Gsm To Thickness Calculator

Meet Bilal. He runs a small printing shop and often orders paper and packaging materials from suppliers. He sees specifications like 150 GSM, 250 GSM, and 300 GSM, but he never really knows how thick the sheets will be. Bilal stares at the numbers, especially GSM values and density details, and feels completely overwhelmed. He keeps asking: “How do I convert GSM into thickness so I can be sure I’m choosing the right material?”

If you’ve ever felt like Bilal, you’re in the right place.

Introducing the Solution: The Gsm To Thickness Calculator

Feeling stuck, Bilal needed a way to cut through the confusion and get a clear answer. What he needed was a tool designed for exactly this moment.

That’s where our Gsm To Thickness Calculator comes in. It’s a simple tool that gives you the thickness in millimeters, microns, mils, or inches—without the headache of manual math.

Putting It to the Test

Let’s walk through how Bilal uses the calculator. First, he inputs the GSM value, which is 200.
Next, for density, he enters 0.8 g/cm³, which is standard for most copy papers.
Finally, he selects the output unit he wants—millimeters.

Bilal takes a breath and clicks “Calculate.”

Understanding the Results

The calculator instantly shows the answer: 0.25 mm.

For Bilal, this isn’t just a number. It means his 200 GSM paper is about 0.25 millimeters thick. Now he knows it’s sturdy enough for quality prints but not too heavy for everyday use. The feeling of being overwhelmed is replaced with confidence and control.

Beyond the Calculator

Now that you have your number, just like Bilal, what should you do next?

• Use the result to compare paper and packaging options before ordering.
• Change GSM and density values to see how thickness changes for different materials.
• Discuss your results with suppliers to make better purchasing decisions.

Your Turn

Feeling inspired by Bilal’s story? It’s your turn to go from confused to confident. Scroll back up and use the Gsm To Thickness Calculator to find your numbers.

The Formula Behind the Tool

For those curious about the math, the calculator uses the following formulas:

Primary Calculation: From GSM to Millimeters

Using density in g/cm³:
Thickness (mm) = (GSM / Density in g/cm³) / 1000

Using density in kg/m³:
Thickness (mm) = GSM / Density in kg/m³

To Mils (thousandths of an inch)

Thickness (Mils) = (GSM / Density in g/cm³) × 0.0393701

To Micrometers (µm)

Thickness (µm) = (GSM / Density in g/cm³)

To Inches (in)

Thickness (inches) = (GSM / Density in g/cm³) × 0.0000393701

Supporting Density Information

Material	Density (g/cm³)
Standard Copy Paper	~0.8
Cardstock / Paperboard	~0.7
Coated Paper	~1.2
PET (Plastic)	~1.38
PVC	~1.4
HDPE	~0.95
LDPE	~0.92
Aluminum	2.7
Steel	7.85
Copper	8.96

Variables:

• GSM = Grams per square meter (material weight)
• Density = Mass per volume of the material
• Thickness = Result in mm, µm, mils, or inches

Quick Reference Table

GSM Value	Density (g/cm³)	Thickness (mm)	Thickness (µm)	Thickness (Mils)
100 GSM	0.8	0.125 mm	125 µm	4.92
150 GSM	0.8	0.187 mm	187 µm	7.36
200 GSM	0.8	0.250 mm	250 µm	9.84
250 GSM	0.7	0.357 mm	357 µm	14.05
300 GSM	0.7	0.428 mm	428 µm	16.85
400 GSM	0.7	0.571 mm	571 µm	22.44

Frequently Asked Questions