All Tools
Browse our complete collection of free online tools.
Word Counter
Count words, characters, sentences, and paragraphs in your text instantly.
Case Converter
Convert text between UPPER, lower, Title, camelCase, snake_case, and more.
Text Reverser
Reverse text by characters, words, or lines instantly.
Slug Generator
Convert any text into a clean, URL-friendly slug.
Remove Duplicate Lines
Remove duplicate lines from text with options for case sensitivity and trimming.
Find & Replace
Find and replace text with support for regular expressions.
Character Counter
Detailed character, word, line, and paragraph statistics for any text.
Number to Words
Spell numbers in English, including negatives, decimals, and large magnitudes.
Text Sorter
Sort lines alphabetically, by length, numerically, or shuffle randomly.
Whitespace Remover
Trim, collapse spaces, remove tabs, blank lines, or all spaces with live counts.
Text Repeater
Repeat text many times with newline, space, comma, or custom separators.
Upside Down Text
Flip text with Unicode upside-down letters and reverse for physical flipping.
Strikethrough Text
Apply Unicode combining strikethrough, underline, or slash overlay to each character.
Small Text Generator
Unicode superscript and subscript versions of your text with copy buttons.
JSON Formatter & Validator
Format, validate, and beautify JSON data with syntax highlighting.
Base64 Encode / Decode
Encode text to Base64 or decode Base64 strings back to text.
URL Encode / Decode
Encode or decode URL components and full URLs.
Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text.
Regex Tester
Test regular expressions with real-time matching and group highlighting.
Markdown Preview
Write Markdown and see a live rendered preview side by side.
Color Converter
Convert colors between HEX, RGB, and HSL formats instantly.
Temperature Converter
Convert temperatures between Celsius, Fahrenheit, and Kelvin instantly.
Length Converter
Convert between millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles.
Weight Converter
Convert between grams, kilograms, pounds, ounces, stones, and metric tons.
Data Storage Converter
Convert between bytes, KB, MB, GB, TB, and PB instantly.
Speed Converter
Convert between m/s, km/h, mph, knots, ft/s, and Mach.
Time Zone Converter
Convert date and time between 15 major time zones worldwide.
Aspect Ratio Calculator
Simplify display ratios, apply presets, or compute a missing width or height from a ratio.
Shoe Size Converter
Convert shoe sizes between US men, US women, EU, UK, and Japan (cm) with a clear grid.
Cooking Unit Converter
Convert kitchen volume and weight units, plus cup weights for common ingredients.
Fuel Cost Calculator
Estimate fuel volume and trip cost for US miles and mpg or metric km and liters per 100 km.
Electricity Cost Calculator
Estimate kWh and daily to yearly cost from wattage, hours per day, and price per kWh.
Area Converter
Convert between metric and imperial area units including acres and hectares.
Volume Converter
Convert milliliters, liters, cubic meters, and US cups through gallons in one view.
Pressure Converter
Convert pascal, kilopascal, bar, psi, atmosphere, mmHg, and inHg in one step.
Lorem Ipsum Generator
Generate placeholder text in paragraphs, sentences, or words.
Password Generator
Generate strong, random passwords with customizable length and character sets.
UUID Generator
Generate random v4 UUIDs with options for uppercase and no-dash format.
Random Number Generator
Generate random numbers with customizable range, count, and uniqueness.
Percentage Calculator
Calculate percentages: X% of Y, X is what % of Y, and percentage change.
BMI Calculator
Calculate your Body Mass Index with metric or imperial units.
Compound Interest Calculator
Calculate compound interest with customizable principal, rate, frequency, and time.
Age Calculator
Calculate your exact age in years, months, days, and more from your date of birth.
Date Calculator
Calculate days between two dates or add/subtract days from a date.
Loan Calculator
Calculate monthly payments, total interest, and view a full amortization schedule.
Calorie Calculator
Estimate daily calorie needs based on age, gender, weight, height, and activity level.
Tip Calculator
Calculate tips and split bills evenly between any number of people.
Salary Calculator
Convert between annual, monthly, weekly, and hourly pay using your work schedule.
ROI Calculator
Compute return on investment, annualized return, and profit or loss over time.
Discount Calculator
Find the sale price and savings from an original price and discount percentage.
Markup Calculator
Calculate selling price and margin from cost and markup, or reverse-engineer from prices.
Sales Tax Calculator
Add sales tax to a pre-tax amount with common US rate presets.
Savings Goal Calculator
Estimate how many months to reach a savings goal with contributions and interest.
Break-Even Calculator
Find break-even units and revenue from fixed costs, variable cost, and price.
Inflation Calculator
See future nominal amounts, purchasing power, and a year-by-year inflation table.
CSS Gradient Generator
Create beautiful CSS linear and radial gradients with a visual editor.
Image to Base64 Converter
Convert images to Base64 data URI strings for embedding in HTML and CSS.
Diff Checker
Compare two texts side by side and highlight the differences line by line.
HTML Entity Encoder / Decoder
Encode special characters to HTML entities or decode entities back to text.
JWT Decoder
Decode and inspect JSON Web Tokens - view header, payload, and expiration status.
Roman Numeral Converter
Convert between Roman numerals and decimal numbers (1-3999).
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal instantly.
Timer & Stopwatch
Countdown timer with alarm and a precision stopwatch with lap tracking.
Scientific Calculator
Full-featured calculator with trigonometry, logarithms, powers, and memory.
GPA Calculator
Calculate weighted GPA on a 4.0 scale from letter grades and credit hours.
Standard Deviation Calculator
Calculate mean, median, mode, variance, and standard deviation from a data set.
Fraction Calculator
Add, subtract, multiply, and divide fractions with automatic simplification.
Quadratic Equation Solver
Solve axยฒ + bx + c = 0 with real or complex roots, vertex, and axis of symmetry.
Average Calculator
Calculate arithmetic, weighted, geometric, and harmonic means from a set of numbers.