Free Online Tools

Free Online Tools

45 fast, private tools that run in your browser. No sign-up, no uploads, no limits.

All tools

Age CalculatorWork out your exact age in years, months and days — plus total days lived and your next birthday.Base64 Encode / DecodeEncode text or files to Base64, or decode Base64 back to text — with full Unicode support.BMI CalculatorCalculate your Body Mass Index in metric or imperial units and see which weight range you fall in.Car Loan Payoff CalculatorFind out how fast you can pay off your car loan with extra or biweekly payments, and how much interest you’ll save.Case ConverterChange text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case and more.Coast FIRE CalculatorFind your Coast FIRE number — the amount that, left alone to grow, becomes a full retirement fund by your target age — and see when you’ll reach it.Color ConverterConvert colors between HEX, RGB and HSL, pick from a color wheel, and get shades, tints and contrast ratios.Compound Interest CalculatorProject how your money grows with compound interest and regular contributions — with a year-by-year table and an optional inflation adjustment.Currency ConverterConvert between 150+ world currencies using exchange rates updated daily.Date CalculatorCount the days between two dates, or add and subtract days, weeks, months and years from a date.Debt Snowball vs Avalanche CalculatorList your debts, add what you can pay extra, and compare the snowball and avalanche methods side by side — payoff date, interest paid and the order you’d clear each debt.Discount CalculatorSee the final price after a percentage discount, how much you save, and stack a second discount or sales tax.GPA CalculatorCalculate your semester or cumulative GPA on the 4.0 scale from letter grades and credit hours.Hash GeneratorCompute MD5, SHA-1, SHA-256 and SHA-512 hashes of text or files, entirely in your browser.Hourly to Salary CalculatorConvert an hourly wage to an annual salary or a salary to an hourly rate — including overtime hours and unpaid time off — and see your pay per week, fortnight and month.Image CompressorShrink JPG, PNG and WebP files right in your browser. Adjust quality, compare before/after, download.Image ConverterConvert images between PNG, JPG, WebP, BMP and GIF formats in bulk, without uploading them.Image ResizerResize any image to exact pixel dimensions or a percentage, keeping the aspect ratio if you want.Image to PDFTurn JPG, PNG or WebP images into a single PDF — one image per page, with page size and margin options.Investment Fee CalculatorSee how much of your future wealth goes to fund expense ratios and advisor fees over time — including the growth you lose on the money paid away.Invoice GeneratorFill in your details and line items, see the invoice update live, and download a clean PDF — built entirely in your browser, nothing uploaded, no account needed.JSON Formatter & ValidatorPretty-print, validate and minify JSON. Errors are reported with the exact line and position.Loan CalculatorEstimate your monthly payment (EMI), total interest and a full amortization schedule for any loan.Loan Comparison CalculatorCompare two loan offers on monthly payment, total interest, fees and true cost — including the effective APR once fees are counted.Lorem Ipsum GeneratorGenerate placeholder text by paragraphs, sentences or words for mockups and layouts.Markup vs Margin CalculatorWork out selling price, profit, margin % and markup % from any two numbers — and see why a 50% markup is only a 33% margin.Merge PDFCombine multiple PDF files into one document. Reorder them by drag, then download — nothing is uploaded.Mortgage Payoff CalculatorSee how much interest you save and how many years you cut by adding extra payments to your mortgage.Number Base ConverterConvert between binary, octal, decimal and hexadecimal — type in any box and the rest update.Password GeneratorGenerate strong, random passwords or memorable passphrases — created on your device, never sent anywhere.Pay Raise CalculatorEnter your current pay and a raise as a percentage or an amount to see your new salary, hourly rate, and the extra in each paycheck — plus what’s left after inflation.PDF to ImageConvert PDF pages to high-quality JPG or PNG images, all pages or a selection, straight from your browser.Percentage CalculatorFind X% of a number, what percent one number is of another, and percentage increase or decrease.QR Code GeneratorCreate QR codes for links, text, Wi-Fi networks, contact cards, email and phone numbers. Download as PNG or SVG.Regex TesterTest regular expressions against sample text with live highlighting, match details, capture groups and replace.Remove Duplicate LinesDelete duplicate lines, sort, trim, and clean up lists in one click.Savings Goal CalculatorFind out how long it will take to reach a savings target — or how much you need to put away each month to hit it by a certain date.Split PDFExtract specific pages or ranges from a PDF, or split every page into its own file — privately in your browser.Temperature ConverterConvert between Celsius, Fahrenheit and Kelvin instantly, with a handy reference table.Time Zone ConverterConvert a date and time between any two time zones, with daylight saving handled automatically.Tip CalculatorWork out the tip and split the bill between any number of people in seconds.Unit ConverterConvert length, weight, temperature, area, volume, speed, time and data units instantly.URL Encode / DecodePercent-encode text for use in URLs, or decode an encoded URL back to readable text. Also parses query strings.UUID GeneratorGenerate one or thousands of random version-4 UUIDs (GUIDs) with cryptographic randomness.Word CounterCount words, characters, sentences and paragraphs as you type, with reading time and keyword density.