Mbps vs. MBps: internet speeds explained | ShopHighSpeed
Guides · Explainer

Mbps vs. MBps: internet speeds explained

Your 100 Mbps plan downloading at 12.5 MB/s is correct, not broken. The one-letter difference that confuses everyone, explained.

Maya Ortiz · Home internet editor
Published May 15, 2026 · Updated Jul 14, 2026 · 3 min read
A speed test result on a laptop screen. Click to edit this caption.
The short answer

Internet plans are sold in megabits per second (Mbps); file sizes and download managers use megabytes per second (MBps). There are 8 bits in a byte, so a 100 Mbps plan downloads at about 12.5 MB per second. Same speed, different unit.

{{ sec.h2 }}

{{ para }}

  • {{ b }}

Now that the units make sense, figure out what speed you actually need.

More on this topic
Glossary of internet terms Data usage calculator
Check what's available at your address
See real providers and prices in your ZIP.
Check now →
Home internet editor

Maya has reviewed home internet plans for a decade and tests every service on the same connected household to compare real-world performance — no provider pays for placement.

Keep reading

See providers at your address Check →