GSM (Grams per Square Meter) is the universal measurement used to describe the weight, density, and overall sturdiness of cardstock. A higher GSM number means the cardstock is thicker, heavier, and more durable, making it ideal for projects that need structure (like business cards or invitations). Lower GSM numbers indicate lighter, more flexible paperâsimilar to standard printer paper (80â100 GSM).
Higher GSM = thicker, sturdier, more premium
Lower GSM = thinner, lighter, more flexible
How GSM Works
Definition:
GSM represents the weight in grams of a sheet of paper measuring 1 meter Ă 1 meter.
Why Itâs Universal Unlike âpoundâ (lb) paper weightâwhich varies depending on the type of paper being measuredâGSM is consistent across all paper types, making it the most reliable way to compare true thickness and quality.
Common GSM Ranges for Paper & Cardstock
| GSM Range | Type | Typical Uses |
|---|---|---|
| 80â100 GSM | Standard paper | Printer paper, worksheets, inserts |
| 120â170 GSM | Light cardstock | Flyers, brochures, layering pieces |
| 200â300 GSM | Heavy cardstock | Greeting cards, invitations, business cards |
| 300+ GSM | Extraâheavy cardstock | Premium cards, luxury prints, structural crafts |
Why GSM Matters for Cardstock
Durability
Higher GSM cardstock resists bending, creasing, and wearâperfect for items handled often or meant to last.
Feel & Quality
Thicker cardstock has a more professional, premium, and substantial feel, which elevates the final project.
Project Suitability
Choosing the right GSM ensures your cardstock performs well for its intended useâwhether thatâs crafting, printing, scoring, or structural builds.
Additional Cardstock Tips Worth Knowing
Texture Affects Cutting
- Smooth cardstock cuts cleanest on machines like Loklik
- Textured cardstock (linen, canvas, glitter) may require more pressure or a different blade.
Core Type Matters
- Solidâcore cardstock is the same color all the way throughâideal for clean cuts.
- Whiteâcore cardstock shows white edges when cut or torn, which can be a design choice or a drawback depending on the project.
Coated vs. Uncoated
- Coated cardstock (glossy, matte, pearl) is great for printing vibrant images.
- Uncoated cardstock is better for writing, stamping, and crafting.
Machine Compatibility
- Most cutting machines handle up to ~110 lb / 300 GSM comfortably.
- Anything thicker may require multiple passes or a specialty blade.
Scoring Is Essential for High GSM
Heavier cardstock cracks when folded unless itâs scored firstâespecially 250+ GSM.
Final Thoughts
Choosing the right GSM isnât just a technical decision â itâs a creative one. The weight of your cardstock shapes how your project feels, how it holds up over time, and how confidently it represents your vision. Whether youâre crafting keepsakes, designing professional pieces, or building something meant to inspire, understanding GSM gives you the power to choose materials that match your intention.
At the end of the day, the âbestâ cardstock is the one that supports your story, your style, and your purpose. When you know what each GSM can do, youâre not just picking paper â youâre setting the foundation for a project that feels as good as it looks.
