Free Online Tools
Free browser-based tools: password generator, unit converter, color converter, word counter, BMI calculator and more. No signup, no upload.
Password Generator
Generate strong, secure random passwords online. Free, no signup, runs...
Unit Converter
Convert length, weight and temperature units instantly. cm to inches, ...
Color Converter
Convert colors between HEX, RGB and HSL formats instantly. Free online...
Word Counter
Count words, characters, sentences and paragraphs instantly. Free onli...
Base64 Encode / Decode
Encode text to Base64 or decode Base64 to text. Supports Unicode. Free...
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back. Shows curren...
BMI Calculator
Calculate your Body Mass Index (BMI) with metric or imperial units. In...
Loan Calculator
Calculate monthly payments, total interest and total cost for any loan...
JSON Formatter & Validator
Format, beautify and validate JSON online. Instant syntax error detect...
Random Picker & Dice
Pick random winners from a list, roll dice, or flip a coin. Free decis...
JWT Decoder
Decode JSON Web Tokens online. Inspect JWT header and payload instantl...
Hash Generator (SHA-256)
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes from text instantl...
UUID Generator
Generate random UUIDs (v4) instantly. Create one or bulk UUIDs online....
URL Encoder / Decoder
Encode or decode URLs and query strings online. Handles Unicode and sp...
HTML Entity Encoder
Encode text to HTML entities or decode HTML entities back to text. Fre...
Regex Tester
Test regular expressions online with live match highlighting. JavaScri...
Chmod Calculator
Convert between Unix file permissions and chmod numeric notation. Visu...
Binary / Hex / Decimal Converter
Convert numbers between binary, hexadecimal, decimal and octal instant...
Slug Generator
Convert any title or text into a clean SEO-friendly URL slug. Free onl...
JSON to CSV Converter
Convert JSON arrays to CSV online instantly. Free converter, runs enti...
Cron Expression Parser
Explain cron expressions in plain English. Free online cron schedule p...
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snak...
Lorem Ipsum Generator
Generate placeholder Lorem Ipsum text by paragraphs, sentences or word...
Sort & Dedupe Lines
Sort lines alphabetically, numerically or by length, and remove duplic...
Markdown Preview
Preview Markdown as rendered HTML instantly. Free online Markdown edit...
Morse Code Translator
Translate text to Morse code and decode Morse code back to text. Free ...
Percentage Calculator
Calculate percentages instantly: what is X% of Y, percentage change, a...
Discount Calculator
Calculate sale price, savings and final price after discount. Works wi...
Tip Calculator
Calculate tip amount and split the bill per person. Free online tip an...
Compound Interest Calculator
Calculate compound interest and future value of an investment. See gro...
Profit Margin Calculator
Calculate gross profit, gross margin and markup percentage from cost a...
VAT / GST Calculator
Add or remove VAT and GST from a net or gross amount. Free online tax ...
ROI Calculator
Calculate return on investment, annualized ROI and total gain or loss....
Age Calculator
Calculate your exact age in years, months and days. Free online age ca...
Date Difference Calculator
Calculate the number of days, weeks or months between two dates. Free ...
Time Zone Converter
Convert time between time zones and compare multiple cities. Free onli...
Calorie & TDEE Calculator
Calculate your BMR, TDEE and daily calorie needs for weight loss or ga...
Water Intake Calculator
Calculate how much water you should drink daily based on weight and ac...
Sleep Cycle Calculator
Find the best time to wake up based on 90-minute sleep cycles. Free be...
Aspect Ratio Calculator
Calculate and resize aspect ratios for images and video. Free W:H rati...
GPA Calculator
Calculate your semester and cumulative GPA from course grades and cred...
Roman Numeral Converter
Convert numbers to Roman numerals and Roman numerals back to numbers. ...
Online Stopwatch & Timer
Free online stopwatch with lap times and countdown timer. Runs in your...
Fuel Cost Calculator
Calculate trip fuel cost and cost per person. Free road trip fuel cost...
Emergency Fund Calculator
Calculate how much emergency savings you need based on monthly expense...
Text Diff Checker
Compare two texts line by line and see additions, deletions and unchan...
Find and Replace Text
Find and replace text online with regex support, case-sensitive matchi...
URL Parser
Break any URL into protocol, host, port, path, query parameters and fr...
XML Formatter
Beautify, indent and minify XML online. Free XML formatter with a tag ...
CSV to JSON Converter
Convert CSV to JSON online instantly. Handles quoted fields, embedded ...
YAML to JSON Converter
Convert YAML to JSON online instantly. Supports nested maps, lists, sc...
SQL Formatter
Format and beautify SQL queries online. Uppercase keywords, break line...
HTML to Markdown Converter
Convert HTML to Markdown online. Headings, lists, links, images and co...
Markdown to HTML Converter
Convert Markdown to clean HTML online. Get copy-ready HTML source from...
HTML Minifier
Minify HTML online: strip comments and collapse whitespace. See before...
Meta Tag Generator
Generate SEO meta tags with a live Google SERP preview. Title, descrip...
Schema Markup Generator
Generate JSON-LD structured data for Article, Product, FAQ and LocalBu...
Robots.txt Generator
Generate a robots.txt file with allow and disallow rules, crawl-delay ...
IP Subnet Calculator
Calculate subnet details from any IP and CIDR: network, broadcast, mas...
ASCII Table & Char Code Converter
Look up ASCII codes and convert characters to decimal, hex and binary....
Binary Text Translator
Convert text to binary and binary back to text using UTF-8 encoding. F...
Caesar Cipher Encoder
Encode and decode text with a Caesar cipher, or brute-force all 26 shi...
Color Contrast Checker
Check WCAG color contrast ratios between two colors. Pass/fail for AA ...
Color Palette Generator
Generate tints, shades, analogous, complementary and triadic palettes ...
CSS Gradient Generator
Create linear and radial CSS gradients with a live preview and copy-re...
CSS Box Shadow Generator
Design CSS box shadows with a live preview and copy-ready code. Free s...
CSS Border Radius Generator
Generate border-radius CSS for rounded corners with a live preview. Fr...
Placeholder Image Generator
Generate placeholder images in any size and color. Download PNG or JPE...
Data Storage Converter
Convert between bits, bytes, KB, MB, GB, TB and binary KiB, MiB, GiB u...
Speed Converter
Convert speed between km/h, mph, m/s, knots, ft/s and Mach. Free onlin...
Credit Card Payoff Calculator
See how long it takes to pay off a credit card and how much interest y...
Retirement Calculator
Estimate your retirement savings and how long withdrawals will last. F...
Savings Goal Calculator
Find out how long it takes to reach a savings goal with monthly deposi...
Break-Even Calculator
Calculate break-even units and revenue from fixed costs, price and var...
Hourly to Salary Converter
Convert hourly wage to annual salary and back. See daily, weekly, mont...
Body Fat Calculator
Estimate body fat percentage with the US Navy tape method. Metric meas...
Ideal Weight Calculator
Find your ideal weight range from Devine, Robinson, Miller and Hamwi f...
Pregnancy Due Date Calculator
Calculate your pregnancy due date and current week from your last peri...
Ovulation Calculator
Estimate your ovulation date and fertile window from your cycle. Free ...
Running Pace Calculator
Calculate running pace, finish time or distance. Per km or per mile wi...
One Rep Max Calculator
Estimate your one-rep max from any weight and rep count with Epley and...
Macro Calculator
Calculate daily protein, carbs and fat grams for cutting, maintaining ...
Final Grade Calculator
Find the exam score you need for your target grade, or calculate your ...
Quadratic Equation Solver
Solve quadratic equations online: real or complex roots, discriminant ...
Fraction Calculator
Add, subtract, multiply and divide fractions with automatic simplifica...
JSON to YAML Converter
Convert JSON to YAML online instantly. Handles nested objects, arrays ...
CSV to Markdown Table
Convert CSV data to a Markdown table online instantly. Perfect for Git...
Markdown Table Generator
Build a Markdown table visually and copy the code. Set rows and column...
HMAC Generator (SHA-256)
Generate HMAC-SHA256, SHA-384 or SHA-512 signatures online. Verify mes...
Unicode Escape Converter
Convert text to \uXXXX Unicode escapes and back. Free tool for develop...
NATO Phonetic Alphabet
Translate text to the NATO phonetic alphabet (Alpha, Bravo, Charlie). ...
HTTP Status Codes Reference
Look up any HTTP status code: meaning, category and when it occurs. Se...
MIME Type Lookup
Look up MIME types by file extension or search by type name. Free refe...
Inflation Calculator
See how inflation changes purchasing power over time. Convert any amou...
Debt-to-Income (DTI) Calculator
Calculate your debt-to-income ratio from monthly debt payments and inc...
Startup Runway Calculator
Calculate how many months your startup can survive on current cash and...
Freelance Rate Calculator
Calculate the hourly rate you need to charge as a freelancer, covering...
Down Payment Calculator
Calculate your home down payment, loan amount, monthly mortgage paymen...
Refinance Break-Even Calculator
Find out if refinancing saves money. Compare your current loan with th...
Car Lease Calculator
Calculate your monthly car lease payment from price, down payment, res...
Heart Rate Zones Calculator
Calculate your target heart rate zones for fat burning, cardio and pea...
Dog Age Calculator
Convert dog years to human years with the modern science-based formula...
Cost of Smoking Calculator
See how much smoking costs you per month, per year and over decades. F...
Alcohol Units Calculator
Calculate alcohol units and standard drinks in any beverage. Track you...
Blood Pressure Calculator
Check if your blood pressure reading is normal, elevated or high. Free...
Body Surface Area (BSA) Calculator
Calculate your body surface area in square meters using Mosteller and ...
Caffeine Half-Life Calculator
Find out how much caffeine is still in your system hours after your co...
Calories Burned Calculator
Calculate calories burned during any activity using MET values. Free e...
Week Number Calculator
Find the ISO 8601 week number for any date. See week starts and ends. ...
Workday Calculator
Count business days between two dates, excluding weekends. Free workin...
Zodiac Sign Calculator
Find your western zodiac sign from your birth date. Personality traits...
Chinese Zodiac Calculator
Find your Chinese zodiac animal and element from your birth year. Free...
Moon Phase Calculator
Find the current moon phase and phases for any date. Free moon phase t...
Readability Score Calculator
Calculate Flesch Reading Ease and grade level for any text. Free reada...
Keyword Density Analyzer
Analyze keyword density and word frequency in any text. Find over-opti...
Electricity Cost Calculator
Calculate the running cost of any appliance from its wattage and your ...
Download Time Calculator
Calculate how long a download will take at your internet speed. Free d...
Typing Speed Test
Test your typing speed in words per minute and accuracy. Free online t...
MPG Converter
Convert between US MPG, UK MPG, L/100km and km/L instantly. Free fuel ...
Online Metronome
Free online metronome with adjustable tempo from 30 to 240 BPM. Accent...
Decision Wheel
Spin a wheel to make a random choice from your own list of options. Fr...
CSS Unit Converter
Convert between px, rem, em, pt and percent for font sizes and spacing...
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