free tool · 100% offline
Converter Suite
Twenty-three little converters in one drawer — text encodings, number bases, colors, timestamps, JSON, and checksums. Pick one on the left, type on the right, copy the result. No signup, no server round-trips: every conversion happens instantly in this tab, so it works on a plane.
Text & encoding
Text ↔ Binary
UTF-8 safe — text is encoded to bytes first, so emoji and accents survive.
Output
Result appears here as you type…Last converter and input are saved locally in this browser.
Everything stays local
There are no network calls here — you can load the page, go offline, and keep converting. Paste tokens, config snippets, or customer data without wondering where they end up.
Unicode-safe by default
Binary, hex, Base64, and byte converters go through proper UTF-8 encoding, so emoji, accents, and CJK text round-trip correctly instead of mangling into mojibake.
Checksums, not security hashes
CRC32 and FNV-1a are for spotting accidental corruption and fast lookups — they are deliberately not cryptographic. Never use them for passwords, signatures, or tamper detection.