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Calculators
2Converters
6Currency ConverterLive ECB rates, 1-year history, and a multi-currency view.Unit Converter14 categories, every unit at once, with the formula shown.Time & Time ZonesWorld clocks, a meeting planner, and zone conversion.Timestamp ConverterEpoch ↔ ISO in any zone, batch conversion, and durations.Data Format ConverterConvert between JSON, YAML, CSV, XML and TOML, with every loss named first.Image ConverterConvert between PNG, JPEG and WebP with resize, quality, and a plain account of what each re-encode costs.
Documents
3Encoding & Data
7JSON EditorTree editor, schema validation, paths, diff & format.Base64 Encode / DecodeText & files ↔ Base64, URL-safe, data URLs.URL Encode / DecodePercent-encoding plus a URL & query-string inspector.JWT DecoderDecode tokens, inspect claims, verify signatures locally.Hash GeneratorSHA-1/256/384/512, MD5, CRC32 & HMAC for text or files.QR Code GeneratorGenerate QR codes — and read them back from an image.UUID GeneratorUUID v1–v7, ULID, NanoID and Snowflake — bulk and inspected.
Developer Tools
8Regex TesterLive matches, a token-by-token explanation, and portability notes.Cron ParserBuild schedules visually, explain them, preview next runs.Color ConverterNamed colours, harmonies, contrast, and vision simulation.Password GeneratorStrong passwords and passphrases, with an honest strength estimate.Text ToolkitCase conversion, line operations, escaping, live counts and placeholder text.SQL FormatterPretty-print or minify SQL across 20 dialects, live as you type..env FormatterFormat, validate and convert .env files, and generate a .env.example.HTTP ReferenceStatus codes, headers, MIME types, and methods — searchable offline.