30.10.2026
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Which paper weight should you choose? A practical guide

A practical guide to choosing the right paper weight for business cards, flyers, catalogues and other printed materials.
Textured Paper Samples in Different Weights
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You’re choosing paper for business cards, flyers or a catalogue — and suddenly you’re faced with numbers such as 90 gsm, 130 gsm, 170 gsm, 250 gsm and 350 gsm. Which paper weight is best? Does a higher number automatically mean better quality? How can you check the weight of paper, and why can two sheets with the same weight feel completely different?

The choice of paper can have a bigger impact than you might expect. It influences not only the look of the finished product, but also how it feels, how durable and functional it is, and the overall impression it creates. One type of paper may be right for a flyer handed out at an event, another for an elegant invitation, and something completely different for a multi-page catalogue.

The good news is that you don’t need to be a printing expert to make the right choice. You simply need to understand a few basic principles, know how to determine paper weight and familiarise yourself with the main types of paper available at different weights.

In this guide, Four zeros explains what paper weight means, how it affects the finished product and how to choose the right weight for a particular type of print.

What is paper weight?

In this context, paper weight refers to the mass of one square metre of a particular type of paper. It is measured in grams per square metre (gsm).

So, if paper has a weight of 100 gsm, one square metre of it weighs 100 grams. A sheet of the same size at 300 gsm would weigh 300 grams.

For customers, this figure mainly gives an indication of what to expect from the paper. In general, the higher the weight, the heavier and stiffer the paper tends to be.

But it’s important to emphasise the words “in general.”

Paper weight is not the same as thickness. Two types of paper with the same weight of 250 gsm can differ in thickness, stiffness and structure. These differences can be influenced by factors such as the type of fibres used, the production process, the surface finish and the paper’s bulk.

That’s why you shouldn’t base your choice on a single number. A general classification by paper weight can be a useful starting point, but the final decision should also take into account the type of paper, its surface, its intended purpose and how it will be used.

How to calculate paper weight

If we know the weight of a sheet and its area, we can calculate the paper weight ourselves. The formula is simple:

paper weight [g/m²] = sheet weight [g] ÷ sheet area [m²]

For example, a sheet measuring 50 × 70 cm has an area of 0.35 m². If it weighs 70 g, its paper weight is 200 g/m²:

70 g ÷ 0.35 m² = 200 g/m²

So, how can you measure paper weight at home? First, measure the length and width of the sheet accurately and calculate its area in square metres. Then weigh the paper using the most accurate scales you have. Since a single sheet may be too light to weigh accurately, it’s better to weigh several identical sheets and then divide the total weight by the number of sheets.

This is a simple way to check the paper weight when you don’t have the original packaging or the manufacturer’s specifications. However, keep in mind that measurements taken at home will only give you an approximate result.

Types of paper by weight

The simplest way to classify paper by weight is to divide it into lightweight paper, medium-weight paper and heavier materials that are closer to card in terms of their properties. However, these categories do not have strictly defined boundaries — what matters much more is the intended use of the finished product.

How can you estimate paper weight without measuring it? You can get a rough idea from its weight, stiffness and how it feels in your hand, but this won’t tell you the exact figure. The most reliable information can be found on the packaging, in the manufacturer’s specifications or in the information provided by the print shop.

The ranges below will help you understand what different paper weights are most commonly used for.