Have you ever bought a laptop sleeve, screen protector, or replacement screen only to find out it doesn’t fit? This happens more often than you think. Many people assume they know their laptop size, but they measure it the wrong way.
If you’re wondering how to measure laptop screen size, you’re in the right place. The process is simple and takes only a minute or two. You don’t need any special tools—just a measuring tape or ruler.
In this guide, you’ll learn the correct way to measure a laptop screen, how manufacturers determine screen size, how to check your laptop size without measuring it, and common mistakes to avoid.
How to Measure Laptop Screen Size
Quick Answer: How Do You Measure Laptop Screen Size?
To measure a laptop screen size, measure the display diagonally from one visible corner of the screen to the opposite visible corner. Do not include the bezel or frame around the screen. The diagonal measurement in inches is your laptop’s official screen size.
For example:
- 13.3 inches = 13-inch laptop
- 14.0 inches = 14-inch laptop
- 15.6 inches = 15-inch laptop
- 17.3 inches = 17-inch laptop
This is the same method used by laptop manufacturers worldwide.
Why Is Laptop Screen Size Measured Diagonally?
Many people wonder why laptop screens are measured diagonally instead of by width or height.
The reason is simple. Measuring diagonally provides a standard method that all manufacturers can follow. Whether you buy a laptop from Apple, Dell, HP, Lenovo, ASUS, or Acer, screen size is always based on the diagonal measurement.
This makes it easier for buyers to compare different laptops.
What You Need to Measure a Laptop Screen
You don’t need expensive tools.
You can use:
- A measuring tape
- A ruler
- A digital measuring app (optional)
A flexible measuring tape usually gives the most accurate results.
Step-by-Step: How to Measure Laptop Screen Size
Step 1: Open Your Laptop
How to Measure Laptop Screen Size
Place your laptop on a flat surface and open the screen completely.
How to Measure Laptop Screen Size
Step 2: Find the Visible Display Area
Look at the part of the screen that lights up when the laptop is turned on.
Do not include:
- Plastic borders
- Black bezels
- Outer frame
Only measure the actual display area.
Step 3: Measure Diagonally
Place the measuring tape at one corner of the visible screen.
Stretch it diagonally to the opposite corner.
Example:
Top-left corner → Bottom-right corner
or
Top-right corner → Bottom-left corner
Step 4: Read the Measurement
The number shown in inches is your laptop screen size.
If the measurement is close to:
- 11.6 inches → 11-inch laptop
- 13.3 inches → 13-inch laptop
- 14 inches → 14-inch laptop
- 15.6 inches → 15-inch laptop
- 16 inches → 16-inch laptop
- 17.3 inches → 17-inch laptop
you now know your screen size.
Common Laptop Screen Sizes
Here are the most common laptop display sizes available today.
| Screen Size | Common Use |
|---|---|
| 11.6 inches | Small Chromebooks |
| 13.3 inches | Ultrabooks and MacBooks |
| 14 inches | Business laptops |
| 15.6 inches | Everyday laptops |
| 16 inches | Professional and creator laptops |
| 17.3 inches | Gaming laptops |
The 15.6-inch display is currently the most common laptop screen size.
How to Measure Laptop Screen Size
How to Measure Laptop Screen Size
Does Laptop Screen Size Include the Bezel?
No.
Laptop screen size only includes the visible display area.
The bezel is the border around the screen. It is not part of the screen measurement.
If you include the bezel, you’ll get the wrong size and may buy accessories that don’t fit properly.
Can I Measure the Entire Laptop Instead?
Yes, but that gives you the laptop’s physical dimensions, not its screen size.
For example:
A 15.6-inch laptop from one brand may be physically smaller than a 15.6-inch laptop from another brand because bezel sizes differ.
If you’re buying:
- Laptop bags
- Laptop sleeves
- Laptop stands
measure the entire laptop.
If you’re buying:
- Screen protectors
- Replacement screens
measure only the display.
How to Find Laptop Screen Size Without Measuring
How to measure laptop screen size without measuring.
If you don’t have a ruler or tape measure, there are other ways to find your laptop screen size.
Check the Model Number
Most laptops have a sticker on the bottom.
Find the model number and search for it online.
The manufacturer’s specifications page usually lists the screen size.
Check Your Purchase Receipt
If you bought the laptop online, look at the order details.
The display size is usually listed in the product description.
Check the Manufacturer Website
Visit the official support page and enter your laptop model.
You’ll see detailed specifications, including screen size.
How to Measure Laptop Screen Size
How to Measure Laptop Screen Size
How to Check Laptop Screen Size on Windows
Windows doesn’t always show screen size directly, but it can help you identify your model.
- Press Windows + I.
- Open Settings.
- Click System.
- Select About.
- Note your device model.
Search the model online to find the exact display size.
How to Check Screen Size on a MacBook
- Click the Apple menu.
- Select About This Mac.
- Look for the model name.
For example:
- MacBook Air 13
- MacBook Pro 14
- MacBook Pro 16
The model name usually includes the display size.
Laptop Screen Size vs Screen Resolution
Many people confuse screen size with screen resolution.
They are different things.
Screen Size
Screen size is the physical size of the display measured in inches.
Example:
- 13.3 inches
- 15.6 inches
- 17.3 inches
Screen Resolution
Resolution is the number of pixels displayed on the screen.
Examples:
- 1366 × 768
- 1920 × 1080
- 2560 × 1440
- 3840 × 2160
Two laptops can have the same screen size but different resolutions.
Common Mistakes When Measuring a Laptop Screen
Avoid these mistakes:
Measuring the Bezel
Only measure the display area.
Measuring Width Only
Laptop screens are measured diagonally, not horizontally.
Measuring the Entire Laptop
This gives the laptop size, not the screen size.
Guessing the Size
Many people assume they have a 15-inch laptop when it could actually be 14 inches or 15.6 inches.
How to Measure Laptop Screen Size
How to Measure Laptop Screen Size
Why Knowing Your Laptop Screen Size Matters
Knowing your exact screen size helps when buying:
- Laptop sleeves
- Laptop bags
- Screen protectors
- Privacy screens
- Replacement displays
- External monitor accessories
A small measurement mistake can lead to compatibility issues.
Frequently Asked Questions
How to Measure Laptop Screen Size
Question: How do you measure laptop screen size correctly?
Answer:
To measure a laptop screen size correctly, measure the visible display diagonally from one corner to the opposite corner. Do not include the bezel or outer frame. The measurement in inches represents the laptop’s official screen size.
Question: Does laptop screen size include the bezel?
Answer:
No, laptop screen size does not include the bezel. Only the active display area is measured. Including the bezel can result in an inaccurate screen size measurement.
Question: Can I find my laptop screen size without measuring it?
Answer:
Yes. You can find your laptop screen size by checking the model number, viewing the manufacturer’s specifications page, checking your purchase receipt, or looking up the device details online.
Question: What is the most common laptop screen size?
Answer:
The most common laptop screen size is 15.6 inches. It offers a good balance between portability, productivity, and entertainment.
Question: How do manufacturers measure laptop screens?
Answer:
Laptop manufacturers measure screens diagonally from one visible corner of the display to the opposite corner. This industry-standard method is used worldwide.
Final Thoughts
Learning how to measure laptop screen size is easier than most people think. Simply measure the visible display diagonally from corner to corner and ignore the bezel or outer frame. This gives you the exact screen size used by manufacturers.
Whether you’re buying a laptop bag, screen protector, replacement display, or comparing different laptop models, knowing the correct screen size helps you make better decisions and avoid costly mistakes.
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