Business card paper weights compared

Updated 2026-10-12

The Takeaway

When selecting card paper weights, you are choosing the physical thickness and stiffness of your business card. This decision directly impacts the tactile feel, durability, and perceived value of the item. For most standard professional applications, a weight between 300 and 400 GSM is the industry standard. Heavier stocks convey a premium feel but may require specific finishing techniques to maintain structural integrity during printing and handling.

Understanding Measurement Systems

Paper weight is measured in two primary systems: Grams per Square Meter (GSM) and Pounds (lb). GSM is the international standard defined by ISO 536, representing the mass of one square meter of paper. It is an absolute measure, meaning 300 GSM paper has the same weight per area regardless of its size.

Poundage, however, is a relative measure based on the weight of a full ream (500 sheets) at a specific base size. Because business cards use different base sizes depending on the category, the conversion varies:

• Cover stock (common for cards): Base size 20 x 26 inches.
• Text/Book stock: Base size 25 x 38 inches.
• Bond/Writing stock: Base size 17 x 22 inches.

For business cards, which are typically printed on cover stock, the conversion is approximately: gsm = lb × 2.7041 (and lb = gsm ÷ 2.7041).

Common Card Paper Weights

The following table compares common weights used in business card production.

pt is a thickness — not a weight. 1 pt = 0.001 in = 0.0254 mm, so pt converts exactly to mm; it does not convert to GSM. The millimetre figures above are caliper measurements of production art card, and thickness varies by mill: a 300 GSM art card from one manufacturer can measure thicker than a 310 GSM from another. That is why the millimetre reading — not the gsm — tells you how thick the card actually is. If the exact thickness matters, ask your printer for both the GSM and the caliper.

Practical Implications for You

When you increase the weight, you increase the rigidity. A 300 GSM card is flexible enough to bend slightly, which is standard for most corporate exchanges. A 400 GSM card is stiffer and holds its shape better, making it ideal for designs that include embossing, debossing, or foil stamping, as the surface is more stable under pressure.

If you choose a weight above 400 GSM, be aware that the card becomes significantly thicker. This may affect how it fits in a wallet or card holder. Additionally, very thick cards may require specific die-cutting blades to ensure a clean edge without chipping the paper fibers.

FAQ

Is higher GSM always better for business cards? Not necessarily. While higher GSM indicates a thicker card, it does not automatically mean better quality. A well-printed 300 GSM card with sharp color reproduction and clean edges is often more professional than a poorly printed 600 GSM card. Choose the weight that matches your design intent and budget.

Can I use 300 GSM text paper for business cards? You can, but it is less common. 300 GSM is 300 GSM at any sheet size — but two 300 GSM sheets can still differ in thickness, because stocks differ in density (bulk). Cover stocks are generally denser and stiffer, which suits cards well; the “cover vs text” distinction chiefly matters for reading lb correctly (each category uses a different base size), not for reading GSM.

Does paper weight affect ink absorption? Yes. Heavier papers often have different surface coatings and calibers, which can affect how ink sits on the surface. Matte finishes on heavier stocks may absorb ink differently than gloss finishes. Always request a proof to verify color accuracy for your specific paper weight and finish.