Conversion Tools
Free Online Converters for Files, Units, Numbers, Subtitles, and Format Transformation
Browse our collection of free online conversion tools for documents, subtitles, numbers, text, and measurement units. Instant results, no registration required.
All Conversion Tools
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What Are Conversion Tools?
Conversion tools are free online utilities that transform data from one format, unit, or encoding to another. They eliminate the need for specialized software or manual calculations by handling the conversion logic in your browser. ToolsConverters offers 50 conversion tools covering file formats, number systems, text encodings, subtitle formats, measurement units, and document types.
Each tool is designed for a specific conversion workflow. Instead of installing desktop software or writing scripts, you open the tool, provide your input, and get the result immediately. All processing happens client-side in JavaScript, so your data never leaves your device.
Conversion Categories
The 50 tools in this category are organized into six groups based on what they convert.
Number System and Base Converters
These tools convert numbers between different numeral systems used in computing, mathematics, and data encoding.
- HEX to Binary and Binary to HEX — Convert between hexadecimal and binary, commonly used in programming and networking.
- Decimal to Binary and Binary to Decimal — Convert between base-10 and base-2, essential for understanding how computers represent numbers.
- HEX to Decimal and Decimal to HEX — Convert between hexadecimal and decimal for memory addresses, color codes, and data analysis.
- Octal to Binary, Binary to Octal, Octal to Decimal, Decimal to Octal, HEX to Octal, and Octal to HEX — Complete octal conversion coverage for legacy systems and Unix file permissions.
- Number to Roman Numerals and Roman Numerals to Number — Convert between Arabic numerals and Roman numeral notation for clocks, book chapters, and formal numbering.
Text and Encoding Converters
These tools convert text between different character encoding schemes and data representations.
- ASCII to Text and Text to ASCII — Convert between readable text and ASCII character codes used in programming and data protocols.
- Text to HEX and HEX to Text — Convert text strings to hexadecimal representation and back, useful for debugging and data inspection.
- Text to Decimal and Decimal to Text — Convert text to decimal ASCII codes and decode decimal values back to characters.
- Text to Octal and Octal to Text — Convert text to octal ASCII representation and decode octal codes back to text.
- ASCII to Binary and Binary to ASCII — Convert between ASCII characters and their binary representation for low-level data work.
Unit and Measurement Converters
These tools convert between units of measurement across different systems, including metric, imperial, and specialized domains.
- Weight Converter — Convert between kilograms, pounds, ounces, grams, stone, and metric tons.
- Volume Converter — Convert between liters, gallons, milliliters, cups, and fluid ounces.
- Area Converter — Convert between square meters, square feet, acres, hectares, and other area units.
- Speed Converter — Convert between km/h, mph, m/s, feet per second, and knots.
- Currency Converter — Convert between world currencies using current exchange rates.
- Time Converter — Convert between hours, minutes, seconds, days, weeks, and other time units.
- Pressure Converter — Convert between pascals, bars, PSI, atmospheres, and mmHg.
- Power Converter — Convert between watts, kilowatts, horsepower, and BTU per hour.
- Energy Converter — Convert between joules, kilojoules, calories, kilocalories, kilowatt-hours, and BTU.
- Frequency Converter — Convert between hertz, kilohertz, megahertz, and gigahertz.
- Angle Converter — Convert between degrees, radians, and gradians.
- Current Converter — Convert between amperes, milliamperes, and kiloamperes.
- Charge Converter — Convert between coulombs, millicoulombs, and microcoulombs.
- Torque Converter — Convert between newton-meters, foot-pounds, and inch-pounds.
- Illuminance Converter — Convert between lux and foot-candles for lighting calculations.
- Pace Converter — Convert between minutes per kilometer and minutes per mile for running and cycling.
- Digital Converter — Convert between bits, bytes, kilobytes, megabytes, gigabytes, and terabytes.
- Each Converter — Convert between piece, dozen, score, gross, and ream.
- Parts Per Converter — Convert between PPM, PPB, percent, and permille.
- Reactive Power Converter — Convert between VAR, kVAR, and MVAR for electrical engineering.
- Apparent Power Converter — Convert between VA, kVA, and MVA for electrical systems.
- Reactive Energy Converter — Convert between VARh, kVARh, and MVARh.
- Volumetric Flow Rate Converter — Convert between cubic meters per second, liters per minute, and gallons per minute.
Subtitle Format Converters
These tools convert between popular subtitle file formats used in video production and streaming.
- VTT to SRT — Convert WebVTT subtitle files to SubRip format for wider player compatibility.
- SRT to VTT — Convert SubRip subtitle files to WebVTT for HTML5 video players and platforms that require VTT.
Document Converters
These tools convert between document file formats for cross-platform compatibility.
- Word to ODT — Convert Microsoft Word documents to OpenDocument Text format for use with LibreOffice and other ODF-compatible applications.
How to Choose the Right Converter
With 50 tools available, selecting the right one depends on three things: what type of data you have, what format you need, and the domain you are working in.
If you are converting a number between numeral systems (decimal, binary, hex, octal), use the number system converters. If you are converting text between encodings (ASCII, hex, decimal, octal), use the text encoding converters. If you are converting physical measurements (weight, volume, speed, pressure), use the corresponding unit converter. If you are working with subtitle files, use the VTT/SRT tools. If you need to convert a Word document to an open format, use the Word to ODT tool.
When in doubt, check the tool description on its page. Each tool clearly states what it converts and what inputs it accepts.
How Online Conversion Works
Every conversion tool on ToolsConverters runs directly in your web browser. There is no server-side processing for most tools. When you enter a value or upload a file, the tool applies the conversion formula or parsing logic using JavaScript and displays the result immediately.
For number and unit conversions, the math happens in memory. For text encoding conversions, the tool translates character codes between formats. For subtitle and document conversions, the tool parses the input file structure and reconstructs it in the target format. Because everything runs locally, your data stays on your device throughout the process.
Common Use Cases
Conversion tools are used across many professional and personal contexts:
- Programming and development — Developers frequently convert between hex, binary, decimal, and octal for debugging, memory analysis, and data encoding. ASCII converters help inspect raw data streams.
- Web design — Text to HEX converters help inspect color codes and encoded strings. RGB to HEX conversions are common in CSS workflows.
- Data analysis — Number base conversions are essential when working with different data representations, network addresses, or file formats.
- Video production — Subtitle format converters help editors switch between VTT and SRT depending on the target platform or player.
- International business — Currency converters provide quick exchange rate calculations for transactions, budgeting, and financial reporting.
- Science and engineering — Unit converters for pressure, energy, power, frequency, and current support calculations in physics, electrical engineering, and chemistry.
- Education — Roman numeral converters and number base tools help students understand different numeral systems and their historical context.
- Fitness and sports — Pace converters help runners and cyclists switch between min/km and min/mile for training logs and race planning.
Benefits of Using Online Conversion Tools
- No installation — Every tool runs in your browser. There is nothing to download, install, or configure.
- Free to use — All conversion tools are available without registration, subscription, or payment.
- Works on any device — The tools are responsive and function on desktops, laptops, tablets, and smartphones across all modern browsers.
- Privacy-conscious — Most processing happens client-side in your browser. No input data is sent to or stored on external servers.
- Instant results — Conversions complete in real time as you type or immediately after you click the convert button.
- Covers multiple domains — From number systems and text encodings to physical units and document formats, the category provides a broad set of converters in one place.
Related Tool Categories
Conversion tools complement other categories on ToolsConverters:
- Calculator Tools — Mathematical and financial calculators for everyday and professional use.
- Image Tools — Image format converters, compressors, and resizers for JPG, PNG, WebP, and other formats.
- PDF Tools — PDF converters, editors, and document management tools.
- Text Tools — Text utilities for counting, formatting, encoding, and analyzing text content.
- Web Tools — Web development utilities for URLs, HTTP status codes, and online diagnostics.
Privacy
All conversion tools on ToolsConverters process your data locally in the browser. No files or values are uploaded to our servers. We do not store, log, or share any data you enter into these tools.
How To Use
- Select the appropriate conversion tool based on what you need to convert: numbers between bases, text between encodings, measurement units, subtitle formats, or document types.
- Enter your input. For number and unit converters, type a value. For text encoding converters, paste or type text. For subtitle and document converters, upload or paste your file content.
- Confirm the target format or unit. Most tools show all available output options so you can select the one you need.
- Start the conversion. The tool processes your input instantly using browser-based JavaScript.
- Review and use the result. Copy the converted value to your clipboard, or download the output file for subtitle and document conversions.
Benefits
- No installation required — every tool runs in your browser with nothing to download or configure.
- Free to use — all 50 conversion tools are available without registration, subscription, or payment.
- Works on any device — responsive design ensures functionality on desktops, laptops, tablets, and smartphones across modern browsers.
- Privacy-conscious processing — most conversions happen client-side in your browser. No input data is sent to or stored on external servers.
- Instant results — number and unit conversions complete in real time. File-based conversions process within seconds.
- Covers multiple domains — from number systems and text encodings to physical units and document formats, all conversion types are accessible from one category.