Mbps Converter — Speed to MB/s & Download Time Calculator
Enter your internet speed in Mbps and a file size to instantly see the download or upload time plus conversions to MB/s, KB/s and Gbps.
Mbps
File size unit
At 100 Mbps, time to transfer 1.000 MB — also shown as 1m 20s
Convert Mbps to MB/s (8 bits = 1 byte)
Express file size in MB
Divide file size by speed
- 1
Speed in MB/s
100 ÷ 8 = 12,58 bits = 1 byte - 2
File size in MB
1 GB × 1,000 = 1.000 - 3
Download time
1.000 MB ÷ 12,5 MB/s = 80
Hvordan fungerer denne lommeregner?
Divide Mbps by 8 to get MB/s. Then: download time (seconds) = file size (MB) ÷ speed (MB/s). A 100 Mbps connection delivers 12.5 MB/s, so a 1 GB file (1000 MB) takes about 80 seconds. Real-world speed is typically 70–90% of the rated figure.
Formel
How this is calculated
Network speeds are measured in megabits per second (Mbps), but file sizes are measured in megabytes (MB). Because one byte contains eight bits, you divide the Mbps speed by 8 to get the equivalent in megabytes per second: a 100 Mbps connection delivers a maximum of 12.5 MB/s. The download time then follows from dividing the file size in MB by the speed in MB/s.
This calculator uses decimal (SI) prefixes throughout, the same convention as ISPs: 1 GB = 1,000 MB = 1,000,000 KB. Real-world throughput is typically lower than the theoretical maximum because of protocol overhead, network congestion, server speed, and Wi-Fi contention. As a practical rule of thumb, expect 70–90% of the rated speed on a wired connection and 40–70% on Wi-Fi.
For context: streaming 4K video requires roughly 15–25 Mbps; a 1-hour 4K Netflix download is around 3 GB (at 2160p). A 50 GB game at 100 Mbps takes just over 1 hour.
Ofte stillede spørgsmål
Because 1 byte = 8 bits. Your download manager measures in megabytes per second (MB/s), while your ISP advertises in megabits per second (Mbps). 100 Mbps ÷ 8 = 12.5 MB/s — both numbers describe the same speed.
The calculator shows the theoretical maximum at your stated speed. Real downloads are slower due to protocol overhead (TCP, headers, encryption), server upload limits, network congestion, and interference on Wi-Fi. Wired connections typically reach 70–90% of rated speed; Wi-Fi 40–70%.
Capital B (byte) vs lowercase b (bit). A megabyte (MB) = 8 megabits (Mb). ISPs quote speeds in Mbps (megabits); file managers report sizes and speeds in MB (megabytes). Always divide by 8 to convert network speed to file-transfer rate.
Også kendt som
TG we-Calculate Editorial Team. (2026). Mbps Converter — Speed to MB/s & Download Time Calculator [Online calculator]. TG we-Calculate. https://we-calculate.com/da/calculator/mbps-converter
TG we-Calculate Editorial Team. "Mbps Converter — Speed to MB/s & Download Time Calculator." TG we-Calculate. 2026. https://we-calculate.com/da/calculator/mbps-converter.
TG we-Calculate Editorial Team, "Mbps Converter — Speed to MB/s & Download Time Calculator," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/da/calculator/mbps-converter
@misc{wecalculate_mbps_converter, title = {Mbps Converter — Speed to MB/s & Download Time Calculator}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/da/calculator/mbps-converter}}, year = {2026}, note = {TG we-Calculate} }
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