Kilobyte per Second (kB/s)
A kilobyte per second is 1000 bytes each second, 8 kbit/s. Browsers and download managers show slow transfers in kB/s.
Symbol: kB/s
Quantity: data transfer rate (bandwidth)
SI relation: 1 kB/s = 8000 bps (exact)
Derivation: 1 kB/s = 1000 B/s = 8000 bit/s.
Exact: yes, by definition
Typical uses
- Download speeds on slow links
- Sensor and logging data rates
Convert kilobytes per second to other units
Open the Data Transfer Rate Converter to convert any value between all units.
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). Kilobyte per Second (kB/s). Retrieved October 25, 2026, from https://scientificconverters.com/units/kilobyte-per-second/
IEEE
Scientific Converters, "Kilobyte per Second (kB/s)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/units/kilobyte-per-second/