Quick & Easy Guide to Cardstock Sizes and Paper Weights

Quick & Easy Guide to Cardstock Sizes and Paper Weights (LB vs GSM)

Cardstock shopping feels simple… until you see labels like 80 lb, 110 lb, 250 GSM, A4, 12x12, and cover stock all on the same shelf.

This guide makes it easy. You’ll learn what cardstock is, how paper weight works, the most common sizes for cardmaking and scrapbooking, and what to buy first if you’re building a practical stash.

✨ What Is Cardstock?

Cardstock is a thicker, sturdier paper used for projects that need structure and durability—like greeting cards, die-cuts, tags, and scrapbook layouts.

• Stronger than printer paper (so it won’t crumple as easily)
• Still flexible (unlike chipboard or cardboard)
• Great “base paper” for stamping, cutting, and layering

If you’re making handmade cards or paper crafts, cardstock is usually the best everyday starting point.

🎨 Cardstock Finishes & Textures (what they’re best for)

Smooth / Matte cardstock

• Best for stamping and ink blending
• Most beginner-friendly “do-it-all” option

Glossy cardstock

• Shiny coating for a polished look
• Some inks take longer to dry—test before doing heavy blending

Textured cardstock (linen, canvas, woodgrain)

• Beautiful for “fancy” backgrounds and elegant layers
• Fine detail stamping can look softer because of texture

Vellum

• Translucent and dreamy for overlays
• Perfect for soft layers behind sentiments and florals

Glitter / Metallic / Foil cardstock

• Instant sparkle and luxury
• Best for accents: sentiments, frames, die-cut words, stars, etc.

⚖️ LB vs GSM: Why paper weight is confusing

There are two common ways paper is labeled:

• LB (pounds) — common in the U.S.
• GSM — common internationally and easier to compare

Why LB can be confusing: “80 lb” isn’t always the same thickness across paper categories (text vs cover vs specialty). That’s why a paper with a similar pound number can still feel different in your hand.

Why GSM is helpful: GSM is a direct density measurement. Higher GSM almost always means thicker/sturdier paper.

Easy GSM cheat sheet

• 90–120 GSM: printer / notebook paper
• 160–220 GSM: light cardstock (great for layering)
• 250–300 GSM: sturdy cardstock (great for card fronts)
• 300–350+ GSM: heavy cardstock (great for card bases)

📏 Common Cardstock Sizes (cards, panels, scrapbooks)

These are the sizes you’ll see most often in paper crafting:

• 8.5" x 11" (Letter): most versatile for cardmaking and printing
• 8.5" x 14" (Legal): great for larger projects and long cuts
• A4: common outside North America and printer-friendly
• 6" x 6": perfect for quick layers and small backgrounds
• 12" x 12": standard scrapbook layout size

Beginner pick: If you mostly make cards, start with 8.5" x 11". If you scrapbook, add 12" x 12".

✉️ Popular Card Sizes (A2, slimline, 5x7)

Cardmaking has “standard” sizes that help with envelopes and mailing.

A2 (most popular in the U.S.)

• Finished card: 4.25" x 5.5"
• Cut cardstock: 8.5" x 5.5", then fold in half

5" x 7"

• Classic “larger greeting card” size
• Great for bold focal points and bigger sentiments

Slimline

• Popular long, modern look
• Common finished size is around 3.5" x 8.5" (varies by maker)

🧱 Common Cardstock Weights (and what to use each for)

Here’s the practical version—what most crafters actually use weights for:

65–80 lb / ~200–300 GSM

• Best for layers, die-cuts, and card fronts
• Easier to cut and score

100–110 lb / ~300–350 GSM

• Best for card bases and projects that need structure
• Feels “professional” in the hand

Very heavy cardstock (350+ GSM)

• Great for sturdy pieces, tags, boxes, and some paper flowers
• May need stronger pressure for intricate die-cuts

Easy starter setup: One smooth cardstock around 80 lb for layers + one around 110 lb for bases.

✅ What to consider when buying cardstock

• Project type: cards, scrapbooks, journaling, decor
• Finish: smooth vs textured vs glossy
• Weight: lightweight layers vs sturdy bases
• Ink compatibility: some papers blend better than others
• Longevity: acid-free papers are ideal for memory-keeping

Pro tip: If your stamping looks fuzzy or your blending feels patchy, try switching cardstock before blaming your technique. Paper makes a huge difference.

📚 Related WondersArtist Guides

• The Ultimate Guide to Cardstock Paper & Craft Paper
• How to Make a Card: Step-by-Step Guide
• Scrapbooking: Everything You Need to Know to Get Started

🎁 Free Clipart Sampler

If you want cozy, high-resolution clipart to practice cutting, layering, and paper pairing with, a free sampler is available.

Sign up below and the sampler will arrive gently in your inbox, ready for cards, tags, journals, and layered paper projects 💌

💎 All Access Membership

All Access Membership gives you a whole library of printable artwork to cut, layer, and turn into handmade projects.

• ✨ Unlimited access to clipart, digital papers, journaling pages, and cardmaking kits
• 🧺 New releases included while active
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• 🔁 Perpetual rights for everything downloaded during active time

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🌷 Final Thoughts

Once you understand sizes and weights, buying cardstock gets way less stressful. Start with one reliable smooth cardstock for everyday crafting, then add specialty finishes (vellum, glitter, foil, textured) as “accent papers” when you want extra wow.