Free Online Tools for Everyone
Calculators, converters, developer tools, and more — fast, free, and no signup required.
🧮 Calculators
BMI Calculator
Calculate your Body Mass Index (BMI) instantly. Enter your height and weight to check if you are underweight, normal, or overweight.
CalculatorsLoan Calculator
Calculate monthly loan payments, total interest, and amortization schedule. Perfect for mortgage, auto loan, and personal loan planning.
CalculatorsPercentage Calculator
Calculate percentages easily. Find what percent one number is of another, calculate percentage increase/decrease, and more.
CalculatorsAge Calculator
Calculate exact age in years, months, days, hours, and minutes. Find the time difference between any two dates.
CalculatorsCompound Interest Calculator
Calculate compound interest on your investments. See year-by-year growth with different compounding frequencies and monthly contributions.
CalculatorsTip Calculator
Calculate tips instantly for any bill. Split between multiple people, choose tip percentage, and see per-person amounts.
Calculators🔄 Converters
Unit Converter
Convert between different units of length, weight, temperature, speed, area, volume, and more. Fast and accurate conversions.
ConvertersColor Converter
Convert colors between HEX, RGB, HSL, and HSV formats. Pick colors and see live preview with color codes.
ConvertersBase64 Encoder / Decoder
Encode text or files to Base64 format, or decode Base64 strings back to plain text. Essential tool for developers and data processing.
ConvertersTemperature Converter
Convert between Celsius, Fahrenheit, and Kelvin instantly. Real-time conversion with visual thermometer.
Converters💻 Developer Tools
Password Generator
Generate strong, random passwords with customizable length and character options. Create secure passwords for all your accounts.
Developer ToolsJSON Formatter & Validator
Format, beautify, minify, and validate JSON data online. Syntax highlighting and error detection for JSON strings.
Developer ToolsURL Encoder / Decoder
Encode or decode URLs and query parameters. Convert special characters to percent-encoding and vice versa.
Developer ToolsQR Code Generator
Generate QR codes for URLs, text, email, phone numbers, and WiFi. Customize colors and download as PNG image.
Developer ToolsMarkdown Preview
Write Markdown on the left, see rendered HTML on the right in real-time. Copy or download your markdown instantly.
Developer ToolsHTML/CSS/JS Minifier
Minify HTML, CSS, and JavaScript code online. Remove whitespace, comments, and reduce file size instantly.
Developer ToolsDiff Checker
Compare two texts side by side and find differences. Highlights additions, deletions, and unchanged lines.
Developer ToolsUUID Generator
Generate UUIDs (v4 random or v1 timestamp-based) in bulk. Copy individual or all at once, with or without hyphens.
Developer ToolsHash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes for text or files. Fast cryptographic hashing in your browser.
Developer ToolsCron Expression Parser
Decode cron expressions into human-readable descriptions. See next execution times and use common presets.
Developer ToolsRegex Tester
Test regular expressions in real-time with highlighted matches, capture groups, and common presets for email, URL, IP, and more.
Developer ToolsCSS Gradient Generator
Create beautiful CSS gradients visually. Linear, radial, and conic gradients with custom color stops and presets.
Developer ToolsMeta Tag Generator
Generate HTML meta tags for SEO, Open Graph, and Twitter Cards. Preview and copy all tags instantly.
Developer Tools📝 Text Tools
📄 PDF Tools
PDF Merge
Combine multiple PDF files into one. Drag and drop to reorder, then merge and download the combined PDF.
PDF ToolsPDF Split
Split a PDF into multiple files by page ranges. Extract specific pages and download as separate PDFs.
PDF ToolsPDF Watermark
Add tiled text watermarks to PDF pages. Customize opacity, rotation, font size, color, and spacing.
PDF ToolsImage to PDF
Convert images (JPG, PNG, etc.) to PDF. Upload multiple images, reorder pages, and download as a single PDF.
PDF ToolsPDF to Image
Convert PDF pages to PNG or JPEG images. Choose DPI and quality, preview all pages, and download individually.
PDF Tools🛠️ Utilities
Timezone Converter
Convert time between timezones instantly. Perfect for scheduling meetings across different time zones.
UtilitiesStopwatch & Timer
Online stopwatch with millisecond precision and countdown timer with presets. Includes lap tracking and Pomodoro mode.
UtilitiesRandom Number Generator
Generate random numbers, strings, or colors. Set ranges, character sets, and formats with cryptographic randomness.
UtilitiesIP Address Lookup
Look up any IP address or domain to find location, ISP, timezone, and more. Also check your own public IP address.
UtilitiesInvoice Generator
Create professional invoices and download as PDF. Add sender and client details, line items with auto-calculated totals, tax, and discount.
UtilitiesCountdown Timer
Create countdown timers for any event. Set a target date and watch the live countdown with days, hours, minutes, and seconds.
UtilitiesImage Compressor
Compress images online to reduce file size. Adjust quality and dimensions, then download optimized images.
UtilitiesImage Resizer
Resize images to any dimension. Preset sizes, custom dimensions, and format conversion (PNG, JPEG, WebP).
UtilitiesText to Speech
Convert text to speech using your browser. Choose voices, adjust speed and pitch, and listen to any text.
UtilitiesPrivacy Policy Generator
Generate a professional privacy policy for your website. Customize for GDPR, CCPA, and common data practices.
Utilities