Data Transfer Unit Converter

How to convert: step by step

1. 1
   Enter your transfer speed
   Type the numeric value of your connection speed into the input field.
2. 2
   Select the unit
   Choose the unit that matches your speed: bps, Kbps, Mbps, Gbps, Tbps, or their byte-per-second equivalents.
3. 3
   Read the conversion table
   All equivalent values across every unit are updated instantly. The active unit is highlighted in violet.
4. 4
   Enter a file size
   In the Transfer Time Calculator section, enter the file size in KB, MB, GB, or TB.
5. 5
   Get the transfer time
   The estimated transfer time is displayed in seconds, minutes, hours, or days depending on the magnitude.

Frequently Asked Questions

What is the difference between Mbps and MB/s?

Mbps stands for megabits per second; MB/s stands for megabytes per second. There are 8 bits in a byte, so 100 Mbps equals 12.5 MB/s. Internet speeds are typically advertised in Mbps, while file copy speeds are shown in MB/s.

Why does my 100 Mbps connection seem slower than expected?

Advertised speeds are theoretical maximums. Protocol overhead, TCP/IP headers, network congestion, wireless interference, and server-side limitations all reduce real-world throughput. A 100 Mbps link typically delivers 80–90 Mbps under ideal conditions.

How is transfer time calculated?

Transfer time = (file size in bits) / (speed in bits per second). The tool converts your file size to bits, divides by the bps equivalent of your chosen speed, and formats the result into human-readable units.

Does the calculator use base-10 or base-2 for file sizes?

File sizes use binary (base-2) prefixes: 1 KB = 1,024 bytes, 1 MB = 1,048,576 bytes. Network speeds use decimal (base-10): 1 Kbps = 1,000 bits/s. This matches real-world conventions.

What does Tbps mean?

Tbps stands for terabits per second: 1,000,000,000,000 bits per second. This is the territory of backbone internet links and data center interconnects, not home broadband.

Can I use this to plan a backup or cloud upload?

Yes. Enter your upstream bandwidth and the size of the data you want to back up. The tool will tell you how many seconds, minutes, hours, or days the transfer will take.

Is there a limit to the numbers I can enter?

The input accepts any positive number including decimals. Values are formatted using scientific notation when they are very large or very small.

How do I convert GB/s to Gbps?

Multiply GB/s by 8 to get Gbps. For example, 1 GB/s = 8 Gbps. The conversion table on this page shows all equivalent values simultaneously so you can read the answer directly.