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SDHC vs SDXC: What’s The Main Difference?
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SDHC and SDXC both are different variants of SD which stands for Secure Digital. SD cards are used in a variety of devices such as computers, cameras, smartphones, tech devices, etc. These cards are used to store and share data in a convenient way.

But many people get confused between SDHC and SDXC because they sound and seem to be similar. And they confuse which one to buy.

If you also get mix up with these two types of cards, read this article completely.


SDHC is Secure Digital High Capacity and SDXC is Secure Digital Xtended Capacity.


  • SD cards have a capacity of up to 2 GB.
  • Whereas SDHC has a maximum storage capacity of 32 GB.
  • And, SDXC has a maximum of 2 TB.

I hope, now you understand the difference between these SD cards. If a device supports SDXC then it will also support SDHC and normal SD cards.

Speed Classes

Every card comes with a dedicated speed classes ranging from 2, 4, 6 and 10. 2 being the slowest and 10 being the fastest class of data transfer. Many a time you have seen the same 2GB SD card transfers data faster than other 2GB cards. This is because of the difference in speed class.

Higher class cards come a bit expensive but they hold features like high-speed data transfer and optional extended warranty etc.

Which One Should You Buy?

So you have clearly understood the difference between these cards.

This truly depends on your needs. If you need to back up small files which are less than 2 GB then simple SD cards will be the best option for you.

If you need to store data somewhere between 2Gb to 32 Gb then SDHC will the right option for you.

But if you want to back all your data from phone to computer then SDXC with a higher speed class should be your priority.

Bottom Line

Although, you won’t have to purchase SD cards for your phone as now smartphones come with an inbuilt storage capacity of 4GB, 8GB, 16GB, 32GB, 64GB, 128GB, 256GB, 512GB and even in TBs.

I hope this quick article on SDHC vs SDXC has cleared your thoughts and now there should be no confusion related to this.

If you found this article helpful, do let me know in the comments below.

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