Free Online Converters & Dev Tools
Simple, fast, and free tools for converting text formats. No registration required.
Why Choose tconv.com?
100% Free — Forever
Use all our tools with no limits and no hidden fees. We may show a few non-intrusive ads in the future to keep the service free, but your experience will always come first.
Secure & Private
All conversions happen right in your browser. Your data never leaves your device and always stays private.
Unlimited Tools & Conversions
From text and numbers to code, files, and more — dozens of converters and utilities for every need, all in one place.
Instant Results
Pick, convert, copy! Everything happens instantly and effortlessly.
Base64 to Text
Decode Base64 to plain text effortlessly. Free online tool for instant Base64 decoding, supporting various character sets. Paste your Base64 string and get readable text.
Text to Base64
Encode plain text to Base64 format quickly and securely. Free online Base64 encoder for developers and data processing. Supports UTF-8 and other encodings.
Image to Base64
Convert images (PNG, JPG, GIF, SVG, WEBP) to Base64 strings online for free. Embed images directly in HTML/CSS or transmit them easily. Secure client-side conversion.
Base64 to Image
Decode Base64 strings back into viewable images (PNG, JPG, GIF, SVG, WEBP). Free online tool to convert Base64 to image and download the result. Paste Base64 and see your image.
JWT Decoder
Decode and verify JSON Web Tokens (JWT) online. View token payload, headers, and signature. Free tool for developers to debug and validate JWTs.
Regex Tester
Test and validate regular expressions with real-time matching, highlighting, and detailed match information. Free online regex testing tool for developers.
Timestamp to Date
Convert UNIX timestamps to human-readable dates instantly. Free online tool for developers to convert epoch time to readable date format. Supports multiple timezones.
Date to Timestamp
Convert human-readable dates to UNIX timestamps instantly. Free online tool for developers to convert dates to epoch time. Supports multiple date formats.
UNIX Timestamp Converter
Convert between UNIX timestamps and human-readable dates. Bidirectional converter for epoch time. Free online tool.
Timezone Converter
Convert date and time between timezones. UTC, PST, EST, and more. Free online timezone converter.
Duration Calculator
Convert seconds to human-readable duration (1h 30m) and vice versa. Free online duration calculator.
Milliseconds to Seconds
Convert between millisecond and second timestamps. JavaScript vs Unix epoch. Free online converter.
Date Difference Calculator
Calculate days, hours, minutes between two dates. Free online date difference calculator.
ISO 8601 Parser
Parse ISO 8601 date strings. View in UTC, local, Unix timestamp, RFC 2822. Free online parser.
12-hour to 24-hour
Convert between 12-hour (AM/PM) and 24-hour time format. Free online time format converter.
Cron Expression Parser
Parse cron expressions to human-readable schedule. Free online cron parser for developers.
Base64 to ASCII
Decode Base64 to ASCII text. Non-ASCII characters replaced with ?. Free online tool.
Base64 to Hex
Convert Base64 strings to hexadecimal format. Free online Base64 to hex decoder.
Base64 to Audio
Decode Base64 to audio. Play and download MP3, WAV, OGG. Client-side conversion.
Base64 to Video
Decode Base64 to video. Play and download MP4, WebM. Client-side conversion.
Base64 to PDF
Decode Base64 to PDF. View and download. Client-side conversion.
Base64 to File
Decode Base64 to any file type. Download decoded files. Client-side.
Hex to Base64
Convert hexadecimal strings to Base64 format. Free online hex to Base64 encoder.
Audio to Base64
Convert audio files (MP3, WAV, OGG) to Base64 strings. Client-side, private.
Video to Base64
Convert video files (MP4, WebM) to Base64 strings. Client-side, private.
PDF to Base64
Convert PDF files to Base64 strings. Client-side, private.
File to Base64
Convert any file to Base64. All file types supported. Client-side.
URL to Base64
Fetch URL content and encode to Base64. Works with CORS-enabled URLs.
JSON Formatter
Beautify, minify, and validate JSON. Pretty-print or compress. Free online JSON formatter.
XML Formatter
Beautify, minify, and validate XML. Format config files, SOAP, RSS. Free online XML formatter.
HTML Formatter
Beautify and minify HTML. Format messy HTML for readability or compress for production.
CSS Formatter
Beautify and minify CSS. Format stylesheets for readability or compress for production.
URL Encoder/Decoder
Encode and decode URL strings. Percent-encoding for special characters. Free online URL encoder decoder.
HTML Entity Encoder/Decoder
Encode and decode HTML entities like & < >. Free online HTML entity converter.
Unicode to Text
Convert Unicode escape sequences to text and vice versa. Support for emoji and special characters.
Slug Generator
Generate SEO-friendly URL slugs from text. Convert titles to URL-safe strings.
Lorem Ipsum Generator
Generate placeholder text. Lorem ipsum for designers and developers.
Word/Character Counter
Count words, characters, sentences, and paragraphs. Free online word counter.
Case Converter
Convert text case: UPPERCASE, lowercase, Title Case, camelCase, snake_case.
String Escape/Unescape
Escape and unescape strings for JSON, SQL, HTML, and regex. Free online string escape tool.
MD5 Hash Generator
Generate MD5 hash from text. Free online MD5 hash generator. Client-side.
SHA-256/SHA-1 Hash
Generate SHA-256 and SHA-1 hashes from text. Free online hash generator.
UUID/GUID Generator
Generate UUID v4 and GUID. Free online UUID generator for developers.
Password Generator
Generate secure random passwords. Customizable length and character sets.
Bcrypt Hash Generator
Generate bcrypt hashes and verify passwords. Free online bcrypt tool.
Binary/Decimal/Hex/Octal
Convert between binary, decimal, hexadecimal, and octal. Free online number base converter.
Bytes Converter
Convert between bytes, KB, MB, GB, TB. Free online bytes converter.
Percentage Calculator
Calculate percentages. What is X% of Y? Free online percentage calculator.
Roman Numerals Converter
Convert between Roman numerals and numbers. Free online Roman numerals converter.
HEX/RGB/HSL Converter
Convert between HEX, RGB, and HSL color formats. Free online color converter.
Color Picker
Pick colors and get HEX, RGB, HSL values. Free online color picker.
Color Palette Generator
Generate color palettes from a base color. Free online palette generator.
SQL Formatter
Beautify and minify SQL. Format SQL queries for readability.
JavaScript Formatter
Beautify and minify JavaScript/TypeScript. Format code for readability.
YAML Formatter
Beautify and validate YAML. Format YAML config files.
Markdown Preview
Preview Markdown as HTML. Live Markdown to HTML converter.
TOML Formatter
Beautify and validate TOML. Format TOML config files.
JSON to YAML
Convert JSON to YAML. Free online JSON to YAML converter.
YAML to JSON
Convert YAML to JSON. Free online YAML to JSON converter.
JSON to CSV
Convert JSON to CSV. Free online JSON to CSV converter.
CSV to JSON
Convert CSV to JSON. Free online CSV to JSON converter.
JSON to TypeScript
Generate TypeScript interfaces from JSON. Free online tool.
JSON Schema Generator
Generate JSON Schema from JSON. Free online JSON Schema generator.
Image Compressor
Compress images and reduce file size. Free online image compressor.
Image Resizer
Resize images. Change dimensions. Free online image resizer.
Image Format Converter
Convert between PNG, JPG, WebP. Free online image format converter.
QR Code Generator
Generate QR codes from text or URL. Free online QR code generator.
Favicon Generator
Generate favicons from images. Create 16x16, 32x32 favicons.
User Agent Parser
Parse and decode User-Agent strings. Free online User-Agent parser.
HTTP Status Codes
HTTP status code reference. Look up status codes and meanings.
Diff Checker
Compare two texts and see differences. Free online diff checker.
IP Address Info
Look up IP address information. Geolocation, ISP, and more.
DNS Lookup
Look up DNS records (A, AAAA, MX, TXT, CNAME) for any domain. Uses Google DNS.
WHOIS Lookup
Look up domain registration info via RDAP. Registrar, creation date, expiry.
SSL Certificate Checker
Check SSL certificates for any domain. Validity, issuer, expiry dates.
Public IP Checker
Show your public IP address. Quick check without leaving the page.
Currency Converter
Convert between currencies with live exchange rates. Free API.
Crypto Price Checker
Check Bitcoin, Ethereum, and other cryptocurrency prices. Real-time data.
NPM Package Info
Look up NPM package details, versions, and dependencies.
GitHub Repo/User Info
Look up GitHub repository or user information.
CDN Link Generator
Get CDN links for popular libraries (jQuery, Bootstrap, etc.).
Country Info
Look up country information: capital, currency, languages, flag.
Public Holidays
Get public holidays for any country and year.
Weather
Check weather for any city. Free, no API key required.
Email Validator
Validate email format and check MX records.
URL Shortener Expander
Expand shortened URLs to see the final destination.
XML to JSON
Convert XML to JSON. Free online XML to JSON converter. Transform XML data to JSON format.
JSON to XML
Convert JSON to XML. Free online JSON to XML converter. Transform JSON data to XML format.
HTML to Markdown
Convert HTML to Markdown. Free online HTML to Markdown converter for blogs and documentation.
Markdown to HTML
Convert Markdown to HTML with live preview. Free online Markdown to HTML converter.
JSON Diff
Compare two JSON objects and find differences. Free online JSON diff tool.
URL Parser
Parse URLs into components. Extract protocol, host, path, query parameters. Free URL analyzer.
Line Sorter
Sort lines alphabetically, numerically, by length, or randomly. Free online line sorter.
Remove Duplicate Lines
Remove duplicate lines from text. Deduplicate lists and find repeated entries.
Text Reverse
Reverse text characters, words, or lines. Free online text reverse tool.
How to Use
Choose Your Tool
Select the tool you need from our wide collection.
Enter Your Data
Paste, type, or upload the data you want to convert or process.
Get Your Result
Instantly see your result, then copy or download it with a single click.