Converter Tools
Convert data and content between popular formats in seconds - JSON, CSV, Base64, URL encoding, color codes, timestamps and more. Every converter runs entirely in your browser so your data stays private.
Modern workflows constantly move data between formats: an API returns JSON but a spreadsheet needs CSV; a designer works in hex colours but the stylesheet wants HSL; a timestamp from a database is a Unix epoch but the report needs a readable date. Writing a one-off conversion script or hunting for the right command-line flag wastes time when a browser tool can do it in seconds.
Our converter tools handle the most common format translations developers, designers, and data professionals encounter every day. Paste in the source data, get back the converted output, and copy it straight to wherever you need it. There is no installation, no API key, and no data sent to a server.
Every converter validates the input before converting it, providing a clear error message if the data is malformed rather than silently producing wrong output. This makes them safe to use as a quick sanity-check step in larger data pipelines.
Who uses Converter Tools?
Backend & API developers
Convert JSON payloads to CSV for spreadsheet review, encode or decode Base64 tokens, translate Unix timestamps to ISO dates, and URL-encode query strings without writing a utility function.
Frontend developers & designers
Translate hex colour codes to RGB or HSL for CSS variables, convert rem to px for design handoff, and quickly verify colour contrast ratios between two values.
Data analysts
Reformat exported JSON into tabular CSV for import into Excel or Google Sheets, convert epoch timestamps to human-readable dates, and clean up number formats between locales.
Security & DevOps engineers
Decode Base64-encoded credentials or certificates, URL-decode logged request strings, and verify JWT payloads without a dedicated client.
24 Converter Tools
Base64 Encoder
Encode text to Base64 instantly, with optional URL-safe output.
Base64 Decoder
Decode Base64 back to readable UTF-8 text, including URL-safe input.
URL Encoder
Percent-encode text for URLs, with component and full-URI modes.
URL Decoder
Decode percent-encoded URLs and query strings back to plain text.
HTML Encoder
Escape special characters into HTML entities to display code safely.
Markdown to HTML
Convert Markdown into clean, ready-to-use HTML code instantly.
CSV to TSV Converter
Re-delimit comma-separated data as clean tab-separated values for spreadsheets.
HTML Decoder
Decode HTML entities and convert escaped HTML back into plain readable characters.
TSV to CSV Converter
Convert tab-separated data into properly quoted, RFC 4180 comma-separated values.
Hex Converter
Convert text to hexadecimal and hex back to text, UTF-8 safe.
HTML to Markdown
Convert HTML source into clean, readable Markdown instantly.
JSON to XML
Convert JSON into well-formed, indented XML with custom element names.
Base32 Encoder
Encode text to RFC 4648 Base32, with optional lowercase and padding.
Base32 Decoder
Decode RFC 4648 Base32 back to readable UTF-8 text, case-insensitive.
Text to ASCII
Convert text to ASCII / Unicode codes in decimal, hex or binary.
ASCII to Text
Convert ASCII / Unicode codes in decimal, hex or binary back to text.
Binary Converter
Convert text to binary and binary back to text, UTF-8 safe.
JSON to YAML Converter
Convert JSON into clean, readable YAML instantly in your browser.
Roman Numeral Converter
Convert numbers to Roman numerals and Roman numerals back to numbers.
YAML to JSON Converter
Convert YAML config into valid JSON, pretty-printed or minified.
Color Converter
Convert colors between HEX, RGB and HSL formats instantly.
Unix Timestamp Converter
Convert Unix timestamps to dates and dates back to timestamps.
Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal.
CSV to Markdown Table Converter
Turn CSV data into a clean GitHub-flavored Markdown table.
How to choose the right converter tool
Identify the source and target format first. For structured data moving between JSON and CSV, use the JSON ↔ CSV Converter - it handles nested objects and arrays intelligently. For encoding tasks (Base64, URL encoding, HTML entities), pick the converter that matches the encoding standard your system expects. For colour work, the Colour Converter supports hex, RGB, HSL, and named CSS colours in both directions. For time data, the Timestamp Converter accepts Unix epoch (seconds or milliseconds) and outputs ISO 8601, RFC 2822, or a formatted local string. When in doubt, paste your data into the most likely tool - the validator will tell you immediately if the format does not match.