What size is A4 copy paper?
A4 copy paper measures 210 × 297 mm (8.27 × 11.69 inches). It is the international standard for documents and printing, primarily used globally as the equivalent to North American Letter size (8.5 × 11 inches). Standard weights range from 70gsm to 105gsm, and it works with inkjet, laser, and copying devices.
- The Aspect Ratio: Like all sizes in the international ISO 216 standard, A4 paper has a unique aspect ratio of 1:√2 (approximately 1:1.4142). This exact mathematical ratio means if you fold an A4 sheet perfectly in half across its shortest side, you get two perfectly scaled A5 sheets.
- A4 vs. US Letter Size: A4 paper is the global corporate standard everywhere outside of North America. It is taller and narrower than standard North American US Letter paper, which measures 8.5 inches x 11 inches (216 mm x 279 mm).
Types of A4 Copy Paper
copy paper 5 reams
Features of A4 Copy Paper
- Smooth Surface: Velvety texture that ensures excellent toner transfer and vivid color reproduction.
- High Brightness: Enhances contrast, making black text appear sharper and colored graphics pop.
- Jam-Free Printing: Precision-cut edges and optimal stiffness prevent the paper from catching or curling in the machine.
- Low Dust: Specially treated to minimize paper lint, which protects your printer's internal mechanisms, extends equipment lifespan.
- Opacity: Ensures minimal show-through, allowing you to use both sides of the sheet without the text bleeding into the background.
- Double-Sided Printing: Complements opacity and paper weight, making it perfect for eco-friendly.
Why Choose Our A4 Copy Paper?
- GSM & Thickness: Uniform grammage and carefully calibrated thickness ensure flawless duplex printing (two-sided) with no image show-through.
- Cutting & Smooth Feeding: Precision-cut edges and a smooth, low-dust surface prevent static electricity, paper jams, and double-feeds in high-speed copiers.
- High-Speed Copier: Engineered for rigorous, high-volume production machines and commercial laser or inkjet printers.
- Export-Ready Packaging: Reams are wrapped in moisture-proof material and securely packed in durable, export-grade cartons and pallets to survive long-haul international transit.
- Custom Packaging:Â You can request custom brand logos and ream designs depending on minimum order quantities.
- Flexible Specifications: Available in multiple international sizes (A4, A3, Letter, Legal) and standard weights (70 GSM, 75 GSM, and 80 GSM) tailored to diverse regional markets.
70gsm vs 75gsm vs 80gsm A4 Copy Paper
GSM stands for "grams per square meter," measuring the density of the paper. The higher the number, the heavier and thicker the sheet. 70gsm is an economical, lightweight choice ideal for drafts; 75gsm offers a middle-ground balance; 80gsm is the standard, opaque choice for everyday professional documents.
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Custom A4 Copy Paper OEM Service
Custom Ream Wrappers
Tailored, moisture-proof wrapping paper designed with your specific brand, colors, logo.
Carton Printing
Master shipping cartons can be printed with your brand name, and corporate identity.
GSM Options
Choose your preferred paper weight, with standard wholesale weights generally ranging from 70 g/m2, 75 g/m2, and 80 g/m2.
Brightness
Custom brightness options can be produced, typically ranging from 100% to 110% ISO brightness for high-contrast, professional document printing.
Packing Quantities
Reams can be customized to contain standard amounts (like 500 sheets) or adapted to smaller localized distribution requirements (such as 100 or 250 sheets per pack).
A4 Copy Paper Packaging Options
- 500 sheets per ream: The industry-standard count for a single unit (packet) of cut paper.
- 5 & 10 reams per carton: The two most common case quantities. A standard 5-ream carton is frequently used for heavier paper stocks (24lb or 11″ x 17″), while a 10-ream carton is the standard bale/case for 20lb letter-size copy paper.
- Color wrapper packaging: Premium wrappers, often brightly colored, designed for shelf appeal and moisture protection.
- Neutral packaging: Generic, unbranded wrapping and shipping cartons typically used for generic store brands, blind-shipping, or wholesale orders.
- Private label packaging: Custom wrapper and box designs featuring your company’s own branding, logos, and product information.
- Carton logo printing: Custom flexographic or offset printing directly on the exterior of the master shipping carton to match your brand identity.
- Pallet packing: Cartons stacked, wrapped, and secured on shipping pallets for safe bulk transport via freight.
- Container loading support: Professional coordination and supervision to safely pack and secure pallets (or floor-loaded cartons) into 20ft or 40ft shipping containers for international export.
A4 Copy Paper Specifications
| Specification | Standard Details | Description |
|---|---|---|
| Size | 210 × 297 mm | International standard for A4. Close to U.S. Letter (8.5″ x 11″), but slightly narrower and longer. |
| GSM | 80 g/m² | Standard office weight. Lightweight drafts often use 70-75 gsm; premium/double-sided prints use 90-105 gsm. |
| Brightness | 92 – 96% ISO (or 100% – 104% CIE) | Measures light reflectance. Higher numbers indicate higher contrast and whiter paper for professional-looking documents. |
| Whiteness | CIE 146 – 167 | The standard CIE scale measures the tint of the paper. Standard premium white paper falls between CIE 150 and 167. |
| Sheet Count | 500 sheets per ream | The global industry standard for a single ream. |
| Ream Packing | Moisture-proof wrapper | Usually a polyethylene (PE) wrapper with a glossy paper exterior to protect the paper from humidity and moisture. |
| Carton Packing | 5 reams/carton | The standard shipping unit. Each carton holds 2,500 sheets and weighs roughly 12.5 kg (27.5 lbs). |
| Loading Quantity | 1,500 – 1,600 cartons | A standard 20-foot container (TEU) holds about 7,800 to 8,000 reams (1,500 to 1,600 cartons). |
A4 Copy Paper for Different Applications

Office printing

Stationery wholesalers

Copy shops

Supermarkets and retail stores
A4 Copy Paper FAQ
A4 copy paper measures 210 × 297 mm, or 8.27 × 11.69 inches. It is the standard paper size used for office printing, copying, school documents, and business paperwork in many countries.
80gsm is commonly preferred for good print quality, smooth feeding, and double-sided printing. 70gsm is often used for cost-saving daily printing, while 75gsm offers a balance between price and performance.
70gsm A4 paper is lighter and usually more economical. 80gsm A4 paper is thicker, has better opacity, feels more premium, and is usually better for double-sided printing and formal documents.
Yes. 70gsm paper can be used for daily office printing and copying. It is suitable for high-volume use, but it may feel thinner and may show more print-through than 80gsm paper.
Yes. 80gsm A4 paper is generally better for double-sided printing because it has higher thickness and opacity than 70gsm paper, which helps reduce show-through.
One standard ream of A4 copy paper usually contains 500 sheets. Some markets may also use special pack sizes, but 500 sheets per ream is the most common format.
Yes. Standard A4 copy paper can be used in laser printers, inkjet printers, copiers, and fax machines. For better results, the paper should have stable GSM, smooth surface, and proper moisture control.
For general office use, A4 copy paper with 92% to 100% brightness is commonly used. Higher brightness makes printed text and images look clearer and sharper.



