Free tools that show their work.
49 tools for PDFs, money, health, dates and images. Answers update as you type, every formula is explained, and your files never leave your browser.
Recently used:
Tip calculatorexample
Each of 2 pays$50.15
Bill$85.00
Tip at 18%$15.30
Total$100.30
Most popular
PDF EditorEdit existing text, fill forms, sign, annotate and rearrange pages, all in your browser. Your PDF is never uploaded.Open tool →PDF ⇄ Word ConverterConvert PDF to editable Word, or Word documents to PDF.Open tool →Merge & Split PDFCombine several PDFs into one, or split a PDF into smaller files.Open tool →Image to Text Converter (OCR)Turn photos, screenshots and scans into editable text, then copy it or download it as a Word file.Open tool →Mortgage CalculatorEstimate your full monthly house payment, including taxes, insurance, PMI and HOA fees.Open tool →QR Code GeneratorMake a QR code for a link, text, Wi-Fi login, email or phone number, and download it as PNG or SVG.Open tool →
Browse by category
49 tools in 8 categories
Math & Percentages4
Percentages, grades, tips and discounts
Dates & Time3
Ages, date gaps and timesheets
Health4
BMI, calories and pregnancy dates
Units & Measurements3
Units, fuel cost and floor area
Text & Passwords3
Word counts, letter case and passwords
All tools
No tools match that search. Try a simpler word, like “loan”, “pdf” or “image”.
PDF Tools
8 tools
PDF EditorEdit existing text, fill forms, sign, annotate and rearrange pages, all in your browser. Your PDF is never uploaded.PDF ⇄ Word ConverterConvert PDF to editable Word, or Word documents to PDF.Merge & Split PDFCombine several PDFs into one, or split a PDF into smaller files.Compress PDFShrink a PDF to fit email and upload limits, and see exactly how much smaller it gets.Image ⇄ PDF ConverterTurn images into a PDF, or PDF pages into JPG/PNG images.HTML ConverterConvert PDF to HTML, HTML to PDF, or Word to clean HTML.PDF to Text ConverterPull all the text out of a PDF in reading order, then copy it or save it as a .txt file.Page Numbers & WatermarkAdd page numbers to a PDF, or stamp a text watermark on its pages.
Money & Loans
19 tools
Mortgage CalculatorEstimate your full monthly house payment, including taxes, insurance, PMI and HOA fees.Currency ConverterConvert between 160+ currencies with exchange rates updated daily.How Much House Can I Afford?Find the home price that fits your income and debts, using lender-style debt-to-income rules.Rent vs Buy CalculatorSee whether buying or renting leaves you wealthier, and after how many years buying pays off.Mortgage Payoff CalculatorSee how much sooner you'll be mortgage-free, and how much interest you'll save, by paying extra.Salary to Hourly CalculatorConvert between hourly pay and annual salary, plus monthly, bi-weekly, weekly and daily amounts.Auto Loan CalculatorWork out your monthly car payment with trade-in, sales tax and fees, and compare loan lengths.Credit Card Payoff CalculatorFind out how long it takes to clear your credit card balance and how much interest you'll pay.Debt-to-Income Ratio CalculatorFind your debt-to-income ratio, the number lenders use to decide how much you can borrow.Retirement CalculatorProject your 401(k) or retirement savings and see how much monthly income it could provide.Compound Interest CalculatorSee how savings grow with compound interest and regular deposits, and what that money is worth after inflation.Savings Goal CalculatorFind out how much to save each month to reach your goal, or how long your goal will take.Loan CalculatorWork out your monthly payment, total interest and payoff schedule for any loan.Loan Comparison CalculatorCompare up to three loan offers side by side and see which one really costs the least.Budget Planner (50/30/20)Split your take-home pay into needs, wants and savings, and check your spending against the plan.Net Worth CalculatorAdd up what you own and what you owe to see your net worth and how your finances are balanced.Simple Interest CalculatorWork out simple interest and the total amount, or solve for the rate, time or principal.Inflation CalculatorSee how inflation changes prices and the buying power of your money over time.VAT & Sales Tax CalculatorAdd tax to a price, or work out the price before tax, at any rate.
Math & Percentages
4 tools
Percentage CalculatorThree percentage calculators in one: percent of, what percent, and percent change.GPA CalculatorWork out your semester GPA from letter grades and credits, and your new cumulative GPA.Tip CalculatorCalculate the tip, the total and each person's share in seconds.Discount CalculatorFind the final sale price and your savings, including extra discounts and tax.
Dates & Time
3 tools
Time Card CalculatorAdd up a week of clock-in and clock-out times, minus breaks, with overtime and pay.Age CalculatorFind your exact age in years, months and days, plus a countdown to your next birthday.Days Between Dates CalculatorCount the days, weeks, months and working days between any two dates.
Health
4 tools
Pregnancy Due Date CalculatorEstimate your due date and see how many weeks pregnant you are, which trimester you're in and what's coming up.Ovulation CalculatorFind your fertile window, likely ovulation day and next period for the next three cycles.Calorie CalculatorEstimate how many calories you burn each day, and how many to eat to lose, keep or gain weight.BMI CalculatorCheck your body mass index and the healthy weight range for your height.
Units & Measurements
3 tools
Square Footage CalculatorAdd up the area of one or more rooms, include extra for waste, and estimate the material cost.Unit ConverterConvert between metric and imperial units for length, weight, temperature and more.Fuel Cost CalculatorFind out what a trip will cost in fuel, and how much each passenger should chip in.
Text & Passwords
3 tools
Images & QR
5 tools
Image to Text Converter (OCR)Turn photos, screenshots and scans into editable text, then copy it or download it as a Word file.Image ResizerResize one or many images to exact pixels, a percentage or a maximum size, keeping them sharp.Image Format ConverterConvert images between JPG, PNG and WebP, one at a time or in bulk.QR Code GeneratorMake a QR code for a link, text, Wi-Fi login, email or phone number, and download it as PNG or SVG.Image CompressorShrink photo file sizes and resize images in seconds. Your files never leave your device.