Convert between binary, octal, decimal and hex exactly, at any size.
Anslation CoreRuns in your browser — nothing to install
anslation.one/apps/anslation-base-converter
Anslation Base Converter
Anslation Base Converter on Web app — installable PWA — no store needed
Anslation Base Converter
Anslation Base Converter on Workspace — inside Anslation One
Anslation Base Converter converts whole numbers between binary, octal, decimal and hexadecimal as you type in any of them, plus one more base of your choice from 2 to 36. It uses exact big-integer maths, so a 128-bit value or a 300-digit number converts without rounding. It accepts 0x, 0o and 0b prefixes, spaces, underscores and a minus sign, and points out the first digit that does not belong. It can group digits (nibbles, thousands) and use uppercase hex, and shows the bit length, the smallest integer type that holds the number and, for negatives, the two’s-complement pattern. Your last number and options stay in your browser.
Web App · For everyone · Developer Tools
Version 1.0.0
Oct 21, 2026
Base Converter launched: binary, octal, decimal, hex and any base to 36 with exact BigInt maths, digit grouping, bit length and two’s complement.
Base Converter launched: binary, octal, decimal, hex and any base to 36 with exact BigInt maths, digit grouping, bit length and two’s complement.
Oct 21, 2026
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Runs in your browser. What you enter stays on this device and is not used for tracking.
The creator declares no third-party tracking.
No data linked to your identity is declared.
This data may be collected but is not linked to your identity:
Privacy practices may vary, for example based on the features you use. Label checked Oct 21, 2026. Runs entirely in the browser; nothing you enter is uploaded.
Keep your last number and options in this browser so it is there next time.
Web app
installable PWA — no store needed
Workspace
inside Anslation One
Plan: Free
1 permission requested. The install review lists them before anything is installed.
90
/ 100
Eligible
Sample listing: these checks run on seed data. No certification review has taken place.
Quality score
Passed
Security review
Needs evidence
Privacy label
Passed
Support route
Passed
Release ready
Passed
No runtime check has reported for this app yet.
Signals the listing carries; the passport has the evidence behind each one.
The sandbox opens Anslation Base Converter with sample records. Nothing you do there reaches your workspace.
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