What’s the Difference Between SD and Micro SD Memory

The main difference between SD and Micro SD memory cards lies in their size and compatibility:


  • SD cards: 24mm x 32mm x 2.1mm (larger)
  • Micro SD cards: 11mm x 15mm x 1mm (much smaller)


  • SD cards: Used in cameras, laptops, camcorders, and other larger devices.
  • Micro SD cards: Used in smartphones, tablets, action cameras, drones, and other smaller devices.

Additional Differences:

  • Capacity: Both types offer similar storage capacities, ranging from 2GB to 2TB.
  • Adapter: Micro SD cards often come with an SD adapter, allowing them to be used in devices that only accept SD cards.
  • Performance: Both types offer similar read/write speeds, although high-performance SD cards may be slightly faster.

Here’s a table summarizing the key differences:

Feature SD Card Micro SD Card
Size Larger Smaller
Dimensions (mm) 24 x 32 x 2.1 11 x 15 x 1
Typical Devices Cameras, laptops, camcorders Smartphones, tablets, action cameras
Adapter Typically not included Often included
Performance Similar, high-performance SD may be slightly faster
Price Similar

Choosing the Right Card:

The best choice for you depends on the device you’ll be using it with. If you need a card for a larger device like a camera or laptop, go with an SD card. For smaller devices like smartphones and action cameras, a Micro SD card is the ideal choice.

I hope this clarifies the difference between SD and Micro SD memory cards! Let me know if you have any other questions.