Mbps vs Gbps: What Is the Difference?
1 Gbps equals 1,000 Mbps. Mbps (megabits per second) is used for most home internet plans. Gbps (gigabits per second) describes very fast fiber or enterprise connections.
Internet speeds use two units you will see constantly: Mbps and Gbps. Understanding the difference helps you compare plans and avoid confusion when your ISP advertises speeds.
What Mbps Means
Mbps stands for megabits per second. One megabit is one million bits. This is the standard unit for home internet plans. When your ISP says "100 Mbps download," it means your connection can receive up to 100 million bits of data every second. Most plans sold today range from 25 Mbps to 500 Mbps.
What Gbps Means
Gbps stands for gigabits per second. One gigabit equals 1,000 megabits. Gbps connections are most common on fiber internet plans and business or enterprise networks. A 1 Gbps (gigabit) home plan is becoming more available as fiber infrastructure expands. Some providers now offer 2 Gbps or even 5 Gbps plans in select areas.
Mbps to Gbps Conversion
| Mbps | Gbps | Common Use |
|---|---|---|
| 25 Mbps | 0.025 Gbps | Basic broadband, FCC minimum |
| 100 Mbps | 0.1 Gbps | Standard family plan |
| 250 Mbps | 0.25 Gbps | Heavy household use |
| 500 Mbps | 0.5 Gbps | Power users, home offices |
| 1,000 Mbps | 1 Gbps | Gigabit fiber plan |
| 2,500 Mbps | 2.5 Gbps | Multi-gig fiber (emerging) |
Mbps vs MB/s: Not the Same Thing
This trips up almost everyone. Mbps uses a lowercase b for bits. MB/s uses an uppercase B for bytes. There are 8 bits in one byte. So a 100 Mbps connection downloads at roughly 12.5 MB/s (megabytes per second). When you see a file download speed in your browser showing 12 MB/s on a 100 Mbps plan, that is correct math.
Common Internet Plan Speeds
Do You Need a Gigabit Plan?
Probably not, unless you have many heavy users, run a home server, or regularly transfer very large files. For a household of four people streaming, gaming, and working from home, a 200-500 Mbps plan is usually plenty. Gigabit plans make sense if price is similar, since extra speed is free insurance for future needs.
Learn more in our download speed guide and what counts as a good internet speed for your needs.
Frequently Asked Questions
1 Gbps equals exactly 1,000 Mbps. To convert Gbps to Mbps, multiply by 1,000. To convert Mbps to Gbps, divide by 1,000.
Speed tests measure in megabits per second (Mbps). Your browser or download manager shows megabytes per second (MB/s). Divide your Mbps speed by 8 to get the MB/s equivalent. 100 Mbps equals about 12.5 MB/s.
For most households, gigabit internet provides more speed than needed. However, if the price is similar to a 500 Mbps plan, the extra headroom can be useful as more devices come online and streaming quality improves.
Sources
- IEEE 802.3 Ethernet Standard Definitions
- FCC Broadband Speed Benchmarks
- NIST Digital Metric Definitions