Megabits per Second to Kilobytes per Second (Mbps to kB/s)
1 megabit per second (Mbps) = 125 kilobytes per second (kB/s). 1 kB/s = 0.008 Mbps. Example: 15 Mbps = 15 × 125 = 1875 kB/s.
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1 Mbps = 125 kB/s
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk megabit per second to kilobyte per second converter to paste a column from Excel.
How to Convert Megabit per Second to Kilobyte per Second
- 1 Mbps = 125 kB/s
- 1 kB/s = 0.008 Mbps
- Example: convert 15 Mbps to kB/s: 15 Mbps = 15 × 125 kB/s = 1875 kB/s
Formula
kB/s = Mbps × 125
Derivation from SI units:
- 1 Mbit/s = 10⁶ bit/s.
- 1 kB/s = 1000 B/s = 8000 bit/s.
- 1 Mbps = 1000000 bps ÷ 8000 bps per kB/s = 125 kB/s
Both units are defined exactly, so the factor is exact. Megabit per Second definition: megabit per second; Kilobyte per Second definition: kilobyte per second.
Worked examples
- A reading of 25 Mbps converts to 3125 kB/s.
25 Mbps × 125 = 3125 kB/s - A value of 200 Mbps is 25000 kB/s.
200 Mbps × 125 = 25000 kB/s
Megabit per Second to Kilobyte per Second conversion table
| Megabits per Second (Mbps) | Kilobytes per Second (kB/s) |
|---|---|
| 1 Mbps | 125 kB/s |
| 5 Mbps | 625 kB/s |
| 10 Mbps | 1250 kB/s |
| 25 Mbps | 3125 kB/s |
| 50 Mbps | 6250 kB/s |
| 100 Mbps | 12500 kB/s |
| 200 Mbps | 25000 kB/s |
| 300 Mbps | 37500 kB/s |
| 500 Mbps | 62500 kB/s |
| 1000 Mbps | 125000 kB/s |
Where it's used
Megabits per Second are used for internet plans and speed tests, while kilobytes per second appear in download speeds on slow links. Both measure data transfer rate (bandwidth), so the conversion is a fixed factor.
Megabit per Second to other data transfer rate units
| Conversion | 1 Mbps equals |
|---|---|
| megabit per second to kilobyte per second | 125 kB/s |
| megabit per second to megabyte per second | 0.125 MB/s |
| megabit per second to kilobit per second | 1000 kbps |
| megabit per second to gigabit per second | 0.001 Gbps |
| megabit per second to gigabyte per second | 0.000125 GB/s |
| megabit per second to bit per second | 1000000 bps |
| megabit per second to byte per second | 125000 B/s |
| megabit per second to mebibyte per second | 0.1192092896 MiB/s |
Show 2 more units
| megabit per second to terabit per second | 0.000001 Tbps |
|---|---|
| megabit per second to kibibyte per second | 122.0703125 KiB/s |
Frequently asked questions
How many kilobytes per second are in 1 megabit per second?
1 Mbps = 125 kB/s.
How do I convert megabits per second to kilobytes per second?
Multiply the value in Mbps by 125. For example, 15 Mbps × 125 = 1875 kB/s.
Is the Mbps to kB/s conversion exact?
Yes. Both units are defined exactly, and 1 Mbps is exactly 125 kB/s.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7 (SI prefixes); hertz, Table 4.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Megabits per Second to Kilobytes per Second (Mbps to kB/s). Retrieved October 25, 2026, from https://scientificconverters.com/data-rate/megabits-per-second-to-kilobytes-per-second/
IEEE
Scientific Converters, "Megabits per Second to Kilobytes per Second (Mbps to kB/s)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/data-rate/megabits-per-second-to-kilobytes-per-second/