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How to test the read and write speeds of your SD card
In This Article
If you’re looking to test the read and write speed on an SD card, you’ve come to the right place.
You can find the read and write speed of your SD card printed on the card, but you can also experience those speeds yourself using a device you probably already have at home – your PC. Windows 10 and 11 offer a built-in tool that allows you to monitor the read and write speeds of your SD cards on your PC or laptop in real-time.
Keep reading to learn how to test your own SD cards at home.
What you’ll need
The Short Version
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How to test the read and write speeds of your SD card
Step1
Open up Task Manager
You can find this app pre-installed on any Windows PC. You’ll also want to insert your SD card into the slot on your laptop if you haven’t already done so.
Step2
Go to the Performance tab
This is the tab on the left hand side of the Task Manager. If you’re not sure which is which, just hover over the icons until you find the one labelled Performance.
Step3
Select your SD card
If you’re not sure which one is your SD card, you can check in the File Explorer. Alternatively, you can disconnect and reconnect your SD card and check the notification in the bottom right corner.
Step4
Look toward the bottom of the screen
This is where you’ll find the read and write speeds! Transfer files to/from the SD card to see these numbers change in real-time.
Troubleshooting
If you want to learn more about your SD card, including more in-depth results for your read and write tests, you may want to look into investing in third-party software designed for this purpose.
If your laptop doesn’t include an SD slot, we’d recommend picking up a card reader or adapter that supports SD cards.
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Hannah joined Trusted Reviews as a staff writer in 2019 after graduating with a degree in English from Royal Holloway, University of London. She’s also worked and studied in the US, holding positions …
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Founded in 2003, Trusted Reviews exists to give our readers thorough, unbiased and independent advice on what to buy.
Today, we have millions of users a month from around the world, and assess more than 1,000 products a year.
Editorial independence means being able to give an unbiased verdict about a product or company, with the avoidance of conflicts of interest. To ensure this is possible, every member of the editorial staff follows a clear code of conduct.
We also expect our journalists to follow clear ethical standards in their work. Our staff members must strive for honesty and accuracy in everything they do. We follow the IPSO Editors’ code of practice to underpin these standards.
