How to Convert Megabits per second to Gigabits per second (Mbps to Gbps)
Broadband plans in Singapore are sold in Mbps and Gbps, while download managers show MB/s, so converting between them shows how fast files really arrive. This guide shows how to convert megabits per second into gigabits per second by hand, with examples and a quick-reference table.
The conversion
To convert megabits per second to gigabits per second, multiply the value by 0.001. To go the other way, divide by the same number (or multiply by 1,000). For a quick estimate, multiply by about 0.001.
Gigabits per second = megabits per second × 0.001
Worked examples
- 3 Mbps = 0.003 Gbps
- 12.5 Mbps = 0.0125 Gbps
- 75 Mbps = 0.075 Gbps
Megabits per second to Gigabits per second table
| Megabits per second | Gigabits per second |
|---|---|
| 1 Mbps | 0.001 Gbps |
| 2 Mbps | 0.002 Gbps |
| 5 Mbps | 0.005 Gbps |
| 10 Mbps | 0.01 Gbps |
| 20 Mbps | 0.02 Gbps |
| 25 Mbps | 0.025 Gbps |
| 50 Mbps | 0.05 Gbps |
| 100 Mbps | 0.1 Gbps |
| 250 Mbps | 0.25 Gbps |
| 500 Mbps | 0.5 Gbps |
| 1,000 Mbps | 1 Gbps |
Common questions
Is Mbps to Gbps exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Gigabits per second to Megabits per second converter.
Mistakes to avoid
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Background
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
For any value, use the Megabits per second to Gigabits per second Converter or browse all data transfer rate converters.
Run your own numbers: Megabits per second to Gigabits per second Converter