Convert Kilobits per second to Bytes per second
Convert Kilobits per second (kbit/s) to Bytes per second (B/s) instantly and accurately.
Conversion Formula
B/s = kbit/s × 125
About Kilobits per second
Kilobit per second (kbit/s) = 1,000 bit/s (SI). The classic unit for narrowband telecoms: dial-up (V.90) = 56 kbit/s; ISDN BRI = 64-128 kbit/s; G.711 VoIP = 64 kbit/s; Opus (WhatsApp, Discord) = 6-510 kbit/s adaptive; Bluetooth Classic = 1,000 kbit/s; Zigbee/Z-Wave = 20-250 kbit/s. 1 kbit/s = 1,000 bit/s = 125 B/s.
About Bytes per second
Byte per second (B/s) = 8 bit/s. The natural unit for file transfer speeds, disk I/O, and memory bandwidth reported by OS tools and storage benchmarks. ISP 'Mbit/s' ÷ 8 = MB/s download speed: a 100 Mbit/s connection delivers ≈ 12.5 MB/s. USB 2.0 = 60 MB/s; SATA III = 600 MB/s; Thunderbolt 4 = 5,000 MB/s. 1 B/s = 8 bit/s.
Quick Reference Table
| Kilobits per second (kbit/s) | Bytes per second (B/s) |
|---|---|
| 1 kbit/s | 125 B/s |
| 2 kbit/s | 250 B/s |
| 5 kbit/s | 625 B/s |
| 10 kbit/s | 1250 B/s |
| 25 kbit/s | 3125 B/s |
| 50 kbit/s | 6250 B/s |
| 100 kbit/s | 12500 B/s |