A4 paper is the standard paper size commonly used for printing, photocopying, business documents, schoolwork and official records in Nigeria and many other countries.

A4 paper measures 210 × 297 mm (21 × 29.7 cm or 8.27 × 11.69 inches). It is part of the international ISO 216 paper-size system and is widely supported by printers, photocopiers and other office equipment.

The term A4 refers to the dimensions of the sheet, while GSM describes the paper’s weight. A4 paper is available in different GSM options, with 70 GSM, 75 GSM and 80 GSM commonly used for different printing requirements.

In this guide, we explain what A4 paper is, its dimensions, common uses, GSM options, how to choose the right paper for different purposes, and other things to consider when printing or photocopying.

What Is A4 Paper?

A4 is an internationally standardized paper size measuring 210 × 297 mm. It is commonly used for everyday documents such as:

• Business letters
• Reports and proposals
• Forms and applications
• Invoices and records
• School assignments and worksheets
• Administrative documents
• Training materials
• General printing and photocopying

A4 paper is widely used for office documents, printing and photocopying. If you’re looking for A4 paper for these everyday requirements, you can view our available A4 paper options here.

Because A4 is a standardized size, it is supported by most office printers, photocopiers and document-processing systems.

What Is the Size of A4 Paper?

The standard dimensions of A4 paper are:

• 210 × 297 millimetres (mm)
• 21 × 29.7 centimetres (cm)
• 8.27 × 11.69 inches

A4 paper can be used in either portrait or landscape orientation depending on the document you’re creating.

The 210 × 297 mm measurement actually describes the physical size of the sheet. It does not describe the paper’s thickness or weight. Those characteristics are commonly indicated using GSM.

What Does GSM Mean in A4 Paper?

If you’ve been wondering what it means, GSM stands for grams per square metre. It is a measurement used to describe the weight of paper.

Generally, a higher GSM indicates a heavier sheet of paper, although GSM does not by itself tell you everything about a paper’s thickness, stiffness or overall quality but it gives you an idea about what to expect.

For example:

• 70 GSM is lighter than 75 GSM
• 75 GSM is lighter than 80 GSM
• 80 GSM has a heavier feel than 70 GSM

The best A4 Paper GSM depends on how the paper will be used, the type of document being printed and the requirements of the printer or photocopier.

Common A4 Paper GSM Options

A4 paper is commonly available in several GSM options. Among the options used for everyday printing in Nigeria are 70 GSM, 75 GSM and 80 GSM which we already mentioned briefly. Let’s explain them a bit more.

70 GSM A4 Paper

70 GSM paper is a lighter option that can be used for high-volume everyday printing where lower paper weight or cost efficiency is important.

70 GSM A4 Paper is commonly used to print:

• Internal office documents
• Draft printing
• Routine administrative documents
• High-volume everyday printing
• Documents where a lighter sheet is appropriate

75 GSM A4 Paper

75 GSM provides a balance between paper weight and everyday printing requirements. It is a very popular choice preferred by users. Most of our clients use 75 GSM A4 Paper for:

• General office printing
• Business correspondence
• Reports
• Administrative documents
• School and educational materials
• Everyday photocopying

80 GSM A4 Paper

80 GSM is the heavier paper option that can provide a more substantial feel for finished printed works. Most of our customers prefer to use it for documents where presentation and opacity are important.

The 80GSM A4 Paper is commonly used for:

• Business reports
• Formal documents
• Presentations
• Double-sided documents
• Documents where a heavier paper feel is preferred

70 GSM vs 75 GSM vs 80 GSM: Which Should You Choose?

We always tell clients, the right GSM option depends on the type and volume of printing you plan to do. In a nutshell, here’s a table that gives you an overview of the specific GSMs and what they are typically used for:

For regular office printing, 70 GSM or 75 GSM may be appropriate depending on the printer you use, document and preference.

For documents where a heavier feel or greater opacity is preferred, 80 GSM is often considered be a better choice for that purpose.

PS: Before choosing the best A4 Paper GSM option, it is also important that you take into account the printer or photocopier manufacturer’s recommended paper specifications.

What Is A4 Paper Used For?

A4 is one of the most commonly used paper sizes for everyday documents, in most countries, including Nigeria.

Typical uses include:

Business and Office Documents

Businesses use A4 paper for: Letters, Reports, Proposals, Invoices, Forms, Meeting documents, Company records, Internal correspondence

Schools and Educational Institutions

A4 paper is commonly used for:

• Assignments
• Worksheets
• Examination materials
• Lesson materials
• Training documents
• Educational handouts

Printing and Photocopying

A4 paper is widely used for general printing and photocopying because the size is supported by most office printers and photocopiers.

Government and Institutional Documents

Government offices, banks, hospitals, law firms and other organizations commonly use A4 paper for administrative records, forms, reports and official correspondence.

A4 Paper and Printers: What Should You Consider?

A4 paper is compatible with many laser printers, inkjet printers and photocopiers, but the appropriate paper specification can vary between machines.

Before using a particular paper, consider the equipment manufacturer’s recommendations for:

• Paper size
• GSM or paper weight
• Paper type
• Single- or double-sided printing
• Maximum paper thickness supported

One thing we always emphasize is that using appropriate paper can help ensure consistent feeding and overall improved printing outcomes.

Paper storage can also matter. Keeping paper in a dry environment and protecting it from excessive moisture can help maintain its condition before use.

Why Does A4 Paper Quality Matter?

Paper quality can affect how sheets feed through a printer or photocopier and can influence the appearance of printed documents.

When paper is unsuitable for a particular machine or poorly stored it may contribute to issues such as:

• Paper jams
• Inconsistent paper feeding
• Uneven print results
• Poor document appearance

For organizations that print or photocopy documents frequently, selecting paper that is appropriate for the equipment and intended use can help support consistent everyday printing.

A4 vs A3 vs A5 vs Letter Paper Types

A4 is part of the ISO paper-size system, but other paper sizes are also used for different purposes. In the table below, we give you an overview of the other paper sizes and what they are commonly used for:

A4 and Letter paper may look similar in size but they are not identical. A4 is slightly narrower and longer than Letter paper.

How Many Sheets Are in a Ream of A4 Paper?

A standard ream of A4 copy paper contains 500 sheets.

A ream is a common unit for describing a packaged quantity of paper. A4 paper may also be sold in cartons or boxes containing multiple reams, although the number of reams per carton can vary by brand and product configuration.

When comparing paper quantities, it is therefore useful to check both the number of sheets per ream and the number of reams contained in the carton.

A4 Paper in Nigerian Offices and Organizations

A4 paper is used across many sectors in Nigeria because it is suitable for a wide range of everyday documents.

Common users include:

• Banks and financial institutions
• Corporate organizations
• Schools and universities
• Government offices
• Hospitals and healthcare organizations
• Law firms
• Printing businesses and business centres
• Small and medium-sized businesses

For many organizations, A4 paper is part of routine administrative work, from printing correspondence and reports to producing forms, records and educational materials.

Need A4 Paper for Your Business?

If you are looking for A4 paper for an office, school, business or other organization, you can explore the available A4 paper bulk purchase options from SGI Global Enterprises.

For information about current brands, GSM options, availability, fewer or other general purchase information, visit our A4 paper product page.

Frequently Asked Questions About A4 Paper

What is the standard size of A4 paper?

The standard size of A4 paper is 210 × 297 mm, which is equivalent to 21 × 29.7 cm or approximately 8.27 × 11.69 inches.

What does GSM mean on A4 paper?

GSM means grams per square metre. It is a measurement used to describe the weight of paper. A higher GSM generally indicates a heavier sheet.

Is 80 GSM better than 70 GSM?

Neither is automatically better. The appropriate GSM depends on the type of document, printing requirements, equipment and the preferred feel of the finished document. 70 GSM is lighter, while 80 GSM is heavier.

What GSM is suitable for everyday office printing?

70 GSM, 75 GSM and 80 GSM can all be suitable for different office-printing requirements. The most suitable choice depends on the document, printing volume, paper preference and printer or photocopier specifications.

Can A4 paper be used for photocopying?

Yes. A4 paper is widely used for photocopying and is supported by many standard office photocopiers. Always follow the equipment manufacturer’s recommended paper specifications.

How many sheets are in a ream of A4 paper?

A standard ream contains 500 sheets of A4 paper.

What is the difference between A4 and Letter paper?

A4 measures 210 × 297 mm, while Letter paper measures 8.5 × 11 inches (216 × 279 mm). A4 is narrower and longer than Letter paper.

What is the difference between A4 and A3 paper?

A4 measures 210 × 297 mm, while A3 measures 297 × 420 mm. A3 is twice the area of A4 and is commonly used for larger documents, diagrams and layouts.