All free online tools
66 tools across 8 categories. Search or browse below.
๐ฐ Finance Calculators
Category guide โ๐ฆ Loan Calculator
Find your monthly payment, total interest and payoff schedule for any fixed-rate loan.
๐ Mortgage Calculator
Estimate your full monthly house payment including tax, insurance, PMI and HOA.
๐ Auto Loan Calculator
Estimate a car payment including down payment, trade-in, sales tax and dealer fees.
๐ Compound Interest Calculator
See how savings and investments grow with compounding and regular contributions.
๐งฎ Simple Interest Calculator
Calculate simple interest and the total amount owed or earned with I = P ร R ร T.
๐ฏ Savings Goal Calculator
Find out how much to save each month to reach a goal by your deadline.
๐ณ Credit Card Payoff Calculator
See how long a credit card balance takes to pay off โ and what it really costs.
๐ Inflation Calculator
See how inflation changes future prices and the buying power of your money.
๐ CAGR Calculator
Find the compound annual growth rate between a starting and ending value.
๐ต Salary to Hourly Calculator
Convert annual salary to hourly pay (or hourly to salary) plus weekly and monthly amounts.
๐ Business & Shopping Calculators
Category guide โ๏ผ Percentage Calculator
Solve any everyday percentage question: X% of Y, X is what % of Y, and more.
โ๏ธ Percentage Change Calculator
Find the percent increase or decrease between an old and a new value.
๐ท๏ธ Discount Calculator
Find the sale price and savings, including "extra % off" stacked discounts and tax.
๐งพ Sales Tax Calculator
Add sales tax to a price, or remove it from a total that already includes tax.
๐ฝ๏ธ Tip Calculator
Work out the tip and split the bill fairly between everyone at the table.
๐น Profit Margin Calculator
Find your profit margin from cost and price โ or the price needed for a target margin.
โ Markup Calculator
Get the selling price from your cost and markup โ plus the matching profit margin.
โ๏ธ Break-Even Calculator
Find how many units you need to sell to cover your costs.
๐ ROI Calculator
Measure the return on an investment, project or marketing campaign.
โค๏ธ Health & Fitness Calculators
Category guide โ๐ Date & Time Calculators
Category guide โ๐ Age Calculator
Find exact age in years, months and days โ plus a countdown to the next birthday.
๐ Days Between Dates Calculator
Count the days, weeks and months between any two dates.
โ Add Days to Date Calculator
Add or subtract days, weeks, months or years to find a future or past date.
๐๏ธ Business Days Calculator
Count working days between two dates, optionally skipping US federal holidays.
โฑ๏ธ Time Duration Calculator
Find the hours and minutes between two times โ including overnight shifts and breaks.
๐ Day of the Week Calculator
Find which day of the week any date falls on โ past or future.
#๏ธโฃ Week Number Calculator
Find the ISO week number for any date and the dates that week covers.
๐ Time Zone Converter
Convert a date and time between US and world time zones, with daylight saving built in.
๐ Unit Converters
Category guide โ๐ Length Converter
Convert inches, feet, miles, centimeters, meters and more โ all units at once.
๐๏ธ Weight Converter
Convert pounds, kilograms, ounces, grams, stone and tons instantly.
๐ก๏ธ Temperature Converter
Convert between Fahrenheit, Celsius, Kelvin and Rankine with exact formulas.
๐งช Volume Converter
Convert cups, spoons, fluid ounces, gallons, liters and milliliters โ US and UK.
๐ Area Converter
Convert square feet, square meters, acres and hectares for rooms, homes and land.
๐จ Speed Converter
Convert mph, km/h, knots, meters per second and feet per second.
๐พ Data Storage Converter
Convert bytes, KB, MB, GB, TB and binary MiB/GiB/TiB units.
โ Time Unit Converter
Convert seconds, minutes, hours, days, weeks, months and years.
๐ฑ Currency Converter
Convert between 160+ world currencies using daily-updated reference rates.
๐ข Number Base Converter
Convert numbers between binary, octal, decimal, hexadecimal and any base 2โ36.
๐๏ธ Roman Numeral Converter
Convert numbers to Roman numerals and Roman numerals back to numbers.
๐ค Number to Words Converter
Spell out any number in English words, or format a dollar amount for a check.
โ๏ธ Text Tools
Category guide โ๐ Word Counter
Count words, characters, sentences and paragraphs โ plus reading time and top keywords.
๐ก Character Counter
Count characters and check limits for social posts, SMS, titles and meta descriptions.
๐ Case Converter
Change text to UPPERCASE, lowercase, Title Case, Sentence case and more.
๐ Slug Generator
Turn titles into clean, lowercase, SEO-friendly URL slugs.
โฉ๏ธ Remove Line Breaks
Join broken lines from PDFs and emails into clean paragraphs.
๐งน Remove Duplicate Lines
Remove repeated lines from lists of emails, keywords, names or URLs.
๐ค Sort Lines
Alphabetize lists AโZ or ZโA, sort naturally by number, by length or reverse them.
๐ Reverse Text
Write text backwards, reverse word order, or flip the order of lines.
๐ Find and Replace
Find and replace words or phrases in any text โ with case, whole-word and regex options.
โฃ Whitespace Remover
Remove extra spaces, tabs and blank lines from text in one click.
๐ Lorem Ipsum Generator
Generate placeholder paragraphs, sentences or words for designs and mockups.
๐ผ๏ธ PDF & Image Tools
Category guide โ๐ Merge PDF
Combine several PDF files into one document โ privately, right in your browser.
โ๏ธ Split PDF
Extract specific pages from a PDF or split it into one file per page.
๐จ๏ธ Image to PDF
Turn photos, screenshots and scans into a single PDF document.
๐ผ๏ธ Image Resizer
Resize photos to exact pixels or a percentage, keeping the aspect ratio.
๐๏ธ Image Compressor
Shrink image file size for email, websites and upload limits โ and compare the result.
๐ Image Converter
Convert images between PNG, JPG and WebP โ several at once.
๐งฐ Web & Utility Tools
Category guide โโฆ QR Code Generator
Create free QR codes for links, Wi-Fi, email, phone and text โ they never expire.
๐ Password Generator
Generate strong, truly random passwords on your device โ never sent anywhere.
๐ฒ Random Number Generator
Pick one or many fair random numbers in any range, with or without repeats.
๐ List Randomizer & Name Picker
Shuffle any list or draw fair random winners for giveaways, teams and classes.
{ } JSON Formatter & Validator
Beautify, validate and minify JSON โ with clear error locations.
๐ฃ Base64 Encode & Decode
Encode text to Base64 or decode Base64 back to text, with full UTF-8 support.
๐ URL Encode & Decode
Percent-encode text for URLs or decode %-encoded links back to readable text.