Generator
Generate modern unique identifiers: ULID, NanoID, Snowflake and CUID2. Compare formats, decode ULID timestamps and pick the right ID for your system.
uid-generatorSecurity
Generate RFC 6238 TOTP (time-based, 6/8 digits, 30/60s step) and RFC 4226 HOTP (counter-based) one-time passwords from a base32 shared secret, fully offline with HMAC-SHA1/256/512, plus an otpauth:// URI for importing into Google Authenticator / Authy
totp-hotp-offline-generatorFormat Conversion
Format and beautify TOML. Note: comments are lost and key order may change (@iarna/toml limitation)
toml-formatterFormat Conversion
Convert text to and from binary bit strings using ASCII (7-bit) or UTF-8 (8-bit) encoding
text-to-binaryFormat Conversion
Convert text to/from Unicode escape sequences (\uXXXX / \u{XXXXXX}) and apply Unicode normalization (NFC/NFD/NFKC/NFKD)
unicode-escape-converterMath & Numbers
Convert therms to kilowatt-hours with configurable decimal precision
therm-to-kwhMath & Numbers
Convert tebibytes to terabytes with decimal vs binary interpretation, alternate-system comparison, and network-speed-aware transfer estimates
tib-to-tbText Processing
Convert Traditional Chinese text to Simplified Chinese with OpenCC phrase conversion
traditional-to-simplified-chinese-converterMath & Numbers
Convert US short tons to pounds with configurable decimal precision
ton-to-lbMath & Numbers
Analyze two categorical factors and their interaction with a two-way ANOVA table
two-way-anova-calculatorMath & Numbers
Compare two independent proportions with a pooled two-proportion Z test and confidence interval
two-proportion-z-test-calculatorMath & Numbers
Run an independent two-sample t test with pooled variance from raw data or summary statistics
two-sample-t-test-calculator