Files stay on your device · No sign-up
Free online tools for everyday tasks
Compress photos, edit and sign PDFs, work out a mortgage, take-home pay or calories, and convert almost anything — free, fast and private, wherever you are.
Popular tools
Image Compressor
Shrink JPG, PNG or WEBP photos — even to an exact size in KB.Photo & Signature Resizer
Get your photo and signature to the exact size and KB a form asks for.Passport Size Photo Maker
Crop to passport size and print a sheet of photos on A4 or 4×6.Merge PDF
Combine several PDFs into one file, in the order you want.JPG to PDF
Turn photos and scans into one PDF with A4 or Letter pages.EMI Calculator
Monthly EMI, total interest and a year-by-year repayment table.SIP Calculator
Estimate SIP maturity value, with an optional yearly step-up.GST Calculator
Add or remove GST and see the CGST, SGST or IGST split.Age Calculator
Exact age in years, months and days on any date, plus next birthday.
Image Tools
Compress, resize, convert and edit photos — even to an exact KB size.
Image Compressor
Shrink JPG, PNG or WEBP photos — even to an exact size in KB.Image Resizer
Change photo dimensions in px, %, cm or inches with aspect lock.Photo & Signature Resizer
Get your photo and signature to the exact size and KB a form asks for.Passport Size Photo Maker
Crop to passport size and print a sheet of photos on A4 or 4×6.Image Converter
Convert photos between JPG, PNG and WEBP, many at once.HEIC to JPG Converter
Turn iPhone HEIC photos into JPGs that open everywhere.Crop Image
Crop photos to square, 4:3, 16:9 or passport ratio in seconds.Background Remover
Cut out people, products or pets — transparent PNG, no upload.Social Media Image Resizer
Perfect sizes for Instagram, Facebook, X, LinkedIn, YouTube and more.Remove EXIF Data
Strip GPS location and camera details from photos before sharing.Watermark Image
Add your name or © to photos — one or many at once.Blur Image
Blur or pixelate faces, plates and private details.Meme Generator
Classic top and bottom meme text on your own picture.Flip Image
Mirror photos horizontally or vertically, or rotate them.Image Color Picker
Pick exact colours from any image and get its main palette.SVG to PNG
Turn SVG files or code into sharp PNGs at any size.Favicon Generator
favicon.ico, Apple and Android icons and manifest from a logo or letters.Image to Base64
Image to Base64 data URI with ready HTML and CSS snippets.Image to Text (OCR)
OCR: copy text from photos, screenshots and scans.JPG to PNG
Convert JPG photos to PNG — up to 20 at once.PNG to JPG
Convert PNG to smaller JPG files, with a background for transparency.WEBP to JPG
Turn WEBP images into JPGs that open everywhere.WEBP to PNG
Convert WEBP to PNG with transparency kept.
PDF Tools
Merge, split, compress, sign and convert PDFs without uploading them.
Merge PDF
Combine several PDFs into one file, in the order you want.Split PDF
Split a PDF by range, into single pages, or extract chosen pages.JPG to PDF
Turn photos and scans into one PDF with A4 or Letter pages.PDF to JPG
Save each PDF page as a JPG image at the DPI you choose.Rotate PDF
Fix sideways or upside-down pages in a PDF.Organize PDF
Reorder, delete and rotate PDF pages using thumbnails.Compress PDF
Shrink a PDF for email and upload limits — without uploading it.Sign PDF
Draw, type or upload a signature and place it on your PDF.Fill PDF Form
Type into fillable PDF forms and save — optionally locked.Add Page Numbers to PDF
Number PDF pages with your choice of position and style.Watermark PDF
Stamp CONFIDENTIAL, DRAFT or your name across PDF pages.PDF to Text
Pull all the text out of a PDF, ready to copy or download.Extract Images from PDF
Save the pictures inside a PDF as PNG or JPG files.Unlock PDF
Remove a known password or restrictions from your PDF.Protect PDF
Lock a PDF with a password and AES-256 encryption.Edit PDF Metadata
Change or clear a PDF’s title, author, keywords and dates.PDF to PNG
Turn PDF pages into crisp PNG images at the resolution you need.
Finance Calculators
Mortgage, loan, savings, retirement and take-home pay calculators.
EMI Calculator
Monthly EMI, total interest and a year-by-year repayment table.SIP Calculator
Estimate SIP maturity value, with an optional yearly step-up.GST Calculator
Add or remove GST and see the CGST, SGST or IGST split.FD Calculator
Find your FD maturity amount with quarterly or monthly compounding.Loan Calculator
Monthly payment, total interest and payoff schedule for any loan.Mortgage Calculator
Monthly mortgage payment with taxes, insurance, PMI and extra payments.Home Affordability Calculator
How much house your income and down payment can support.Compound Interest Calculator
Grow savings with compound interest and regular monthly deposits.Auto Loan Calculator
Monthly car payment with sales tax, fees and trade-in.Credit Card Payoff Calculator
How long to pay off a card, or what to pay to clear it by a date.Debt Payoff Calculator
Snowball or avalanche: your debt-free date and payoff order.Tip Calculator
Work out the tip and split the bill between any number of people.Hourly to Salary Calculator
Convert hourly pay to a yearly salary, and every period in between.Savings Goal Calculator
How much to save each month — or how long your goal will take.Inflation Calculator
Future cost of today’s prices and the buying power your money loses.Retirement Calculator
Will your savings last? Shortfall, target and how long money lasts.401(k) Calculator
401(k) balance at retirement with employer match and IRS limits.Roth IRA Calculator
Roth IRA balance at retirement and the tax-free advantage.ROI Calculator
Return on investment as a %, plus the annualized return (CAGR).Refinance Calculator
Is refinancing worth it? New payment, break-even and lifetime savings.Rent vs Buy Calculator
Compare the long-run cost of renting and buying a home.APR Calculator
The real yearly cost of a loan once fees and points are included.VAT Calculator
Add or remove VAT with built-in UK, EU and African rates.Sales Tax Calculator
Add US state and local sales tax, or take it out of a total.Paycheck Calculator
US take-home pay per paycheck after federal, FICA and state tax.UK Take-Home Pay Calculator
UK salary after Income Tax, NI, pension and student loan.Nigeria PAYE Calculator
Nigeria PAYE under the 2026 tax bands, with pension and rent relief.Kenya PAYE Calculator
Kenya net pay after PAYE, SHIF, NSSF and the housing levy.South Africa Income Tax Calculator
South African PAYE with SARS brackets, rebates and UIF.Stamp Duty Calculator
UK Stamp Duty for first-time buyers, movers and second homes.
Health & Fitness Calculators
BMI, calories, body fat, pregnancy, pace and heart-rate calculators.
BMI Calculator
Body Mass Index with WHO and Asian Indian categories.Calorie Calculator
Daily calories to maintain, lose or gain weight.BMR Calculator
Basal metabolic rate with three formulas, plus daily calories by activity.Body Fat Calculator
Body fat % from a tape measure, using the US Navy method.Ideal Weight Calculator
Healthy weight range for your height, with four classic formulas.Pregnancy Due Date Calculator
Due date, weeks pregnant and milestones from your last period or IVF.Ovulation Calculator
Your fertile window, ovulation day and next six cycles.Macro Calculator
Grams of protein, carbs and fat for your calories and diet style.Water Intake Calculator
How much water to drink a day, in litres or fluid ounces.Sleep Calculator
Bedtimes and alarm times that line up with 90-minute sleep cycles.Pace Calculator
Running pace, finish time and race predictions for 5K to marathon.One Rep Max Calculator
Estimate your 1RM and training weights from any set.Heart Rate Zone Calculator
Max heart rate and five training zones, with the Karvonen option.
Math Calculators
Scientific, fraction, GPA, statistics and equation calculators.
Scientific Calculator
Trig, logs, powers, roots and brackets — with history.Fraction Calculator
Add, subtract, multiply and divide fractions with steps shown.GPA Calculator
Term and cumulative GPA on the 4.0 scale, weighted or unweighted.Grade Calculator
What you need on the final — or your weighted grade so far.Average Calculator
Mean, median, mode, range and sum of a list of numbers.Standard Deviation Calculator
Sample and population standard deviation with the steps shown.Random Number Generator
Random numbers in any range — unique, sorted or decimal.Ratio Calculator
Solve proportions, simplify ratios or split a total.Exponent Calculator
Powers and nth roots, with full digits and scientific notation.LCM and GCF Calculator
Least common multiple and greatest common factor of any numbers.Quadratic Equation Solver
Real or complex roots of ax² + bx + c = 0, with steps.Scientific Notation Converter
Numbers to scientific, E and engineering notation — and back.Significant Figures Calculator
Count sig figs in a number and round to any number of them.Roman Numeral Converter
Numbers to Roman numerals and back, from 1 to 3,999.Number Base Converter
Binary, octal, decimal, hex and any base from 2 to 36.
Everyday Calculators
Age, percentage and discount calculators with steps shown.
Converters
Units, currency, shoe and clothing sizes, and number to words.
Number to Words
Write amounts in words with lakh and crore, ready for cheques.Land Area Converter
Bigha, katha, chatak, decimal, acre, sq ft and more (West Bengal).Unit Converter
Length, weight, temperature, area, volume, speed and data units.Fuel Economy Converter
MPG (US and UK), L/100 km and km/L — plus yearly fuel cost.Shoe Size Converter
US, UK and EU shoe sizes for women, men and kids.Clothing Size Converter
Women’s and men’s clothing sizes across US, UK, EU and more.Cooking Converter
Cups to grams by ingredient, spoons, ml, fl oz and pints.CM to Inches
Centimetres to inches (and back), with feet and inches.KG to LBS
Kilograms to pounds (and back), plus stones and ounces.Fahrenheit to Celsius
°F to °C (and back), with Kelvin and oven temperatures.Miles to KM
Miles to kilometres (and back), with mph to km/h.Feet to Meters
Feet to metres (and back), with feet and inches.Paper Size Chart
A4, Letter and every common paper size in mm, inches and pixels.Currency Converter
Convert major currencies with the ECB’s daily reference rates.
Text Tools
Count, compare, clean up and transform text in any language.
Word Counter
Words, characters, sentences and reading time — Hindi and Bangla too.Case Converter
Switch text between upper, lower, title, sentence and code cases.Character Counter
Characters, words and SMS parts — with limits for popular platforms.Fancy Text Generator
Copy-and-paste bold, italic, script and other fancy text styles.Lorem Ipsum Generator
Placeholder text by paragraphs, sentences or words.Text Compare
Highlight the differences between two texts, by word or by line.Remove Duplicate Lines
Delete repeated lines from any list, with case and space options.Sort Lines
Alphabetize, sort by number or length, reverse or shuffle lines.Find and Replace
Replace words in text, with case, whole-word and regex options.Text to Speech
Read any text aloud with your device’s voices, speed and pitch.Readability Checker
Flesch score, grade level and other readability tests for your text.Remove Extra Spaces
Fix double spaces, tabs, blank lines and broken line breaks.Reverse Text
Write text backwards — by letters, words, each word or lines.Slug Generator
Turn titles into clean, lowercase URL slugs with no accents.
Generators
QR codes, barcodes, passwords, invoices, resumes and more.
QR Code Generator
QR codes for UPI payments, links, Wi-Fi and contact cards.Password Generator
Strong random passwords made on your device, with a strength meter.Barcode Generator
Make Code 128, EAN, UPC and other barcodes as PNG or SVG.Spin the Wheel
Spin a wheel to pick a random name, winner or choice.Email Signature Generator
A clean, professional signature for Gmail, Outlook and Apple Mail.Resume Builder
Write a clean resume or CV and download it as a PDF.Invoice Generator
Make PDF invoices with tax, discounts and any currency.
Date & Time Tools
Date differences, time zones, timers, week numbers and timestamps.
Time Zone Converter
Convert a time between zones, with daylight saving handled for you.Date Difference Calculator
Days between two dates, or a date plus or minus any time.Business Days Calculator
Working days between dates, or a deadline N business days away.Hours Calculator
Hours worked from start and end times, or a whole timesheet.Countdown Timer
Count down to any date, or run a timer with an alarm.Stopwatch
Accurate stopwatch with laps and keyboard shortcuts.Week Number Calculator
ISO and US week numbers, and the dates of any week.Unix Timestamp Converter
Epoch seconds or milliseconds to a date, and back.Day of the Week Calculator
The weekday of any date — past or future.
Developer Tools
JSON, Base64, JWT, regex, hashes, colours and format converters.
JSON Formatter
Pretty-print, validate and minify JSON with clear error positions.Base64 Encoder / Decoder
Encode and decode Base64 and Base64URL with UTF-8 support.URL Encoder / Decoder
Percent-encode or decode URLs, with a query-parameter table.JWT Decoder
Read a JWT’s header, payload and expiry — privately.Regex Tester
Test regex live: matches, groups, flags and replace.Color Converter
HEX, RGB, HSL, HSV and CMYK, with a WCAG contrast check.Hash Generator
MD5 and SHA hashes of any text, computed in your browser.UUID Generator
Generate v4 or v7 UUIDs in bulk with secure randomness.CSV to JSON Converter
CSV ↔ JSON with delimiter detection and quoted fields.YAML to JSON Converter
YAML ↔ JSON for config files, with clear errors.Markdown to HTML
Markdown to HTML with tables and a safe live preview.Cron Expression Explainer
Cron schedules explained in plain English, with next run times.HTML Entity Encoder
Escape and unescape HTML entities like & and é.
Why use DayUtils?
Private by design
Photos, PDFs and the numbers you type are processed inside your browser. Nothing is uploaded to a server, so nothing can leak.
Free, no sign-up
No account, no watermark and no daily limits. Open a tool and get your result in seconds.
Fast on any phone
Light pages that load quickly even on a slow mobile connection. Each tool loads only the code it needs.