Paper Thickness Calculator
Calculate total paper stack thickness by entering the number of sheets and thickness per sheet. Get results in mm, inches, and microns with interactive growth and comparison charts for any paper type.
About This Calculator
The Paper Thickness Calculator helps you determine the total thickness of a stack of paper by multiplying the number of sheets by the thickness per sheet. Whether you are printing a document at the office, selecting cardstock for a craft project, or estimating shipping dimensions for a bulk order, knowing the exact stack thickness helps you plan ahead and avoid paper jams in printers.
The formula is straightforward: Total Thickness = Number of Sheets × Thickness per Sheet. Standard 80 gsm office paper has a thickness of approximately 0.1 mm per sheet, but this value varies by paper type — from thin tissue paper (0.03 mm) to thick cardstock (0.3 mm or more). You can either use the default value of 0.1 mm or enter a custom thickness. The calculator displays results in three units: millimeters, inches, and microns, making it useful for both metric and imperial measurements.
For accurate results, stack a known number of sheets from the same pack, compress them gently, and measure the total height with a ruler. Divide by the number of sheets to get the thickness per sheet. The interactive growth chart shows how stack thickness scales as the number of sheets increases, and the paper type comparison chart helps you compare stack thickness across seven common paper types.
Regional Notes
India: Most Indian offices and schools use 75-80 gsm A4 paper with thickness around 0.1 mm. Bond paper and premium stationery are slightly thicker at 0.12-0.15 mm.
United States: Letter-size paper (8.5 × 11 inches) is commonly available in 20 lb bond weight, which has a thickness of approximately 0.004 inches (0.1 mm). Cardstock is often sold in 65 lb to 110 lb weights with corresponding thicknesses.
United Kingdom: A4 paper in 80 gsm is standard for business correspondence. Paper thickness is typically specified in microns, where 80 gsm paper is approximately 100 microns (0.1 mm). The UK also uses the term "grammage" for paper weight.
Frequently Asked Questions
How do I calculate paper thickness?
To calculate paper stack thickness, multiply the number of sheets by the thickness of each sheet. For example, 100 sheets of standard printer paper (0.1 mm each) gives a total stack thickness of 10 mm. You can also measure a stack with a ruler and divide by the number of sheets to find the thickness per sheet.
What is the thickness of standard printer paper?
Standard 80 gsm printer paper typically has a thickness of about 0.1 mm (100 microns or 4 mils). This can vary slightly between manufacturers, paper finishes (matte vs glossy), and humidity conditions, but 0.1 mm is the standard reference value used for most office paper.
How thick is cardstock compared to regular paper?
Cardstock is significantly thicker than regular printer paper. While standard paper is about 0.1 mm thick, cardstock ranges from 0.25 mm to 0.4 mm or more depending on the weight. Common cardstock weights like 110 lb index (199 gsm) measure approximately 0.28 mm thick, making it 2-4 times thicker than standard paper.
How many sheets of paper make 1 mm?
With standard 80 gsm printer paper at 0.1 mm per sheet, approximately 10 sheets equal 1 mm of stack thickness. For thinner paper like newsprint (0.07 mm), about 14 sheets make 1 mm. For thicker paper like cardstock (0.3 mm), only about 3 sheets make 1 mm.
What is the difference between paper thickness and paper weight?
Paper thickness (caliper) measures the physical dimension in mm, inches, or microns. Paper weight (grammage or basis weight) measures mass per unit area in gsm or pounds. While thicker paper is generally heavier, two papers with the same gsm can have different thicknesses due to density differences from coating, finish, and fiber composition.
How do I measure paper thickness without a micrometer?
Stack a known number of sheets (preferably 100 or more) from the same pack, press them together firmly, and measure the total stack height with a standard ruler. Divide the measured height by the number of sheets to get the thickness per sheet. For best accuracy, use a large stack to minimize measurement error.
What paper thickness do printers support?
Most home inkjet printers handle paper from 0.08 mm to 0.25 mm (20-24 lb bond up to cardstock). Laser printers typically support 0.08 mm to 0.3 mm. Professional printers can handle up to 0.5 mm or more. Always check your printer manual for the maximum paper thickness specification to avoid jams.
Is paper thickness measured in mm, microns, or points?
Paper thickness can be measured in millimeters (mm), microns (micrometers, µm), or points (pt). One point equals one thousandth of an inch (0.001 in or 0.0254 mm). Microns are commonly used in Europe and Asia, points in North America, and millimeters internationally. This calculator supports all three units.