Network Speed Calculator

Summary

Convert between Mbps, MBps, Gbps, GBps, Kbps, and KBps, and estimate file transfer time for any file size.

How it works

1. Enter a network speed value and select its unit (e.g. 100 Mbps).
2. Optionally enter a file size and its unit (e.g. 2 GB) to estimate transfer time.
3. The calculator converts the speed into all other units simultaneously.
4. Transfer time is displayed in a human-readable format (hours, minutes, seconds).
5. All calculations run entirely in your browser — no data is sent anywhere.

Use cases

• Convert your ISP plan speed from Mbps to MBps to understand real download rates.
• Estimate how long a large backup or video upload will take on your connection.
• Check if a server's network interface will bottleneck your data pipeline.
• Compare cloud egress costs by converting Gbps to GBps for billing calculations.
• Verify storage device read/write speeds against your network throughput.
• Plan data migration windows by calculating transfer time for terabyte datasets.

Frequently Asked Questions