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Network Engineer

Data Transfer Rate Converter

Use this data transfer rate converter entirely in your browser.

Result12.5 MB/s

100 Mbps equals 12.5 MB/s.

Uses decimal SI prefixes and 1 byte = 8 bits.

Calculations happen locally in your browser.

Bits, bytes, and real transfer rates

Network connections are normally advertised in bits per second, while browsers and storage tools often report bytes per second. Eight bits make one byte, so converting Mbps to MB/s divides by eight.

100 Mbps 12.5 MB/s
Common decimal network-rate conversions
Network rateMaximum MB/sMaximum GB/s
10 Mbps1.250.001
50 Mbps6.250.006
100 Mbps12.50.013
300 Mbps37.50.038
1,000 Mbps1250.125

These are mathematical line-rate conversions. Protocol headers, Wi-Fi conditions, storage speed, server limits, congestion, and encryption can reduce observed application throughput.

How to use this calculator

  1. Enter the labelled values and review the live result.
  2. Review the live result and use Copy result when you need to share it.

How the calculation works

Each rate is converted through bits per second using decimal SI prefixes and eight bits per byte.

Formula

Each rate is converted through bits per second using decimal SI prefixes and eight bits per byte.

Step-by-step calculation

  1. Enter the labelled values and review the live result.
  2. Each rate is converted through bits per second using decimal SI prefixes and eight bits per byte.
  3. Check the displayed result, then copy it if needed.

Worked example

100 Mbps equals 12.5 MB/s.

Methodology and review

Who this is for

People comparing network and storage transfer rates.

Inputs and units

  • Value
  • From and to rate units

Method

The converter normalises every value to bits per second, applies decimal SI prefixes, and divides or multiplies by eight when crossing between bits and bytes.

Worked example

100 Mbps ÷ 8 = 12.5 MB/s before overhead.

Assumptions

  • Network-rate prefixes are decimal: kilo is 1,000 and mega is 1,000,000.
  • The displayed rate is a theoretical quantity before protocol and device overhead.

Common mistakes

  • Treating Mbps as MB/s
  • Mixing a rate with a file size

Limitations

  • A data rate is not a file size; transfer duration also needs a file size and an effective rate.
  • Measured throughput can be lower because of Wi-Fi conditions, congestion, retransmission, encryption, and protocol overhead.

How this tool was checked

Release tests check bit/byte conversions and representative decimal-prefix fixtures, including 100 Mbps = 12.5 MB/s.

Reference sources

Related tools

Calculation review: 21 August 2026. Published by Goldwave Dynamics Limited. This is an internal product review, not an independent certification.

Risk guidance

Frequently asked questions

Does this tool send my inputs anywhere?

No. The interactive calculation runs in your browser and this site does not submit tool inputs to a backend.

How should I use the result?

Check that the entered units and values match your situation, especially around dates, breaks, and rounding.

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