All 63 free online tools
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Showing 63 tools
Date & TimeAge CalculatorExact age in years, months and days, plus next birthday countdown.Date & TimeDate Difference CalculatorDays between two dates, working days, and add or subtract days from a date.Date & TimeTime Zone ConverterConvert a time between US, UK, India (IST), Europe, Australia and more.TextWord CounterCount words, characters, sentences and paragraphs, plus reading time and keyword density.TextCase ConverterUPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and more.TextText RepeaterRepeat any text or emoji up to 10,000 times, with new line, space or custom separator.TextRemove Duplicate LinesDelete repeated lines from a list, with options to sort, trim and ignore case.TextSlug GeneratorTurn titles into clean, SEO-friendly URL slugs.TextLorem Ipsum GeneratorPlaceholder text in paragraphs, sentences or words, with optional HTML tags.DeveloperJSON Formatter & ValidatorBeautify, validate, minify and sort JSON, with the exact error line.DeveloperBase64 Encoder / DecoderEncode or decode Base64 text (UTF-8 safe) and convert files to Base64 data URIs.DeveloperURL Encoder / DecoderPercent-encode or decode URLs and query strings, and inspect URL parameters.DeveloperPassword GeneratorStrong random passwords and passphrases with a strength meter.DeveloperUUID GeneratorRandom UUID v4 (GUID) in bulk, uppercase or without hyphens.DeveloperColor Converter & PickerConvert HEX, RGB and HSL, pick colours and check contrast for accessibility.DeveloperUnix Timestamp ConverterEpoch time to date and date to epoch, in seconds or milliseconds.EducationGPA CalculatorSemester and cumulative GPA from letter grades and credits, weighted or unweighted.EducationFinal Grade CalculatorWhat you need on your final exam to get the grade you want.EducationCGPA to Percentage ConverterConvert CGPA to percentage: CBSE (ร9.5), 10-point university, VTU and 4.0 scale.EducationPercentage to CGPA ConverterConvert percentage to CGPA (CBSE รท 9.5) or to a 4.0 GPA estimate.EducationMarks Percentage CalculatorPercentage and grade from obtained marks, for one exam or many subjects (CBSE grades).EducationNegative Marking CalculatorMCQ score with JEE/NEET +4/โ1, 1/4, 1/3 or custom negative marking.EducationTime Table MakerMake a printable class schedule or study timetable. Saves in your browser.FinanceUS Income Tax Calculator 2026Federal income tax, Social Security and Medicare on your salary, with take-home pay.FinanceUK Take-Home Pay Calculator 2026/27Income Tax and National Insurance on your salary, with monthly and weekly take-home pay.FinanceIncome Tax Calculator India FY 2026-27New vs old tax regime side by side, with 87A rebate, cess and which regime saves more.FinanceMortgage CalculatorMonthly mortgage payment with taxes, insurance, PMI and an amortization schedule.FinanceStamp Duty Calculator (England & NI)SDLT for home movers, first-time buyers, additional properties and non-UK residents.FinanceLoan EMI CalculatorMonthly payment (EMI), total interest and a repayment schedule for any loan.FinanceCompound Interest CalculatorSee how savings grow with compounding and monthly deposits, year by year.FinanceSIP CalculatorFuture value of a monthly SIP in mutual funds, with optional yearly step-up.FinanceFixed Deposit (FD / CD) CalculatorMaturity amount and interest on a fixed deposit or certificate of deposit.FinanceSimple Interest CalculatorInterest and total amount using I = P ร R ร T, in years, months or days.FinanceDiscount CalculatorSale price, money saved, double discounts and tax on the discounted price.FinanceProfit Margin CalculatorProfit, margin and markup from cost and price, or the price for a target margin.FinanceVAT & Sales Tax CalculatorAdd or remove VAT or sales tax from a price. UK 20% VAT and US state rates.FinanceGST Calculator IndiaAdd or remove GST at 5%, 18% or 40%, with CGST, SGST and IGST split.FinanceTip CalculatorTip amount and total, split between people, with rounding.FinanceZakat CalculatorZakat at 2.5% on cash, gold, silver and investments, with the nisab check.HealthBMI CalculatorBody mass index with WHO and Asian categories, plus your healthy weight range.HealthCalorie CalculatorDaily calories to maintain, lose or gain weight, based on Mifflin-St Jeor.HealthBMR CalculatorBasal metabolic rate: calories your body burns at rest.HealthIdeal Weight CalculatorIdeal body weight for your height by Devine, Robinson, Miller, Hamwi and BMI range.HealthBody Fat CalculatorBody fat percentage with the US Navy tape method, plus fat and lean mass.HealthWater Intake CalculatorHow much water to drink a day based on weight, activity and hot weather.HealthPregnancy Due Date CalculatorEstimated due date, current week and trimester from your last period or conception.ImageImage Resizer & CompressorResize and compress JPG, PNG and WebP images in bulk, to exact pixels or a target KB.ImageImage Converter (JPG, PNG, WebP)Convert images between JPG, PNG and WebP in bulk, in your browser.ImageImage to PDF ConverterCombine JPG and PNG images into one PDF, in order, with A4 or fit-to-image pages.ImageQR Code GeneratorQR codes for links, text, WiFi, WhatsApp, phone and email. Download PNG or SVG.SEO & YouTubeYouTube Thumbnail DownloaderDownload any YouTube video or Shorts thumbnail in HD, Full HD and every size.SEO & YouTubeMeta Tag Generator & SERP PreviewWrite SEO title and description with live Google preview, plus Open Graph and Twitter tags.SEO & YouTubeKeyword Density CheckerTop 1, 2 and 3-word phrases with counts and density, plus a target keyword check.SEO & YouTubeRobots.txt GeneratorBuild a robots.txt file with sitemap, blocked folders and optional AI crawler blocking.ConvertersUnit ConverterLength, weight, temperature, area, volume, speed, data and time. Metric and imperial.MathPercentage CalculatorX% of Y, X is what % of Y, % increase or decrease, and reverse percentage.MathScientific CalculatorOnline scientific calculator with trig, logs, powers, plus quadratic, GCD/LCM and prime tools.MathFraction CalculatorAdd, subtract, multiply and divide fractions and mixed numbers, simplified.MathArea CalculatorArea of rectangles, circles, triangles, trapezoids and more, in sq ft, sq m and acres.MathAverage CalculatorMean, median, mode, range, sum and standard deviation of a list of numbers.MathRandom Number GeneratorRandom numbers in a range, with or without repeats. Great for draws and games.MathRoman Numeral ConverterConvert numbers to Roman numerals and back (1 to 3,999,999).MathNumber to Words ConverterWrite amounts in words for cheques, in lakh/crore or million/billion style.