Explains the distinction between decimal prefixes such as MB and binary prefixes such as MiB.
Dedicated unit pair
Megabits per second to Gigabits per second
Convert Mb/s to Gb/s instantly, then review the formula, assumptions, and rounding guidance.
Data-transfer speedInstant result
Decimals
Formula result = input × 1000000 ÷ 1000000000. 1 Mb/s = 0.001 Gb/s
Common examples
One value, several units
Bits per second1,000,000 bit/s
Kilobits per second1,000 kb/s
Gigabits per second0.001 Gb/s
Kilobytes per second125 kB/s
Megabytes per second0.125 MB/s
Conversion table
| Mb/s | Gb/s |
|---|---|
| 1 Mb/s | 0.001 Gb/s |
| 2 Mb/s | 0.002 Gb/s |
| 5 Mb/s | 0.005 Gb/s |
| 10 Mb/s | 0.01 Gb/s |
| 25 Mb/s | 0.025 Gb/s |
| 50 Mb/s | 0.05 Gb/s |
| 100 Mb/s | 0.1 Gb/s |
Conversion chart
1 Mb/s0.001 Gb/s
5 Mb/s0.005 Gb/s
10 Mb/s0.01 Gb/s
25 Mb/s0.025 Gb/s
50 Mb/s0.05 Gb/s
Worked example
100 Mb/s equals 12.5 MB/s.
Unit definition
Megabits per second (Mb/s) One megabits per second equals 1,000,000 bit per second.
Unit history
Megabits per second is represented here using its modern SI definition or an internationally accepted relationship to an SI base unit.
Step by step
1. Parse the value, including fractions.
2. Convert Mb/s to bit per second.
3. Convert the base value to Gb/s and apply your display precision.
Understand the result before using it
Megabits per second to Gigabits per second converts a value measured in Megabits per second (Mb/s) into the equivalent value in Gigabits per second (Gb/s). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input × 1000000 ÷ 1000000000
Assumptions
- Megabits per second and Gigabits per second represent the same data-transfer speed quantity.
- The input is expressed in Mb/s; the output is expressed in Gb/s.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 Mb/s = 0.001 Gb/s. For another value, apply the same relationship and round only to the precision your source measurement supports.
When to use it
Good uses
- Read a Mb/s measurement in a document that expects Gb/s.
- Compare a megabits per second value with a value reported in gigabits per second.
- Check the Mb/s-to-Gb/s arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- A byte contains eight bits; advertised network speed does not guarantee the same application download rate.
- Round the output to a precision justified by the original measurement.
- Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
How do I convert Megabits per second to Gigabits per second?
result = input × 1000000 ÷ 1000000000 Using the displayed relationship, 1 Mb/s equals 0.001 Gb/s.
How many Gigabits per second are in one Megabits per second?
One Megabits per second is 0.001 Gigabits per second. The displayed digits may be rounded.
Can I reverse the Mb/s to Gb/s conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts Gb/s back to Mb/s.
Is the Megabits per second to Gigabits per second result exact?
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.