Convert bytes across decimal SI and binary IEC units side by side, see transfer time at your Mbps link speed, and settle the GB vs GiB question.
Every conversion is plain arithmetic running in your browser. Nothing is uploaded or stored.
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Every value is converted to a byte count first, then multiplied out into each ladder. Decimal (SI) steps multiply by 1000 — kB, MB, GB, TB, PB — while binary (IEC) steps multiply by 1024 — KiB, MiB, GiB, TiB. The bit sits at the bottom of the decimal ladder at one eighth of a byte, and results use up to six significant figures so tiny and huge values stay readable.
Nothing was stolen — Windows divides by 1024-based units while the vendor label is 1000-based. 500 GB is 500,000,000,000 bytes, and 500e9 ÷ 2⁴⁰ = 465.66 GiB, which Windows still prints as 'GB'. Linux and macOS display the decimal figure, so the same drive looks the size it says on the box there.
Because the link speed is in megabits and your file size is in megabytes, and 8 bits make one byte: 100 Mbps ÷ 8 = 12.5 MB/s in the best case. Subtract protocol overhead and a shared medium and 11–12 MB/s is a healthy 100 Mbps line. The transfer row on this page does exactly that division for you.
In decimal units: a carrier gigabyte is 1,000,000,000 bytes, matching how networks meter traffic, while your phone's storage readout may still use binary units. So a 5 GB plan is 5 billion bytes of streaming, not 5 × 1024³, and apps that report 'MB used' in binary can disagree with the carrier's counter by about 7 %.
No — a byte is eight bits, and the capital-B convention is load-bearing: Mbps means megabits per second, MB/s means megabytes per second, and a 100 Mb file is 12.5 MB. The ladder on this page starts both lists from the bit so you can see the ÷ 8 step explicitly.
No. Every conversion here is arithmetic on one number — powers of 1000 and 1024 — done by a few lines of vanilla JavaScript in your browser. There is no upload, no account and no network request involved.
If you just finished with Data Size Converter, the natural next steps are JSON Formatter & Validator, JSON to YAML Converter, JSON Diff, or browse every tool in Daily Tools.