1. What is Paper Grammage?

Grammage is the measure of a paper's weight expressed as grams per square meter (g/m²). It's a key specification for paper quality and thickness, commonly used in the printing and packaging industries.

2. How Does the Calculator Work?

The calculator uses the grammage formula:

Where:

• \( Weight \) — Mass of the paper sample in grams
• \( Area \) — Area of the paper sample in square meters

Explanation: The formula calculates how many grams one square meter of the paper would weigh.

3. Importance of Grammage Calculation

Details: Grammage determines paper thickness, stiffness, and quality. It affects printing performance, postage costs, and product packaging strength.

4. Using the Calculator

Tips: Enter the weight of your paper sample in grams and its area in square meters. For accurate results, measure a large enough sample to minimize measurement errors.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between grammage and basis weight?
A: Grammage uses metric units (g/m²) while basis weight uses pounds per ream (usually 500 sheets) of a specific size.

Q2: What are common grammage values?
A: Standard copy paper is ~80 g/m², cardstock ~200 g/m², and newsprint ~45 g/m².

Q3: How do I measure area for irregular shapes?
A: For irregular shapes, calculate area using appropriate geometric formulas or use graph paper to estimate.

Q4: Does grammage correlate with thickness?
A: Generally yes, but different paper densities can affect this relationship.

Q5: Why is grammage important in printing?
A: It affects ink absorption, feed reliability in printers, and the professional feel of printed materials.