Tools directory
All tools
45 free tools, organized by what you're trying to do. Every one runs in your browser.
Text & Writing
Word & Character Counter
Count words, characters, sentences and paragraphs instantly.
Case Converter
Convert text to upper, lower, title, or sentence case.
Lorem Ipsum Generator
Generate placeholder paragraphs, sentences or words.
Text Diff Checker
Compare two blocks of text and highlight differences.
Text Reverser
Reverse text, words, or lines with one click.
Remove Duplicate Lines
Deduplicate lines from a list, keeping order intact.
Whitespace Cleaner
Trim extra spaces, tabs and blank lines from text.
Line Sorter
Sort lines alphabetically, numerically or reverse.
Character Frequency Counter
See how often each character appears in your text.
SEO & Web
Meta Tag Generator
Build SEO-friendly meta and Open Graph tags in one click.
URL Slug Generator
Turn any title into a clean, SEO-friendly URL slug.
Robots.txt Generator
Create a valid robots.txt file for your website.
URL Encoder / Decoder
Percent-encode or decode URLs and query strings safely.
Keyword Density Checker
Analyze keyword frequency and density of any text.
Open Graph Preview
Preview how your link looks when shared on social media.
XML Sitemap Generator
Generate a sitemap.xml from a list of URLs.
Hashtag Generator
Turn a topic or sentence into ready-to-use hashtags.
UTM Link Builder
Build UTM-tagged URLs for campaign tracking.
Developer
JSON Formatter & Validator
Beautify, minify and validate JSON in the browser.
Base64 Encoder / Decoder
Encode text to Base64 or decode it back — instantly.
Password Generator
Generate strong, random, cryptographically secure passwords.
UUID Generator
Generate RFC-4122 v4 UUIDs in bulk, right in your browser.
HEX ↔ RGB Color Converter
Convert between HEX and RGB color codes with a live preview.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates.
Random Number Generator
Generate random numbers in any range, with or without duplicates.
JWT Decoder
Decode JWT header and payload — locally, no server calls.
Regex Tester
Test regular expressions against sample text in real time.
Converters & Calculators
Image Compressor
Compress JPG, PNG and WebP images directly in your browser.
Percentage Calculator
Calculate percentages, increases and decreases with ease.
Age Calculator
Calculate exact age in years, months, weeks and days.
Length Converter
Convert meters, feet, inches, miles, kilometers and more.
Temperature Converter
Convert Celsius, Fahrenheit and Kelvin instantly.
Weight Converter
Convert kilograms, pounds, ounces, grams and stones.
Number to Words
Convert any number into its written English form.
Roman Numeral Converter
Convert between Roman numerals and Arabic numbers.
Time Duration Calculator
Find the difference between two dates or times.
Health & Finance
BMI Calculator
Calculate Body Mass Index in metric or imperial units.
Loan EMI Calculator
Estimate monthly loan payments, total interest and payoff time.
Tip Calculator
Split a bill and calculate tips per person, fast.
Compound Interest Calculator
Project savings growth with compounded interest.
Simple Interest Calculator
Calculate simple interest on principal, rate and time.
Savings Goal Calculator
Find out how much to save monthly to reach a goal.
BMR Calculator
Estimate your Basal Metabolic Rate and daily calories.
Body Fat Percentage Calculator
Estimate body fat using the U.S. Navy method.
Ideal Weight Calculator
Get an ideal weight estimate based on height and gender.