Understanding the weight of cardstock is essential for anyone involved in printing, crafting, or packaging. The term gsm, short for grams per square meter, is the standard unit used to measure the thickness and quality of paper-based materials. When asking how many gsm is cardstock, the answer is not a single number but a range, as cardstock encompasses various weights suitable for different applications.
Defining Cardstock and Its Purpose
Cardstock is a thicker, sturdier type of paper compared to standard writing or printer paper. It is characterized by its weight, which provides rigidity and a premium feel. This material is specifically chosen when the project requires something that stands up on its own, resists bending, and conveys a sense of quality.
The Standard GSM Range for Cardstock
To answer the core question of how many gsm is cardstock, you must look at a specific spectrum. Generally, cardstock falls between 200 gsm and 400 gsm. Lighter options start around 200-250 gsm, which behaves like a heavy cover stock, while true cardstock often ranges from 270 gsm to 350 gsm. Weights exceeding 350 gsm are considered extra-heavy card stock or rigid board.
Lightweight Cardstock (200–250 gsm)
This weight is ideal for projects that require a slight structure without being too rigid. It is commonly used for items like greeting cards, simple flyers, and lightweight packaging. At this weight, the material is easy to fold, making it practical for mass-produced items that still need to feel substantial in the hand.
Standard Heavy Cardstock (270–300 gsm)
Often referred to as 100 lb or 120 lb cardstock in imperial measurements, this is the most common weight for professional use. This range is the sweet spot for how many gsm is cardstock in business settings. It is the go-to choice for wedding invitations, business cards, presentation folders, and high-quality marketing materials that need to withstand handling without being too bulky.
Heavy-Duty and Specialty Cardstock
For projects requiring exceptional durability, such as retail packaging, luxury packaging, or premium business cards, weights between 300 gsm and 400 gsm are utilized. This heavy cardstock provides a canvas that feels premium and substantial. When comparing how many gsm is cardstock for these applications, the higher weight ensures the product does not sag or warp, offering maximum protection for the contents.
Comparing GSM to Other Measurements
While gsm is the international standard, you might encounter measurements like points (pt) or pounds (lb). For reference, a 100 lb cardstock is roughly equivalent to 260-280 gsm. If a supplier asks if you want a material measured in points, they are likely referring to the caliper or thickness of the sheet. A 10 pt card is generally similar to a 250 gsm sheet, illustrating how these units correlate when selecting the right material.
Factors to Consider Beyond Weight
When determining the right gsm for your project, the answer to how many gsm is cardstock depends on the final use. If the card is meant to slide easily into an envelope, a 250 gsm might be practical. However, if the card needs to stand upright on a desk or resist bending in a wallet, a 300 gsm or higher is necessary. The finish, such as matte or glossy, does not change the weight but will influence the texture and visual appeal of the cardstock.
