70+ Free Online Tools
Calculators, converters, generators, and developer tools — all running in your browser. No signup, no ads, no data collection.
Word Counter
Count words, characters, sentences, paragraphs, reading time, and speaking time instantly.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and aLtErNaTiNg CaSe.
Text Reverser
Reverse entire text, words only, each word's letters, or lines. Multiple reversal modes available.
Lorem Ipsum Generator
Generate paragraphs, words, or sentences of placeholder text for designs and layouts.
Duplicate Line Remover
Remove exact or case-insensitive duplicate lines from text while preserving original order.
Text to Slug
Convert text to SEO-friendly URL slugs with customizable separators.
Whitespace Remover
Remove leading/trailing spaces, extra spaces, tabs, or blank lines from text.
Character Counter
Count letters, numbers, spaces, special characters, lines, and unique characters with visual breakdown.
Percentage Calculator
Calculate percentages, percentage increase/decrease, and percentage-based operations instantly.
Age Calculator
Calculate exact age in years, months, days, hours, minutes, and seconds from any date of birth.
BMI Calculator
Calculate Body Mass Index with category indicators, health reference chart, and metric/imperial support.
Loan / EMI Calculator
Calculate monthly EMI, total interest, total payment, and generate a detailed amortization table.
Discount Calculator
Calculate discount amounts, final prices, savings, and reverse discount calculations.
Tip Calculator
Calculate tip amounts and per-person splits with quick percentage buttons and custom tip options.
Number to Words
Convert numbers up to 999 trillion into written English words with decimal support.
Roman Numeral Converter
Convert between regular numbers (1-3999) and Roman numerals in both directions.
Unit Converter
Convert between length, weight, area, volume, speed, energy, pressure, and power units instantly.
Temperature Converter
Convert between Celsius, Fahrenheit, Kelvin, Rankine, and Réaumur simultaneously.
Binary Converter
Convert between decimal, binary, octal, and hexadecimal with step-by-step explanations.
HEX to RGB Converter
Convert between HEX, RGB, RGBA, HSL, and HSV color formats with live color preview.
Base64 Encoder / Decoder
Encode text to Base64 and decode Base64 strings. Supports file encoding too.
Time Converter
Convert between seconds, minutes, hours, days, weeks, months, and years instantly.
Data Size Converter
Convert between bits, bytes, KB, MB, GB, TB, PB with SI or binary (IEC) toggle.
Angle Converter
Convert between degrees, radians, gradians, and turns with precision.
Date Difference Calculator
Calculate the difference between two dates in days, weeks, months, and years with workday options.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates in any timezone.
Day of Year Calculator
Calculate day number, week number, quarter, and leap year status for any date.
Countdown Timer
Create live countdown timers to any date/time with localStorage persistence.
Stopwatch
Start, stop, lap, and reset with millisecond precision. Track multiple laps.
Time Zone Converter
Convert time between world timezones using the browser's Intl API.
Password Generator
Generate strong random passwords with customizable length, character types, and bulk generation.
Password Strength Checker
Evaluate password strength with scoring meter and improvement suggestions.
MD5 Hash Generator
Generate MD5 hashes from text using a client-side JavaScript implementation.
SHA256 Hash Generator
Generate SHA-256, SHA-1, SHA-384, and SHA-512 hashes using the Web Crypto API.
URL Encoder / Decoder
Encode and decode URLs and URL components for safe transmission.
UUID Generator
Generate UUID v4 with bulk generation, case toggle, and hyphen options.
JSON Formatter & Validator
Format, minify, and validate JSON with syntax highlighting and error detection.
HTML Minifier
Minify HTML by removing whitespace, comments, and blank lines to reduce file size.
CSS Minifier
Minify CSS by removing comments, whitespace, and newlines for smaller file sizes.
JavaScript Minifier
Minify JavaScript by removing comments, extra whitespace, and unnecessary characters.
HTML Encoder / Decoder
Encode and decode HTML special characters and named entities.
Regex Tester
Test regular expressions against strings with flags, match highlighting, and capture groups.
JSON to CSV Converter
Convert JSON arrays to CSV format with download option and custom delimiters.
CSV to JSON Converter
Convert CSV data to JSON array format with automatic header detection.
Color Picker
Visual color picker with HEX, RGB, HSL input and recently used colors palette.
Gradient Generator
Generate linear and radial CSS gradients with multiple color stops and live preview.
Color Mixer
Mix two colors with adjustable ratio and view results in HEX, RGB, and HSL formats.
HEX to RGBA Converter
Convert HEX to RGBA, RGB, HSL, HSV with adjustable opacity slider.
Color Name Finder
Match any color to the nearest CSS named color with side-by-side comparison.
Image Resizer
Resize images with aspect ratio lock and percentage scaling via Canvas API.
Image Compressor
Compress images with quality slider and see file size reduction in real-time.
Image Cropper
Crop images with preset aspect ratios and intuitive drag-to-crop interface.
Image Converter
Convert between JPG, PNG, WebP, and GIF formats using Canvas API.
Image to Base64
Convert images to Base64 encoding and decode Base64 strings back to images.
Scientific Calculator
Full scientific calculator with trigonometry, logarithms, constants, and calculation history.
LCM & HCF Calculator
Calculate Least Common Multiple and Greatest Common Divisor with step-by-step working.
Prime Number Checker
Check if numbers are prime and list all prime numbers up to N.
Average Calculator
Calculate mean, median, mode, range, variance, and standard deviation for any dataset.
Ratio Calculator
Simplify ratios, find missing values, and divide values proportionally by ratios.
QR Code Generator
Generate QR codes from text, URLs, emails, or phone numbers with customizable size.
Barcode Generator
Generate barcodes in Code128, EAN-13, UPC-A, and Code39 formats.
Meta Tag Generator
Generate HTML meta tags for SEO with Open Graph and Twitter Card preview.
Favicon Generator
Generate favicons from images or text/emoji at multiple sizes (16x16 to 512x512).
CSS Box Shadow Generator
Generate CSS box shadows with multiple layers, inset toggle, and live preview.
CSS Border Radius Generator
Generate CSS border radius with individual corner controls and live preview.
Text to Binary
Convert text to binary representation with ASCII values for each character.
Morse Code Translator
Translate between text and Morse code with audio playback capability.
Aspect Ratio Calculator
Calculate aspect ratios and find missing dimensions from known ratios.
Random Number Generator
Generate random numbers with min/max range, count, duplicate toggle, and sorting.
Word Frequency Counter
Analyze word frequency in text with stop words filtering, visual chart, and CSV export.