# Umrechner für Datenraten (Mbps in MB/s)

> Rechnen Sie Mbps in MB/s, Gbps in MB/s und kbps in kB/s um. Netzgeschwindigkeiten stehen in Bits pro Sekunde, Dateigrößen und Downloadanzeigen in Bytes.

Interaktive Version: https://www.calcopenly.com/de/conversion/data-transfer-rate-converter
Thema: Einheitenumrechner

Network speeds are quoted in bits per second and file sizes in bytes, and a byte is 8 bits, so megabits per second divide by 8 to give megabytes per second. Each rate unit is a fixed number of bits per second, with decimal prefixes (1 Mbit/s = 10⁶ bit/s) kept apart from binary ones (1 MiB/s = 2²⁰ bytes per second).

The default converts a 100 Mbit/s broadband plan to 12.5 MB/s, the most a download can show in megabytes per second, or 11.92 MiB/s in a program that counts in binary units. A 1 Gbit/s connection tops out at 125 MB/s.

Real transfers run below the line rate because every packet carries headers: over Ethernet with TCP/IPv4, at most 1,460 of every 1,538 bytes on the wire are data, 94.9%. The download time calculator applies that overhead to a file size.

## Eingaben

- **Wert**: Eine Zahl in der Ausgangseinheit oder mit eigener Einheitenangabe
- **Von** (Optionen: bit per second (bit/s), kilobit per second (kbit/s), megabit per second (Mbit/s), gigabit per second (Gbit/s), terabit per second (Tbit/s), byte per second (B/s), kilobyte per second (kB/s), megabyte per second (MB/s), gigabyte per second (GB/s), kibibyte per second (KiB/s), mebibyte per second (MiB/s), gibibyte per second (GiB/s))
- **Nach** (Optionen: bit per second (bit/s), kilobit per second (kbit/s), megabit per second (Mbit/s), gigabit per second (Gbit/s), terabit per second (Tbit/s), byte per second (B/s), kilobyte per second (kB/s), megabyte per second (MB/s), gigabyte per second (GB/s), kibibyte per second (KiB/s), mebibyte per second (MiB/s), gibibyte per second (GiB/s))

## Ergebnisse

- Umgerechneter Wert — Hauptergebnis
- Umrechnung
- Umrechnungsfaktor
- Genauigkeit

## Formel

$$
\begin{gathered} x_{\text{to}} = x_{\text{from}} \times \dfrac{f_{\text{from}}}{f_{\text{to}}} \\ f = \text{one unit expressed in } \text{bit/s} \end{gathered}
$$

## Durchgerechnete Beispiele

### 100 Mbit/s in MB/s

- Wert: 100 Mbit/s
- Von: megabit per second (Mbit/s)
- Nach: megabyte per second (MB/s)
- **Umgerechneter Wert: 12.5 MB/s**
- Prüfquelle: 100 × 10⁶ bit/s ÷ 8 bit/B ÷ 10⁶ = 12.5

### 1 Gbit/s in MB/s

- Wert: 1 Gbit/s
- Von: gigabit per second (Gbit/s)
- Nach: megabyte per second (MB/s)
- **Umgerechneter Wert: 125 MB/s**
- Prüfquelle: 10⁹ / 8 / 10⁶ = 125

### 1 MiB/s in Mbit/s

- Wert: 1 MiB/s
- Von: mebibyte per second (MiB/s)
- Nach: megabit per second (Mbit/s)
- **Umgerechneter Wert: 8.388608 Mbit/s**
- Prüfquelle: 2²⁰ × 8 / 10⁶ = 8.388608

### 1 bit/s in kB/s (tiny value)

- Wert: 1 bit/s
- Von: bit per second (bit/s)
- Nach: kilobyte per second (kB/s)
- **Umgerechneter Wert: 0.000125 kB/s**
- Prüfquelle: 1 / 8 / 1000 = 0.000125

## Fragen

### How many MB/s is 100 Mbps?

12.5 MB/s. Divide megabits per second by 8, because a byte is 8 bits: 100 ÷ 8 = 12.5. Programs that count in binary units show 11.92 MiB/s for the same speed, and protocol overhead takes about another 5%, so expect around 11.9 MB/s on a wired 100 Mbit/s link.

### What is the difference between Mbps and MBps?

Mbps (Mbit/s) is megabits per second; MBps (MB/s) is megabytes per second, 8 times larger. Internet plans and Wi-Fi speeds are sold in Mbps, while browsers and download managers usually show MB/s, so a 50 Mbps plan appears as 6.25 MB/s. The case of the b is the only visible difference.

### How fast is 1 Gbps in MB/s?

125 MB/s: 1,000,000,000 bits ÷ 8 = 125,000,000 bytes per second, which is 119.21 MiB/s in binary units. At that rate a 50 GB download takes 400 seconds, 6 min 40 s, before protocol overhead is added.

### Why is my download slower than my internet speed?

Part of the gap is units and part is overhead. A plan quoted at 100 Mbit/s is 12.5 MB/s at most, and TCP/IP and Ethernet headers use about 5% of that, leaving about 11.9 MB/s. Wi-Fi signal, the far server and other devices on the connection reduce it further, which this converter does not model.

### How many Mbps is 1 MiB/s?

8.388608 Mbit/s. One MiB/s is 1,048,576 bytes per second, and 1,048,576 × 8 = 8,388,608 bits per second. A tool that reports MiB/s therefore shows a number 4.6% lower than the same speed in MB/s.

### Wie genau arbeitet „Umrechner für Datenraten (Mbps in MB/s)“?

Die Genauigkeit hängt von Ihren Eingaben und den Annahmen der Methode ab. Die Dezimalrechnung nutzt 50 signifikante Stellen, doch Schätzungen, numerische Verfahren und Quelldaten können ungenauer sein. Die angezeigte Rundung beseitigt diese Grenzen nicht. Anhand unabhängiger Quellen geprüfte Rechenbeispiele: 4. Beispielsweise wird „100 Mbit/s in MB/s“ anhand von 100 × 10⁶ bit/s ÷ 8 bit/B ÷ 10⁶ = 12.5 geprüft.

### Woher stammt die Methode?

NIST SP 811 (2008), Guide for the Use of the SI, Appendix B — conversion factors; NIST Handbook 44, Appendix C — General tables of units of measurement; NIST — Prefixes for binary multiples (IEC 80000-13).

## Quellen

- [NIST SP 811 (2008), Guide for the Use of the SI, Appendix B — conversion factors](https://www.nist.gov/pml/special-publication-811)
- [NIST Handbook 44, Appendix C — General tables of units of measurement](https://www.nist.gov/pml/owm/nist-handbook-44-current-edition)
- [NIST — Prefixes for binary multiples (IEC 80000-13)](https://physics.nist.gov/cuu/Units/binary.html)