Paper GSM Explained: How to Pick the Perfect Weight for Your Print Project

What Does GSM Mean for Paper?

If you’ve ever ordered flyers, business cards, or brochures, you’ve likely come across the term GSM. But what does GSM paper actually mean, and why does it matter for your print project?

GSM stands for “grams per square metre” and refers to the weight of a single sheet of paper, measured per square metre. The higher the GSM, the heavier—and generally thicker—the paper. For example, standard office printer paper is usually 80-100gsm, while a premium business card might be 350-450gsm for a sturdy, high-quality feel.

GSM vs. Thickness: What’s the Difference?

While GSM is a measure of weight, it’s often used as a shorthand for thickness. However, GSM does not always equal thickness. Two sheets with the same GSM can feel different due to their material composition. For instance, a 350gsm silk card may feel thinner than a 300gsm matte card because of how the fibres are compressed and finished.

Why Does GSM Matter in Printing Project?

• Durability: Higher GSM papers are more durable, making them ideal for items like business cards or invitations that need to last.

• Perception: Thicker paper feels more premium, which is why luxury brands often opt for 300gsm+ for marketing materials.

• Functionality: Lighter GSM (e.g., 90-120gsm) is cost-effective for flyers or handouts, while heavier weights (e.g., 250-400gsm) are better for brochures or cards.

GSM Paper Guide: Which Weight is Right for You?

Here’s a quick reference table to help you choose the best GSM for your project:

GSM Range	Typical Use Cases	Notes
35-55gsm	Newspapers, books with many pages	Very thin, lightweight, and cost-effective.
70-90gsm	Office printer paper, letters, forms	Standard for everyday printing.
90-120gsm	Flyers, takeaway menus, posters	Lightweight but sturdy enough for short-term use.
130-170gsm	High-quality flyers, brochures, posters	Thicker, better for outdoor or repeated handling.
200-300gsm	Magazine covers, premium flyers, certificates	Stiffer, stands up well when folded.
300-350gsm	Business cards, greeting cards, invitations	Card-like, durable, and premium feel.
350-450gsm	Luxury business cards, postcards, presentation folders	Thickest, most rigid, and long-lasting.

Common Paper Sizes & GSM Pairings

A4 (210 x 297mm)

• 80-120gsm: Ideal for letters, reports, and everyday office printing.

• 150-200gsm: Used for high-quality brochures or presentations.

A5 (148 x 210mm)

• 130-170gsm: Perfect for flyers or notepads.

• 250-300gsm: Great for menus or small booklets.

A6 (105 x 148mm)

• 250-350gsm: Common for postcards or handouts.

How to Choose the Right GSM for Your Project

1. Consider the Purpose

• Short-term use (e.g., flyers, handouts): Opt for 90-150gsm to keep costs low.

• Long-term use (e.g., business cards, invitations): Choose 300-450gsm for durability and a premium feel.

2. Think About the Finish

• Matte or uncoated: Absorbs ink well, ideal for writing or detailed designs.

• Gloss or silk: Reflects light, making colours pop—great for marketing materials.

3. Budget & Quantity

• Higher GSM costs more, so balance quality with quantity. For bulk orders (e.g., event flyers), 130-170gsm is a sweet spot.

Why Work With BluPrint?

✅ Local, reliable & friendly service – We’re based in Kingston and serve South West London & Surrey.

✅ Fast turnaround – Get your prints when you need them.

✅ Expert advice – Unsure about GSM? Our team is here to help.

✅ Attention to detail – From design to delivery, we ensure quality every step of the way.

Need Help Choosing? Order a Sample Pack!

Still unsure? Order our free sample pack to compare different GSM weights and finishes. Or, give us a call—we’re happy to guide you through the process.

Find out more about our printing services or request a quote today!

Final Thoughts

Choosing the right GSM ensures your print project looks and feels professional. Whether you need lightweight flyers or ultra-premium business cards, BluPrint has the expertise and range to deliver.

You name it, BluPrint it.