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Data Transfer Calculator

Calculate how long it takes to transfer files based on file size and transfer speed. Perfect for estimating download/upload times.

File Size

Transfer Speed

Common Transfer Scenarios

Wi-Fi (50 Mbps) 100 MB file: ~16 seconds
Ethernet (1 Gbps) 1 GB file: ~8 seconds
4G Mobile (20 Mbps) 500 MB file: ~3.3 minutes
5G (500 Mbps) 2 GB file: ~32 seconds
USB 3.0 (5 Gbps) 10 GB file: ~16 seconds
Cloud Storage Upload speed dependent

How Data Transfer Calculator Works

Simple Formula

Time = File Size / Transfer Speed. We convert all units to bits for accurate calculations.

Unit Conversion

Automatic conversion between bytes, KB, MB, GB, TB and bps, Kbps, Mbps, Gbps.

Time Formats

Results shown in seconds, minutes, hours, and days for easy understanding.

Real-time Updates

See results instantly as you adjust file size or transfer speed.

Common Presets

Quickly select common file sizes and connection speeds for estimation.

No Data Storage

All calculations happen locally in your browser for maximum privacy.