Convert

Convert Unix epoch timestamps to ISO 8601, UTC, and local time with live ticking clock.

Decode binary Protobuf wire data to JSON, .proto schema, and .pbtxt with byte wire inspector.

Convert cURL commands to Fetch, Axios, Python HTTPX, Go, and Rust API clients.

Convert JSON trees to clean, indented YAML for Kubernetes, Compose, and configs.

Parse YAML configs, manifests, or snippets to clean formatted JSON.

Deterministic CSV parser with custom delimiters, header toggles, and auto-typing.

Export array of JSON objects to RFC-4180 CSV with custom delimiters.

URL encode deep objects with bracket, dot, or JSON nesting notations.

Parse URL query parameters, full URLs, and bracket structures to JSON.

Render JSON as a Python dict/list literal. null → None, true → True, false → False.

Convert Python dict/list literals to JSON. Handles None, True, False, and single quotes.

Extract JSON payloads from cURL and generate JS Fetch, Python, and Go code.

Deconstruct URLs and edit query parameters interactively with 2-way real-time synchronization.

Convert HEX, RGB, HSL color models and check WCAG AA/AAA contrast ratios.

Convert integers between binary, octal, decimal, hex, or any custom base 2-36. BigInt-backed for arbitrary precision.

Convert text between camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case, Sentence case, and dot.case.

Convert Length, Weight, Temperature, Area, Volume, Speed, Data Storage, Time, Pressure, Energy, Power, Angle, Frequency, and Data Transfer with live all-units matrix.

Convert a date/time across IANA timezones and compare 3-4 zones side by side.

Exact calendar age in years, months, and days, plus total days, weeks, and next-birthday countdown.

Generate a minimal OpenAPI 3.0 YAML skeleton from a .har file, grouped by path and method.

Convert a .har file into a readable Markdown summary for PR descriptions and bug reports.

Flatten nested JSON into dot/bracket keys, or unflatten back. Configurable delimiter and array notation.

Convert XML to JSON and back. Attributes under @attributes, text under #text, repeats become arrays.

Convert a JSON array to a Markdown table, or any JSON to a nested bullet list.

Convert tab-separated values to JSON and back. Same engine as CSV to JSON, delimiter fixed to tab.

Convert JSON to TOML and back: scalars, arrays, [table] headers. Hand-written, no dependency.

Escape or unescape HTML entities using named (&), decimal (&), or hex (&) formats with optional attribute-quote encoding.

Convert UTF-8 text to 8-bit binary, hexadecimal, octal, or decimal byte values and decode byte streams back to text.

Translate text, serial numbers, and digits to the ICAO / NATO phonetic alphabet (Alfa, Bravo, Charlie) and decode back.

Convert integers 1..3999 to Roman numerals and back with strict canonical validation and step-by-step breakdown.

Convert integers and decimals to English cardinal, ordinal (twenty-third), and currency/cheque words up to decillions.

Parse PHP serialize() strings to JSON with UTF-8 byte-length accuracy and exact byte error offsets, or serialize JSON to PHP.

Convert JSON to well-formed XML with configurable root and item tags, @attribute prefix, #text key, and CDATA.

Convert CSV or TSV into GitHub Flavored Markdown tables with per-column alignment, pipe escaping, and padding.

Convert CommonMark and GFM tables, task lists, and code fences to HTML with live sanitized preview.

Convert HTML headings, lists, tables, code blocks, and links into clean GitHub Flavored Markdown.

Format and convert timestamps to ISO 8601 UTC, timezone offsets, week dates, ordinal dates, and durations.

Arbitrary-precision BigInt decimal math avoiding IEEE 754 float drift with exact rounding modes.

Format numeric values across world locales and ISO 4217 currencies side-by-side via Intl.NumberFormat.

Calculate Body Mass Index (BMI) in Metric or Imperial with WHO classifications, target healthy weight ranges, and visual color gauge.

Remote worker cross-timezone coordinator. Convert job local time across APAC, EMEA, and AMER with 24h overlap matrix and meeting invite summaries.

Interactive binary bitboard, circular bit shifts (ROL/ROR), arithmetic shifts, 2s complement, and Hamming weight popcount.