Does this tool support negative numbers?

This converter focuses on unsigned integers. For signed formats, convert the absolute value and apply your representation rules.

Is conversion done on a server?

No. Everything runs locally in your browser.

Runs in browser

Convert numbers between binary, octal, decimal, and hex instantly.

Convert numbers between binary, octal, decimal, and hexadecimal instantly in your browser. Free base converter online.

Binary display width

Binary (base 2)

Octal (base 8)

Decimal (base 10)

Hexadecimal (base 16)

Padded binary (32-bit, unsigned): 00000000000000000000000000101010

ASCII (32–127): "*"

🔒 Runs in your browser · No uploads · Your data never leaves your device

Enter a value
Type a number into any base field (binary, octal, decimal, or hex).
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All other fields update instantly as you type.
Fix invalid input
If the input contains invalid digits for that base, the field will show an error.

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Does this tool support negative numbers?: This converter focuses on unsigned integers. For signed formats, convert the absolute value and apply your representation rules.
Is conversion done on a server?: No. Everything runs locally in your browser.

Binary (base 2): A number system using only 0 and 1 — the fundamental representation of data in computers.
Hexadecimal (base 16): A number system using digits 0–9 and A–F, commonly used in programming to compactly represent binary values.

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