Calculate exact file download & transfer times across bandwidth speeds.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Enter your file or payload size (MB, GB, or TB).
Input your connection speed in Mbps, Gbps, or MB/s.
Get exact transfer hours, minutes, seconds and bitrate cross-conversions.
Networking speeds are measured in bits (b), while storage is measured in bytes (B). There are 8 bits in a byte, so 100 Mbps equals 12.5 MB/s maximum theoretical throughput.
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