Megabytes per Second to Megabits per Second (MB/s to Mbps)
1 megabyte per second = 8 megabits per second. Convert MB/s from SD card classes, drive specs and download meters into Mbps, with both charts.
Megabit per Second (Mbps) = Megabyte per Second (MB/s) × 8
Megabyte per Second (MB/s): A megabyte per second is 1,000,000 bytes or 8 megabits per second. A 100 Mbps connection downloads at most 12.5 MB/s.
Megabit per Second (Mbps): A megabit per second is 1,000,000 bits per second. Broadband and Wi-Fi speeds are advertised in Mbps; divide by 8 to get megabytes per second.
| Megabyte per Second (MB/s) | Megabit per Second (Mbps) |
|---|---|
| 1 | 8 |
| 5 | 40 |
| 10 | 80 |
| 25 | 200 |
| 50 | 400 |
| 100 | 800 |
Storage speeds are quoted in megabytes per second: SD card classes, SSD and hard-drive benchmarks, USB stick packaging and the transfer rate in a file-copy window. Video bitrates and network links are quoted in megabits per second, so matching a camera to a memory card, or a drive to a network, means multiplying MB/s by 8.
The SD Association's speed classes show why. A V30 card guarantees at least 30 megabytes per second of sustained writing, which is 240 megabits per second, comfortably above a camera recording 4K video at 100 Mbps. A card's headline read speed is usually much higher than its guaranteed minimum write speed, and only the class marking tells you what it can sustain while recording.
How to use this tool
- Type a value in the Megabyte per Second box to see it in megabits per second, or type in the Megabit per Second box to convert the other way.
- Press ⇄ to swap the two units, or Load example for a typical value.
- Check the charts below for common values; for other units, open the Data Transfer Rate converter.
Formula
Megabit per Second (Mbps) = Megabyte per Second (MB/s) × 8
Megabyte per Second (MB/s) = Megabit per Second (Mbps) × 0.125
Both factors come from exact definitions: 1 megabit per second = 0.125 megabytes per second and 1 megabyte per second = 8 megabits per second (shown to 12 significant digits).
Example
Two conversions worked with the same factors the converter uses:
30 MB/s × 8 = 240 Mbps
400 Mbps × 0.125 = 50 MB/s
Megabyte per Second to Megabit per Second chart
Common values from megabytes per second to megabits per second, rounded to four decimal places.
| Megabyte per Second (MB/s) | Megabit per Second (Mbps) |
|---|---|
| 0.25 | 2 |
| 2 | 16 |
| 4 | 32 |
| 6 | 48 |
| 10 | 80 |
| 15 | 120 |
| 20 | 160 |
| 30 | 240 |
| 40 | 320 |
| 45 | 360 |
| 60 | 480 |
| 80 | 640 |
| 90 | 720 |
| 110 | 880 |
| 150 | 1,200 |
| 160 | 1,280 |
| 200 | 1,600 |
| 250 | 2,000 |
| 300 | 2,400 |
| 450 | 3,600 |
| 550 | 4,400 |
| 600 | 4,800 |
| 1,000 | 8,000 |
| 3,500 | 28,000 |
| 7,000 | 56,000 |
Megabit per Second to Megabyte per Second chart
The reverse direction for values people often look up.
| Megabit per Second (Mbps) | Megabyte per Second (MB/s) |
|---|---|
| 3 | 0.375 |
| 8 | 1 |
| 16 | 2 |
| 35 | 4.375 |
| 60 | 7.5 |
| 90 | 11.25 |
| 140 | 17.5 |
| 250 | 31.25 |
| 350 | 43.75 |
| 700 | 87.5 |
| 1,500 | 187.5 |
| 4,000 | 500 |
Speeds rated in MB/s
| Rating | Megabyte per Second (MB/s) | Megabit per Second (Mbps) |
|---|---|---|
| SD Speed Class 2, minimum sequential write | 2 | 16 |
| SD Speed Class 10 or UHS Speed Class 1 (U1) | 10 | 80 |
| UHS Speed Class 3 (U3) or Video Speed Class V30 | 30 | 240 |
| Video Speed Class V60 | 60 | 480 |
| Video Speed Class V90 | 90 | 720 |
| SATA III drive link, usable maximum | 600 | 4,800 |
Quick mental estimate
Multiply by 8 by doubling three times: 30 → 60 → 120 → 240, so 30 MB/s is 240 megabits per second. The step is exact; no rounding is involved.
Use the converter or the charts when the exact figure matters.
The two units
Megabyte per Second (MB/s): A megabyte per second is 1,000,000 bytes or 8 megabits per second. A 100 Mbps connection downloads at most 12.5 MB/s.
Megabit per Second (Mbps): A megabit per second is 1,000,000 bits per second. Broadband and Wi-Fi speeds are advertised in Mbps; divide by 8 to get megabytes per second.
Frequently asked questions
How many Mbps is 1 MB/s?
Exactly 8 megabits per second, because every byte is 8 bits. In the same way, 12.5 megabytes per second equals 100 megabits per second.
What SD card do I need for 4K video?
Divide the camera's bitrate in Mbps by 8 and pick a card whose class minimum is above that: video at 100 Mbps needs about 12.5 MB/s, so a U3 or V30 card is the usual choice. Higher bitrates such as 400 Mbps need 50 MB/s or more, which points to V60 or V90.
How fast is SATA in megabits per second?
A SATA III link signals at 6 gigabits per second, but its encoding spends 10 bits on every byte, so the usable maximum is about 600 megabytes per second, or 4,800 megabits per second of data.
How precise is the result?
The converter uses the exact definitions above with browser floating-point arithmetic and shows up to 12 significant digits. The charts round to four decimal places for reading.
Sources
Last updated:
Page address with these inputs: https://kakao.mobile/tools/megabytes-per-second-to-megabits-per-second-converter/
Cite or embed this tool
kakaoCalc. (2026, November 8). Megabytes per Second to Megabits per Second (MB/s to Mbps). https://kakao.mobile/tools/megabytes-per-second-to-megabits-per-second-converter/
“Megabytes per Second to Megabits per Second (MB/s to Mbps).” kakaoCalc, 8 Nov. 2026, kakao.mobile/tools/megabytes-per-second-to-megabits-per-second-converter/.
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