What is being measured?
Data rate is data quantity per time. Bits and bytes, and decimal and binary prefixes, must remain explicit when comparing a network rate with file size.
Lowercase b means bits and uppercase B means bytes. k/M/G prefixes here are decimal.
Meaning of kB/s
kb per second uses the symbol kB/s in this library and measures data rate. Under the stated reference convention, 1 kB/s = approximately 8000 bit/s. This equivalence changes how a known value is written. It does not increase measurement accuracy or establish whether a measurement is appropriate to a real application.
Conversion method
Multiply the value by the source factor (8000), then divide by the target factor (1). The factor ratio expresses the same data rate measurement in the other unit.
Worked example
For a known value of 10 kB/s, the reference conversion gives 80000 bit/s. Converting that result back gives approximately 10 kB/s. This reverse check helps catch a reversed factor, but matching round-trip arithmetic alone does not independently verify a source definition.
Common reference values
| Input (kB/s) | Reference equivalent (bit/s) |
|---|---|
| 1 | 8000 |
| 5 | 40000 |
| 10 | 80000 |
| 25 | 200000 |
| 50 | 400000 |
| 100 | 800000 |
Compare one kB/s with other units
| Target unit | Equivalent of 1 kB/s | Definition guide |
|---|---|---|
| bps (bit/s) | 8000 | Read definition |
| kbps (kbit/s) | 8 | Read definition |
| mbps (Mbit/s) | 0.008 | Read definition |
| gbps (Gbit/s) | 0.000008 | Read definition |
| bytes per second (B/s) | 1000 | Read definition |
| mb per second (MB/s) | 0.001 | Read definition |
| gb per second (GB/s) | 0.000001 | Read definition |
Precision and common mistakes
- Keep the source and target quantity consistent. A matching symbol is not enough to establish a compatible definition.
- Record the original measurement precision. Showing twelve significant digits in a table does not make a rounded input more precise.
- Check symbol capitalization, prefixes and any regional convention in the source. Use the displayed unit definition rather than a similarly named unit.
- Factors involving repeating fractions or π use finite numerical precision. Round the final answer to the precision justified by your input.
Use a working converter
- Data rate converter
- Kb per second to bps converter
- Kb per second to kbps converter
- Kb per second to mbps converter
- Kb per second to gbps converter
- Kb per second to bytes per second converter
Source and verification scope
Examples and tables are computed from the versioned unit definitions used by the linked converters. The source access dates appear below. Computandum is independent of the cited organizations; a citation does not mean that a publisher endorses this page or an actual project.
Sources
- NIST / BIPM: NIST: unit conversion factors ↗ · 2026-10-08
- NIST: Binary prefixes ↗ · 2026-10-09