4 Number BasesLarge NumbersInstant Conversion
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FAQ

What number systems are supported?
Hexadecimal (base 16), Decimal (base 10), Binary (base 2), and Octal (base 8).
Can I convert large numbers?
Yes. The tool uses BigInt for arbitrary precision, supporting numbers of any size.
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About Hex/Dec/Bin

Hex/Dec/Bin solves a specific problem that comes up daily for anyone dealing with this task: doing it once, fast, without an account. Processing runs locally in your browser using modern Web APIs. Nothing is uploaded, nothing is logged, and there is no quota to worry about for casual use. It pairs naturally with the other utility utilities here when you need to chain a quick workflow.

When you'd reach for Hex/Dec/Bin

  • You need to handle a one-off task right before a meeting and don't have time to install anything.

    Anyone working remotely on a borrowed or restricted machine.

    Open the page, get the result, paste it into your doc — under a minute.

  • You're on a public or shared machine and don't want to leave traces of what you're working on.

    Travelers, contractors, anyone working from a friend's computer.

    Nothing is uploaded, nothing persists if you're not signed in.

  • You're hitting the daily limit of a paid SaaS and need a backup option for a single quick job.

    Marketers and ops people whose primary tool is metered.

    Stay productive without burning credits.

  • You're cleaning up a folder of files that accumulated over a project and need to standardize them.

    Designers, writers, and developers wrapping up deliverables.

    Drop each file in, copy the output, move on.

Frequently asked about Hex/Dec/Bin

What browsers does Hex/Dec/Bin support?
Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.
Will Hex/Dec/Bin change my original file?
Never. Hex/Dec/Bin only reads your input file and produces a new output file.
Is Hex/Dec/Bin really free?
Yes — Hex/Dec/Bin is free for unlimited personal use, with no account required and no watermark on the output.
Do I need to create an account to use Hex/Dec/Bin?
No. Hex/Dec/Bin works without any signup. We only ask for an email if you decide to subscribe to a paid plan.
Can I use Hex/Dec/Bin commercially?
Yes. The output of Hex/Dec/Bin belongs entirely to you, with no licensing restrictions.