Megabyte per second to Terabit per second
MBps
Tbps
Conversion History
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Quick Reference Table (Megabyte per second to Terabit per second)
| Megabyte per second (MBps) | Terabit per second (Tbps) |
|---|---|
| 1 | 0.000008 |
| 12.5 | 0.0001 |
| 50 | 0.0004 |
| 100 | 0.0008 |
| 500 | 0.004 |
| 1,000 | 0.008 |
| 7,000 | 0.056 |
About Megabyte per second (MBps)
A megabyte per second (MB/s or MBps) equals 8,000,000 bits per second and is the practical unit that most users encounter when watching a download progress bar. A 100 Mbps broadband connection downloads at up to 12.5 MB/s; a USB 3.0 drive transfers at 50–100 MB/s; an NVMe SSD reads at 3,000–7,000 MB/s. Understanding MB/s alongside Mbps resolves the common frustration of seeing a "1 Gbps" plan deliver "only" 125 MB/s — the two figures are consistent, not contradictory.
A 100 Mbps home broadband plan delivers up to 12.5 MB/s in a download manager. A USB 3.2 flash drive typically writes at 50–200 MB/s.
About Terabit per second (Tbps)
A terabit per second (Tbps) equals 1,000 Gbps and is the unit of internet backbone and submarine cable capacity. Transoceanic fiber cables carry hundreds of terabits per second in aggregate across multiple wavelengths using dense wavelength-division multiplexing (DWDM). The global internet collectively carries several hundred Tbps at peak. Individual backbone router links at major exchange points operate at 100–400 Gbps, with Tbps links emerging in the largest facilities.
A single modern transoceanic submarine cable can carry 200–400 Tbps of aggregate capacity. Major internet exchange points like DE-CIX in Frankfurt peak at over 10 Tbps.
Megabyte per second – Frequently Asked Questions
Why does copying files to a USB drive slow down partway through?
Many USB drives use a small SLC cache for initial writes at high MB/s, then slow dramatically once the cache fills and data writes to slower TLC/QLC NAND. A drive that starts at 200 MB/s might drop to 20–30 MB/s after the first few gigabytes. Check sustained write speed reviews, not just peak numbers.
What MB/s do I need for video editing?
Editing 4K ProRes footage requires about 200–400 MB/s of sustained read speed. 8K RAW can demand 1,000+ MB/s. A SATA SSD (550 MB/s) handles 4K fine, but 8K workflows really need NVMe drives at 3,000+ MB/s. The timeline scrubbing experience directly correlates with MB/s.
How do I tell if a speed test result is in MB/s or Mbps?
Look at the capitalisation: lowercase "b" (Mbps) means megabits, uppercase "B" (MB/s) means megabytes. Most speed test websites (Speedtest by Ookla, fast.com) default to Mbps. If your result seems 8× lower than expected, you are probably reading MB/s where you expected Mbps.
What is the fastest consumer storage in MB/s as of 2026?
PCIe 5.0 NVMe SSDs hit 12,000–14,000 MB/s sequential read speeds. That is fast enough to load an entire 50 GB game in about 4 seconds. PCIe 6.0 drives, expected soon, will double this again to roughly 25,000 MB/s.
Why is network file sharing slower than local disk speed?
Network transfers add latency, protocol overhead (SMB, NFS), and are limited by the network link speed. A file on a local NVMe SSD reads at 7,000 MB/s, but sharing it over a 1 Gbps network caps throughput at 125 MB/s. Even 10 GbE only gives 1,250 MB/s — a fraction of modern SSD capability.
Terabit per second – Frequently Asked Questions
How much data does the entire internet carry per second?
Global internet traffic peaks at roughly 1,000–1,500 Tbps (1–1.5 Pbps) as of 2026. This is growing at about 25% per year, driven by video streaming, cloud computing, and AI training data transfers. A single viral live event can spike regional traffic by tens of Tbps.
What happens if a submarine cable carrying Tbps of data gets cut?
Internet traffic automatically reroutes through other cables and paths via BGP routing protocols, usually within seconds. Speed may degrade in the affected region but rarely drops entirely. Cable cuts happen more often than people think — about 100 per year globally, mostly from ship anchors and fishing trawlers.
How do submarine cables achieve hundreds of Tbps?
Dense wavelength-division multiplexing (DWDM) sends dozens of different light colors (wavelengths) through a single fiber simultaneously, each carrying its own data stream. A modern cable contains multiple fiber pairs, each carrying 100+ wavelengths, with each wavelength modulated at 400 Gbps or more.
Could a single Tbps connection download all of Netflix?
Netflix's library is estimated at around 30–40 petabytes. At 1 Tbps, downloading the entire catalog would take roughly 70–90 hours. At 100 Tbps (a realistic submarine cable capacity), you could theoretically grab all of Netflix in under an hour.
What is the fastest data transfer ever achieved in a lab?
Researchers at Japan's NICT achieved 22.9 Pbps (22,900 Tbps) through a single multicore fiber in 2024. That is enough to transfer the entire Library of Congress in a fraction of a second. These lab records typically reach commercial deployment 5–10 years later.