North America
- The most commonly used paper size in the United States and Canada is Letter size (8.5 inches by 11 inches)
- Legal (8.5 inches by 14 inches)
- Folio (8.5 inches by 13 inches)
- Ledger (11 inches by 17 inches)
- Tabloid (11 inches by 17 inches folded in half to 8.5 inches by 11 inches)
Europe
- The most commonly used paper size in most of Europe is A4 (210 millimetres by 297 millimetres)
- A3 (297 millimetres by 420 millimetres)
- A2 (420 millimetres by 594 millimetres)
- A1 (594 millimetres by 841 millimetres)
- A0 (841 millimetres by 1189 millimetres)
Other regions
- In Japan, the most commonly used paper size is B5 (182 millimetres by 257 millimetres)
- In China, the most commonly used paper size is A4 (210 millimetres by 297 millimetres)
- In India, the most commonly used paper size is A4 (210 millimetres by 297 millimetres)