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CalculatorsPercentageCalculate a percentage of any number instantly.OpenCalculatorsPercentage ChangeMeasure the percentage increase or decrease between values.OpenCalculatorsDiscountFind the final price and exactly how much you save.OpenCalculatorsAverageGet the mean, sum and count from a list of numbers.OpenCalculatorsFuel CostEstimate fuel used, trip price and passenger cost.OpenCalculatorsAspect RatioFind an aspect ratio and scale dimensions proportionally.OpenMoneyCurrency ConverterConvert currencies with a dated ECB reference-rate snapshot.OpenMoneyVAT CalculatorAdd VAT to a net price and see the tax amount.OpenMoneyMargin CalculatorCalculate profit, margin percentage and markup.OpenMoneyCompound InterestEstimate investment growth with compound interest.OpenConvertersTemperatureConvert Celsius, Fahrenheit and Kelvin accurately.°C · °F · KOpenConvertersLengthConvert metric and imperial length measurements.m · km · mi · yd · ft · inOpenConvertersData SizeConvert bytes, kilobytes, megabytes and gigabytes.B · kB/MB · KiB/MiBOpenConvertersWeight (Mass)Convert kilograms, pounds, ounces and other mass units.g · kg · lb · stOpenConvertersAreaConvert square metres, hectares, acres and square feet.m² · ha · ft² · acOpenConvertersVolumeConvert litres, gallons, cups and cubic metres.mL · L · US cup · gallonsOpenConvertersSpeedConvert km/h, mph, knots and metres per second.m/s · km/h · mph · knOpenDate & TimeDate DifferenceCount the exact days and weeks between two dates.UTC calendar datesOpenDate & TimeAdd / Subtract DaysMove a calendar date forward or backward by any number of days.OpenDate & TimeAge CalculatorCalculate age in complete years, months and days.OpenDate & TimeUnix TimestampConvert Unix seconds or milliseconds to a readable UTC date.OpenDate & TimeWorking DaysCount weekdays between two dates while excluding weekends.Mon-Fri · holiday presetsOpenTextWord CounterCount words, characters, sentences and reading time.LiveOpenTextCharacter CounterCount characters with or without spaces, words and lines.LiveOpenTextCase ConverterSwitch text between upper, lower, title and sentence case.LiveOpenTextRemove DuplicatesDeduplicate lists while preserving their original order.OpenTextSort LinesSort text lines alphabetically in ascending or descending order.OpenTextFind & ReplaceFind text and replace the first or every matching occurrence.LiveOpenTextSlug GeneratorTurn a title or phrase into a clean URL-friendly slug.LiveOpenImagesImage ResizeResize an image to exact pixel dimensions in your browser.OpenImagesImage CompressorReduce image file size locally with WebP compression.OpenImagesImage to WebPConvert JPG or PNG images to modern WebP files locally.OpenImagesWebP to PNG/JPGConvert WebP images to PNG or JPG entirely in your browser.OpenImagesImage CropCrop a precise rectangular region from an image locally.OpenGeneratorsQR GeneratorCreate a downloadable QR code from text or a URL locally.QR payloadOpenGeneratorsPassword GeneratorCreate strong passwords using cryptographically secure randomness.CryptographicOpenGeneratorsRandom NumberGenerate secure random integers inside a custom range.CryptographicOpenGeneratorsColor ConverterConvert a HEX color to matching RGB and HSL values.OpenDeveloperJSON FormatterFormat, minify and validate JSON without uploading it.OpenDeveloperBase64Encode or decode UTF-8 text locally in your browser.OpenPDFMerge PDFCombine multiple PDF files in your chosen order without uploading them.OpenPDFSplit and Extract PDFExtract selected PDF pages or split every page into a local ZIP archive.OpenPDFOrganize PDF PagesReorder, rotate and delete PDF pages in one local operation.OpenPDFImages to PDFTurn JPG, PNG and WebP images into one downloadable PDF document.OpenPDFPDF to ImagesRender PDF pages to PNG or JPG and download them together as ZIP.OpenPDFPDF MetadataInspect PDF document metadata and download a copy with metadata removed.OpenDeveloperJWT DecoderDecode JWT headers and payloads locally without implying signature verification.OpenDeveloperURL Parser and EncoderParse URL components or encode and decode URL text locally.OpenDeveloperUUID and ULIDGenerate UUID v4, UUID v7 or ULID identifiers using secure browser randomness.OpenDeveloperSHA HashCreate SHA-256, SHA-384 or SHA-512 hashes for text or local files.OpenDeveloperJSON and CSVConvert structured data between JSON and CSV without uploading it.OpenDeveloperJSON and YAMLConvert safely between JSON and YAML data in your browser.OpenDeveloperRegex TesterTest a regular expression and inspect complete matches, groups and positions.OpenDeveloperText and Code Diff ViewerCompare two text or code versions and inspect additions and removals.OpenDeveloperCron Expression ParserExplain a cron expression and preview its next scheduled run times.OpenDeveloperIP SubnetCalculate IPv4 network, broadcast address, mask and usable host range.OpenDeveloperNumber BaseConvert integers between binary, octal, decimal and hexadecimal.OpenDeveloperMarkdown Preview and SanitizerRender Markdown to sanitized HTML and inspect the safe output.OpenDeveloperText Workflow BuilderCompose, reorder and save local text and developer transformation recipes.OpenImagesBatch Image ResizeResize multiple images to shared maximum dimensions and download a ZIP.OpenImagesBatch Image CompressionCompress multiple images locally and download the results as ZIP.OpenImagesBatch ImageConvert batches between JPG, PNG, WebP and AVIF where the browser supports encoding.OpenImagesEXIF MetadataView image EXIF metadata and export a pixels-only copy with metadata removed.OpenImagesFavicon and App IconCreate common favicon and app-icon sizes from one source image.OpenImagesSocial Image ResizerResize an image for common social profile, post and cover formats.OpenImagesSVG Optimizer and PreviewSanitize, optimize and preview an SVG before downloading it.OpenImagesImage Color PickerPick colors from a local image and inspect HEX and RGB values.OpenMoneyLoanCalculate monthly repayments and a complete amortization schedule.OpenMoneyMortgage ScenarioCompare two mortgage rates and terms side by side.OpenMoneyROI, CAGR and Break-evenMeasure return, annual growth and break-even sales in one view.OpenMoneySalary to HourlyConvert annual salary to hourly, daily, weekly and monthly pay.OpenMoneyUnit Price ComparatorCompare two package prices and quantities to find the better value.OpenMoneyTip and Bill SplitterCalculate a tip and split the total bill between diners.OpenMoneyElectricity CostEstimate electricity consumption and cost from power and usage.OpenConvertersFuel EconomyConvert MPG US, MPG Imperial and litres per 100 kilometres.MPG US · MPG Imperial · L/100 kmOpenDate & TimeTime ZoneConvert a date and time between IANA time zones.IANA zones · DST-awareOpenDate & TimeTime DurationCalculate elapsed time between two date-time values with an optional break.OpenCalculatorsPaceCalculate running pace, speed and estimated finish time.OpenConvertersCooking VolumeConvert fixed cooking-volume units with clearly stated US cup assumptions.US cup · mL · tsp · tbspOpenTextWord Frequency AnalyzerCount and rank repeated words while optionally ignoring common stop words.OpenTextUnicode Inspector and NormalizerInspect Unicode code points and normalize text to NFC, NFD, NFKC or NFKD.OpenTextCSV Viewer and FilterView CSV data, filter rows and select visible columns locally.OpenTextAdvanced List CleanerTrim, deduplicate, sort and remove empty list items in one pass.Workflow-readyOpenGeneratorsWi-Fi QRCreate a QR code for a Wi-Fi network without sending credentials anywhere.QR credentialOpenGeneratorsvCard QRCreate a contact QR code from details entered locally.QR contactOpenGeneratorsUTM URL BuilderBuild a campaign URL with encoded UTM source, medium, campaign and optional tags.OpenGeneratorsSynthetic DataGenerate fictional names, emails and addresses that do not represent real people.Synthetic onlyOpenGeneratorsAPI Key and TokenGenerate secure random API keys, hexadecimal tokens or URL-safe secrets.CryptographicOpenGeneratorsLorem IpsumGenerate placeholder paragraphs, sentences or words locally.Placeholder contentOpen