Paper Weights Explained: What Does GSM Mean?

Paper weights and gsm explained

When you order print you'll see numbers like 130gsm, 350gsm or 450gsm. GSM stands for grams per square metre. It's the weight of the paper, and it's the easiest way to understand how thick and sturdy a product will feel.

A rough guide to paper weights

Weight Feels like Typical uses
80–100gsm Office printer paper Letterheads, notepads, NCR forms
120–150gsm A good quality magazine page Flyers for letterbox drops, folded leaflets, posters
170–250gsm A sturdy brochure cover Premium flyers, menus, booklet covers
300–350gsm Thin card Postcards, invitations, premium flyers, vouchers
400–450gsm Thick card Business cards, loyalty cards, swing tags

Silk, gloss or uncoated?

  • Gloss: shiny, makes photos pop, great for bold flyers and posters
  • Silk: a smooth semi-matt finish, easy to read and elegant, our most popular choice
  • Uncoated: a natural paper feel, easy to write on, ideal for letterheads and notepads

Which weight should you choose?

Handing out at events or letterbox drops? Lighter stocks keep costs down for large quantities. Want it to feel premium? Go heavier, because people associate weight with quality. Will it be folded? Heavier stocks need creasing to fold neatly, which we handle for you.

Examples from our range

Frequently asked questions

What does gsm mean?

GSM means grams per square metre. It measures paper weight, and a higher number means thicker, sturdier paper.

What gsm is best for flyers?

130–170gsm suits mass distribution, while 250–350gsm feels premium for menus and vouchers.

What gsm are business cards?

Good business cards are usually 350–450gsm. Ours are 450gsm silk.

Still unsure?

Ask us or call 07769 200277. We'll recommend the right paper for your job and budget.

Related: Print finishes explained · Flyer printing guide