Data Transfer Rate Converter
Convert between any two bit/second units in your browser — instant, accurate, and private.
Example
1 bps = 0.001 Kbps. Switch the unit menus to convert between any pair.
How it works
Every value is converted through a single bit/second base unit using internationally defined conversion factors, so any from/to pair stays consistent.
Good to know
The single most useful thing this converter does is translate between bits and bytes per second — the gap that confuses nearly everyone reading a speed test or a download estimate. Internet providers advertise plans in megabits per second (Mbps), because bigger-sounding numbers sell better, while your download manager and operating system report progress in megabytes per second (MB/s). Since one byte is 8 bits, your 100 Mbps connection tops out at roughly 12.5 MB/s, not 100 — a factor-of-8 difference that catches people off guard every day.
The unit families here come from two conventions layered on top of each other. The bit/byte split is one axis: lowercase "b" means bit, uppercase "B" means byte. The prefix is the other axis, and in networking the kilo/mega/giga prefixes are decimal SI multiples — 1 Kbps is exactly 1,000 bps and 1 Mbps is exactly 1,000,000 bps — unlike file sizes on disk, where kilobyte and megabyte are often the binary 1,024-based values. This converter uses the decimal definitions standard for transfer rates, so the math stays clean and predictable across every from/to pair.
The rule of thumb worth memorizing: to go from a bit-rate to a byte-rate, divide by 8; to go the other way, multiply by 8. So a 24 Mbps stream is about 3 MB/s, and a 50 MB/s drive copy is around 400 Mbps. For a quick gut check, drop one prefix level: 1,000 Mbps equals 1 Gbps, and 1,000 KB/s equals 1 MB/s.
The classic mistake is mixing the bit/byte conversion with the prefix conversion and dividing by 8,000 instead of 8 — or assuming "1 GB will download in 1 second on gigabit." A 1 Gbps line is 125 MB/s in theory, so a 1 GB (≈1,000 MB) file needs about 8 seconds of pure transfer time, before protocol overhead, latency, and the speed of the slower endpoint slow it further. Treat every converted figure as a theoretical ceiling, not a guaranteed real-world rate.
Frequently asked questions
What does the data transfer rate converter do?
It converts between common bit per second units instantly. Pick a unit to convert from and a unit to convert to, type a value, and the result updates live.
Which units does this converter support?
It includes 7 units: Bit/second, Kilobit/second, Megabit/second, Gigabit/second, Byte/second, Kilobyte/second, Megabyte/second.
Is this converter free and private?
Yes. It runs entirely in your browser, so your inputs never leave your device, there is no sign-up, and it works offline once loaded.
Are the conversions exact?
Conversions use internationally defined factors and are exact where the definitions are exact (for example, 1 inch = 2.54 cm). Displayed results are rounded for readability.
People also ask
How many MB/s is 100 Mbps?
100 Mbps equals 12.5 MB/s, because you divide the bit rate by 8 (100 ÷ 8 = 12.5). A 1 GB file would take roughly 80 seconds to download at that speed in ideal conditions.
What is the difference between Mbps and MB/s?
Mbps is megabits per second (lowercase b) and MB/s is megabytes per second (uppercase B). One byte is 8 bits, so MB/s is always 8 times larger than Mbps for the same connection — 80 Mbps is 10 MB/s.
How many Mbps are in 1 Gbps?
1 Gbps equals 1,000 Mbps, since transfer-rate prefixes are decimal (1 Gbps = 1,000,000,000 bits per second). So gigabit internet is ten times faster than a 100 Mbps plan.
How fast can I download a 1 GB file on 1 Gbps?
At 1 Gbps you get about 125 MB/s, so a 1 GB (≈1,000 MB) file needs roughly 8 seconds of transfer time. Real downloads take longer because of latency, overhead, and server limits.
Is 50 Mbps fast enough for 4K streaming?
Yes — 4K streaming typically needs about 25 Mbps, so 50 Mbps (6.25 MB/s) comfortably handles one or even two 4K streams at once, with headroom for other devices.
How do I convert KB/s to Mbps?
Multiply KB/s by 8 to get Kbps, then divide by 1,000 to get Mbps. For example, 500 KB/s is 4,000 Kbps, which equals 4 Mbps.
Why is my download speed lower than my internet plan?
Plans are sold in megabits while downloads display in megabytes, an 8x difference, so a 200 Mbps plan shows around 25 MB/s at best. Overhead, Wi-Fi, and server-side limits then reduce it further.
How many Gbps is 1000 Mbps?
1,000 Mbps equals exactly 1 Gbps, because giga is 1,000 times mega in decimal prefix terms. That is the same as 125 MB/s.
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