Bandwidth is maximum capacity (pipe width). Speed is actual transfer rate (water flow).

Mbps = megabits (network speed). MBps = megabytes (file size). 1 MBps = 8 Mbps.

How to calculate transfer time?

Time = File Size / Speed. A 1 GB file on 100 Mbps takes about 80 seconds.

How long does it take to download a 1GB file at 100 Mbps?

At 100 Mbps, a 1 GB file takes about 80 seconds. Note that 100 Mbps = 12.5 MB/s (divide by 8 to convert bits to bytes). Real-world overhead typically adds 5-10% more time.

What is the difference between bandwidth and throughput?

Bandwidth is the maximum theoretical capacity of a connection. Throughput is the actual data rate achieved in practice, which is always lower due to protocol overhead, latency, and congestion.

Bandwidth Calculator

Calculate download/upload time or data transfer capacity

File Size

Connection Speed

Estimated Transfer Time

0.08 seconds

0.08

Seconds

0.00

Minutes

0.00

Hours

Speed Presets

How It Works

The bandwidth calculator helps you estimate file transfer times based on your connection speed, or calculate how much data you can transfer in a given time period.

Important notes:

Network speeds are measured in bits per second (bps), while file sizes are measured in bytes. 1 byte = 8 bits.
Actual transfer speeds may be lower due to network overhead, latency, and congestion.
Advertised speeds are often "up to" speeds, real-world performance varies.

Bandwidth Calculator

Speed Presets

How It Works

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