detail for most academic submissions. For larger formats like A2 or A1, we recommend checking with your department — many architecture submissions accept A3 for portfolio work and presentation boards.

What paper GSM should I use for A3 prints?

For standard A3 documents, charts, and drawings, 100 GSM uncoated paper works well. For posters or presentation boards, 120 GSM or higher provides a more rigid and professional feel. Engineering drawings and CAD prints are typically fine on 100 GSM. If you need your A3 prints to be handled frequently or displayed on a wall, consider 120 GSM for added durability.

Can I get A3 prints spiral-bound?

Yes, A3 prints can be spiral-bound along the long edge (420mm side), creating a flip-book style presentation that works well for engineering drawing sets, architecture portfolios, and chart collections. This is a popular option for submitting a set of 10-20 A3 drawings as a single bound document. Spiral binding for A3 starts at ₹40.

How should I prepare my files for A3 printing?

Export your document as a PDF with the page size set to A3 (297x420mm). Make sure all content fits within the printable area — leave at least 5mm margins on all sides. For CAD drawings, verify that the scale is correct in the exported PDF. For posters and charts, use high-resolution images (300 DPI minimum) to avoid blurry output. Always preview your PDF at actual size before uploading to catch any formatting issues.

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A3 Printing Online

A3 printing online costs ₹2/page for B&W and ₹5/page for color. Upload your PDF, select A3 format (297x420mm), and get doorstep delivery across 19,000+ pincodes. Ideal for engineering drawings, architecture sheets, posters, charts, and CAD-compatible prints.

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Last updated: 2026-05-27

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Average Rating

500+

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19,000+

Pincodes Served

1 Lakh+

Pages Printed

Pricing

Why Choose A3 Printing Online

Full A3 size (297x420mm)

Engineering drawing support

Architecture sheet printing

Poster and chart printing

CAD-compatible output

Same-day dispatch before 12 PM

A3 Large Format Printing for Students and Professionals

A3 printing (297x420mm) is essential for documents that demand more space than standard A4 can provide. Engineering drawings, architectural plans, technical diagrams, data charts, academic posters, and presentation boards all benefit from the larger canvas that A3 offers. For students at engineering and architecture colleges across India — IITs, NITs, VTU-affiliated colleges, and Anna University — A3 printing is a recurring need throughout their academic career, from first-year drafting assignments to final-year project presentations.

Who Needs A3 Printing

Engineering students are the largest user group for A3 printing. Mechanical, civil, electrical, and electronics engineering programmes require technical drawings, circuit diagrams, and structural plans that lose critical detail when scaled down to A4. Architecture students similarly depend on A3 for floor plans, elevation views, section drawings, and design concept sheets — most architecture courses require A3 submissions as a minimum for studio work and design juries. Design students in graphic design, industrial design, and visual communication programmes use A3 for portfolio pages, mood boards, and presentation layouts. Beyond academia, professionals in construction, surveying, and urban planning regularly need A3 prints for site plans and compliance documents.

Ordering A3 Prints Online

Getting A3 prints through Printster is as simple as ordering standard A4 prints — upload your PDF with the page size set to A3, select your print preferences (B&W at ₹2/page or color at ₹5/page), choose binding if needed, and place your order. For engineering drawing sets, you can upload a multi-page PDF and receive all drawings printed on A3 sheets, optionally spiral-bound along the long edge for easy flipping. All A3 orders qualify for same-day dispatch when placed before 12 PM, with delivery across 19,000+ pincodes in 2-7 days. Whether you need 5 A3 sheets for a weekly assignment or 50 sheets for a final project portfolio, online ordering saves you the trip to a specialized print shop and typically costs 40-60% less than local A3 printing rates.