A3 to A5 Conversion
A5 is a quarter of A3. Folding A3 in half gives A4, and folding A4 in half gives A5 — so A3 to A5 is a 4:1 reduction.
A3 (Original)
A3
297 × 420 mm
11.7 × 16.5 in
11.7 × 16.5 in
A5 (Result)
A5
148 × 210 mm
5.8 × 8.3 in
5.8 × 8.3 in
📊 A3 vs A5 Quick Facts:
• Ratio: 4 A5 sheets = 1 A3 sheet (2 × 2 grid)
• Fold: A3 → A4 → A5 (fold twice)
• Scale Factor: 50% of each dimension
• Uses: A5 for notebooks, flyers, invitations
• Ratio: 4 A5 sheets = 1 A3 sheet (2 × 2 grid)
• Fold: A3 → A4 → A5 (fold twice)
• Scale Factor: 50% of each dimension
• Uses: A5 for notebooks, flyers, invitations
📏 Complete Dimensions
| Unit | A3 | A5 |
|---|---|---|
| Millimetres | 297 × 420 mm | 148 × 210 mm |
| Centimetres | 29.7 × 42.0 cm | 14.8 × 21.0 cm |
| Inches | 11.7 × 16.5 in | 5.8 × 8.3 in |
| Pixels @ 72 DPI | 842 × 1191 px | 420 × 595 px |
| Pixels @ 300 DPI | 3508 × 4961 px | 1748 × 2480 px |
| Pixels @ 600 DPI | 7016 × 9921 px | 3508 × 4961 px |
🎨 Common Uses
- A3: Posters, spreadsheets, diagrams, architectural drawings
- A5: Notebooks, flyers, invitations, booklets, greeting cards
🔁 Related Conversions
- A3 to A2 – Double size
- A3 to A4 – Half size
- A3 to Pixels – Digital conversion
- A5 to A4 – Double size
- A5 to A6 – Half size
❓ Frequently Asked Questions
How many A5 fit in A3? Exactly four A5 sheets fit into one A3 sheet in a 2 × 2 grid.
How do I convert A3 to A5? Fold twice, or scale each dimension to 50% when printing.