# Data Transfer Rate Converter

> Convert between bits/second, bytes/second, kbps, Mbps, Gbps, kB/s, MB/s, GB/s, and more.

URL: https://uttir.com/data-transfer-converter
Categories: converters, math-tools, network-tools
Privacy: Conversions run locally in your browser. No values are sent anywhere.

## About

Data rates come in two flavors: bits per second (used in networking and ISP marketing) and bytes per second (used in file transfer and download managers). 1 byte = 8 bits. Within each flavor, the SI decimal prefixes apply: 1 kbit/s = 1,000 bit/s, 1 Mbit/s = 1,000 kbit/s, and so on.

This converter uses bit/s as the base and handles all the common combinations.

## How to use

1. **Enter a value** — Type the rate in any supported unit. The default is 1 Mbit/s.
2. **Pick the units** — The from/to dropdowns cover bit/s, kbit/s, Mbit/s, Gbit/s, Tbit/s, and the same range in bytes (B/s through TB/s).
3. **Note the case** — A lowercase "b" means bits (kbit/s); an uppercase "B" means bytes (kB/s). The factor is 8 between them.

## Examples

### 100 Mbps internet → MB/s download

A 100 Mbps connection (ISP quote) downloads at about 12.5 MB/s (file transfer speed).

Input:

```
100 Mbit/s
```

Output:

```
≈ 12.5 MB/s
```

## FAQ

### Why does my 100 Mbps connection only download at 12.5 MB/s?

The ISP quotes bits per second (Mbit/s); the download manager shows bytes per second (MB/s). 8 bits = 1 byte, so 100 Mbit/s = 12.5 MB/s. The connection is not slow — the units differ.

### How much bandwidth do I need for 4K streaming?

4K HDR streams need 25-50 Mbps. 4K SDR needs 15-25 Mbps. HD needs 5-10 Mbps. SD needs 3-5 Mbps.

### Are kbps and KB/s the same?

No. kbps = kilobits per second. KB/s = kilobytes per second. They differ by a factor of 8.

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For the full HTML page with the live tool, visit https://uttir.com/data-transfer-converter.
This file is the markdown rendering at https://uttir.com/data-transfer-converter.md. See https://uttir.com/llms.txt for a site-wide summary.