Understanding Paper Weights and Sizes: A Guide for Kenyan Buyers

Walk into any stationery supplier in Nairobi and you will encounter paper described as 80gsm A4, 70gsm foolscap, 160gsm card, A3 cartridge paper, and a dozen other specifications. For buyers who are not familiar with what these terms mean, choosing the right paper can feel like guesswork. Yet paper weight and size have a real and practical impact on how your documents look, how your printer handles the paper, and how much your purchase costs.

This guide demystifies paper weights and sizes for Kenyan buyers, giving you the knowledge to choose confidently every time.

What Does GSM Mean?

GSM stands for grams per square metre it is the standard measurement of paper weight, expressing how much one square metre of that paper weighs in grams. The higher the gsm number, the heavier and thicker the paper. This single number tells you most of what you need to know about a paper’s weight and quality.

Here is how the most common gsm values translate to practical use in Kenyan offices and schools:

• 60-70gsm: thin, lightweight paper. Suitable for internal drafts and simple documents where appearance is not important. Prone to show-through with heavier ink coverage and tends to jam in lower-quality printers.
• 75-80gsm: the standard for everyday office printing. Most A4 printer paper sold in Kenya is 80gsm. It handles laser and inkjet printing well, feeds reliably through most printers, and produces clean results for professional documents.
• 90-100gsm: noticeably heavier and more premium feeling. Used for client-facing documents, proposals, letterheads, and presentations where a quality impression matters.
• 120-160gsm: heavy paper approaching card territory. Used for covers, dividers, menus, noticeboards, and display materials.
• 200gsm and above: card or cover stock. Used for business cards, certificates, packaging, and professional covers.

The A-Series Paper Sizes Explained

Kenyan offices and schools use the international ISO A-series paper sizing standard. The most important sizes to understand are:

• A0: the largest standard size (841 x 1189mm). Used for posters, technical drawings, and large-format display. Uncommon in general office use.
• A1: half of A0 (594 x 841mm). Used for posters and architectural drawings.
• A2: half of A1 (420 x 594mm). Used for posters, flip chart pads, and larger display materials.
• A3: half of A2 (297 x 420mm). The second most common office size in Kenya. Used for spreadsheets, financial reports with wide tables, architectural floor plans, and larger drawings.
• A4: half of A3 (210 x 297mm). By far the most common paper size in Kenyan offices and schools. The default for printing, copying, letters, reports, and exercise work.
• A5: half of A4 (148 x 210mm). Used for notepads, flyers, event programmes, and smaller notebooks.
• A6: half of A5 (105 x 148mm). Used for postcards, notes, and small printed materials.

Choosing the Right Paper for the Right Job

Armed with an understanding of gsm and sizes, choosing paper becomes straightforward:

• Everyday office printing and photocopying: 80gsm A4
• Important documents, proposals, presentations: 90-100gsm A4
• Letterheads: 100gsm A4 for a premium feel
• Certificates and awards: 120-160gsm A4 or A3
• Flip chart pads: 60-80gsm A2 or A1
• Art and sketching: 120gsm+ cartridge paper in A3 or A4
• Printing wide tables and spreadsheets: 80gsm A3

Does Paper Quality Affect Printer Performance?

Yes, significantly. Low-quality or inappropriately weighted paper causes more printer jams, produces inferior print quality, and in the long run costs more through wasted time and misprints. Most office laser and inkjet printers are optimised for 80gsm paper, and feeding paper that is too thin (60gsm) or too heavy (200gsm+) can cause feeding errors. Always check your printer’s specifications for the supported paper weight range.

Buying Paper in Kenya

Bienville Supplies stocks a comprehensive range of paper in the most commonly needed sizes and weights for Kenyan offices and schools from standard 80gsm A4 in reams and cartons, to A3, cartridge paper, and card stock. We offer competitive pricing and bulk discounts for businesses and institutions.

Visit www.bienvillesupplies.co.ke to browse our paper range or contact our team to discuss your office paper requirements.