Paper Weight Calculator

Paper Weight Calculator – Find Out Exactly How Much Your Paper Weighs

Whether you're preparing a mailing, planning a print job, or simply curious about the weight of your office paper, our free paper weight calculator gives you instant, accurate results. Enter the paper's grammage, select the size, and specify the number of sheets – the tool instantly calculates the weight per sheet and the total stack weight. No formulas, no guesswork.

Understanding Paper Weight: What Does g/m² Mean?

The most common way to measure paper weight is by its grammage, expressed in grams per square meter (g/m²). This tells you how much one square meter of that paper weighs. Standard office copy paper is typically 80 g/m², while premium brochure paper or cardstock can range from 150 to 400 g/m².

The grammage alone doesn't tell you the weight of a single sheet, because that also depends on the paper size. An A4 sheet at 80 g/m² weighs approximately 5 grams, while the same paper in A3 format weighs about 10 grams. Our calculator handles all of this automatically.

How to Use the Paper Weight Calculator

Using the calculator is straightforward. Simply fill in three values:

• Grammage (g/m²): The paper weight specification, such as 80, 120, or 200 g/m²
• Paper size: Choose from standard formats like A4, A3, A5, Letter, or enter custom dimensions
• Number of sheets: How many sheets are in your stack?

The calculator immediately displays the weight of one sheet in grams and the total weight of the entire stack. Results update in real time as you type.

Why Does Paper Weight Matter?

Knowing the weight of paper is more useful than you might think. Here are the most important real-world applications:

• Postal and shipping costs: The weight of a letter or package directly determines postage. Knowing that 20 sheets of A4 paper (80 g/m²) weigh 100 grams helps you choose the right postal category.
• Print industry: Print shops and graphic designers use paper weight to estimate material costs, shipping charges, and ink consumption for large print runs.
• Warehousing and logistics: Companies storing large quantities of paper need accurate weight data for shelf load calculations and freight planning.
• Office management: Knowing the weight of a full ream or printer tray helps ensure equipment operates within safe limits.
• Creative and craft projects: Bookbinders, artists, and crafters select paper by weight to achieve the right feel, durability, and structure.

Practical Examples

Example 1: Calculating postage for a document mailing

You need to mail a 15-page report printed on standard A4 copy paper (80 g/m²). Each sheet weighs 5 g, so 15 sheets weigh 75 g. Add the envelope (approx. 5–8 g) and you're just under 100 g – fitting within the most economical letter rate in many countries.

Example 2: Estimating weight for a large print run

A marketing agency orders 1,000 double-sided flyers on 135 g/m² paper, A4 format. That's 1,000 sheets. Each sheet weighs approximately 8.44 g, making the total print run about 8.44 kg – crucial for calculating shipping costs to distribution points.

Example 3: Office printer capacity

A standard office printer holds up to 500 sheets of A4 paper. At 80 g/m², that paper tray holds approximately 2.5 kg of paper. This information is relevant for understanding the mechanical load on the printer and the weight of a full paper delivery.

Frequently Asked Questions

How do I calculate the weight of a single sheet of paper?

Multiply the grammage (g/m²) by the sheet area in square meters. For A4 (0.0625 m²) at 80 g/m²: 80 × 0.0625 = 5 g per sheet. Our calculator automates this for any size or grammage.

What is a typical paper weight for office printing?

Standard copy paper is 80 g/m², which is suitable for most everyday printing tasks. For higher-quality documents, presentations, or letterheads, 90–120 g/m² is commonly used. Brochures and flyers often use 130–170 g/m².

Can I use custom paper dimensions?

Yes. In addition to standard formats (A3, A4, A5, Letter, Legal), the calculator allows you to input custom width and height measurements, making it suitable for non-standard paper sizes used in specialty printing.

Is the paper weight calculator free to use?

Absolutely. The calculator is 100% free, requires no sign-up, and works directly in your browser on any device – desktop, tablet, or smartphone.

What is the difference between paper weight and paper thickness?

Paper weight (g/m²) refers to mass per unit area, while paper thickness (measured in micrometers or millimeters) refers to physical depth. Heavier paper is generally thicker, but the relationship isn't linear – paper density and manufacturing process also play a role.