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LengthConvertersConvert common metric and imperial lengths from millimeters through miles.HeightConvertersConvert height between millimeters, centimeters, meters, feet, and inches.Weight & MassConvertersConvert weight between milligrams, grams, kilograms, ounces, pounds, and stone.TemperatureConvertersConvert temperatures accurately between Celsius, Fahrenheit, and Kelvin.AreaConvertersConvert surface area between metric, imperial, hectare, and acre measurements.VolumeConvertersConvert liquid and solid volume between liters, gallons, pints, and cubic units.SpeedConvertersConvert speed between kilometers per hour, miles per hour, knots, and more.Data StorageConvertersConvert storage sizes between decimal bytes and binary KiB, MiB, GiB, and TiB.cm to inchesConvertersConvert cm to inches instantly. 1 cm = 0.3937 in (exact inch = 2.54 cm). Free online cm to inches converter with chart. No sign-up.inches to cmConvertersConvert inches to cm instantly. 1 inch = 2.54 cm exactly. Free inches to cm converter with chart for common sizes. No sign-up.feet to metersConvertersConvert feet to meters instantly. 1 foot = 0.3048 m exactly. Free feet to meters converter with chart. No sign-up.meters to feetConvertersConvert meters to feet instantly. 1 m = 3.28084 ft (1 foot = 0.3048 m exactly). Free meters to feet converter with chart. No sign-up.miles to kmConvertersConvert miles to km instantly. 1 mile = 1.609344 km exactly. Free miles to kilometers converter with chart. No sign-up.km to milesConvertersConvert km to miles instantly. 1 km = 0.621371 mi. Free kilometers to miles converter with chart. No sign-up.yards to metersConvertersConvert yards to meters instantly. 1 yard = 0.9144 m exactly. Free yards to meters converter with chart. No sign-up.inches to feetConvertersConvert inches to feet instantly. 1 foot = 12 inches exactly. Free inches to feet converter with chart. No sign-up.mm to inchesConvertersConvert mm to inches instantly. 1 mm = 0.03937 in (1 inch = 25.4 mm). Free mm to inches converter with chart. No sign-up.kg to lbsConvertersConvert kg to lbs instantly. 1 kg = 2.20462262 lb. Free kg to lbs converter with body-weight chart. No sign-up.lbs to kgConvertersConvert lbs to kg instantly. Free pounds to kilograms converter with chart for common body weights. No sign-up.grams to ouncesConvertersConvert grams to ounces instantly. 1 oz = 28.349523125 g. Free grams to ounces converter with chart. No sign-up.ounces to gramsConvertersConvert ounces to grams instantly. 1 oz = 28.349523125 g exactly. Free ounces to grams converter with chart. No sign-up.stone to lbsConvertersConvert stone to pounds instantly. 1 stone = 14 lb exactly. Free stone to lbs converter with body-weight chart. No sign-up.celsius to fahrenheitConvertersConvert Celsius to Fahrenheit instantly. °F = (°C × 9/5) + 32. Free converter with weather and body-temp chart.fahrenheit to celsiusConvertersConvert Fahrenheit to Celsius instantly. °C = (°F - 32) × 5/9. Free converter with weather and body-temp chart.Age CalculatorCalculatorsFind calendar age in years, months, and days, plus elapsed weeks, days, and the next birthday.Percentage CalculatorCalculatorsSolve percent-of, reverse-percentage, and percentage-change questions in three independent modes.Tip CalculatorCalculatorsCalculate a tip, bill total, and equal per-person share using any tip percentage.Discount CalculatorCalculatorsFind the amount saved, sale price, optional tax, and final checkout estimate.Date-Difference CalculatorCalculatorsMeasure a calendar interval in completed years, months, and days, with elapsed days and weeks.Days Between Dates CalculatorCalculatorsCount exact elapsed days, whole weeks, weekdays, or days remaining until a target date.EMI CalculatorCalculatorsEstimate a fixed monthly installment, total interest, total repayment, and yearly loan balances.Loan CalculatorCalculatorsAnalyze a fixed-rate loan payment, total borrowing cost, and first payment principal/interest split.Mortgage CalculatorCalculatorsEstimate mortgage principal and interest plus optional property tax, insurance, and PMI.Paycheck CalculatorCalculatorsEstimate 2026 US take-home pay from salary or hourly earnings, deductions, federal tax, FICA, and state tax.BMI CalculatorCalculatorsEstimate adult body mass index with metric or imperial measurements and view the general CDC category.GPA CalculatorCalculatorsCalculate a credit-weighted GPA by adding courses, credit hours, and letter grades on a 4.0 scale.Image CompressorImage ToolsReduce JPEG, PNG, or WebP file size with format and quality controls, batch results, and accurate size comparisons.Image ResizerImage ToolsResize one image to exact pixel dimensions while choosing the crop area and preserving the ratio when needed.Image CropperImage ToolsRemove unwanted edges from one image with a freeform frame and pixel width, height, and position.Background RemoverImage ToolsRemove an image background locally with AI, then export transparency or a clean studio-color backdrop as PNG.Image ConverterImage ToolsBatch convert between JPEG, PNG, and WebP while controlling lossy output quality.HEIC to JPG ConverterImage ToolsCreate a compatible JPG copy from an HEIC or HEIF photo while understanding re-encoding and metadata changes.PNG to JPG ConverterImage ToolsCreate a JPG compatibility or sharing copy and check whether the measured output is actually smaller.JPG to PNG ConverterImage ToolsCreate a lossless working copy for PNG-only or multi-save workflows while keeping realistic quality expectations.WebP to JPG ConverterImage ToolsCreate a JPG for older software or upload systems without silently dropping animated WebP frames.JPG to WebP ConverterImage ToolsPrepare a WebP web-delivery copy while keeping the broadly compatible JPG original.Image-to-PDFImage ToolsCombine JPEG, PNG, and WebP files into one PDF with fit-to-image, A4, or Letter pages.PDF MergerPDF ToolsCombine several PDFs in a chosen file order while preserving each source page size.PDF SplitterPDF ToolsExtract a page range into one PDF or package every page as a separate PDF in a ZIP.Reorder PDF PagesPDF ToolsMove pages up or down with keyboard-friendly controls, then save a new page sequence.Rotate PDF PagesPDF ToolsSelect page thumbnails and rotate them left or right in 90-degree steps without resizing them.PDF CompressorPDF ToolsRasterize pages at a chosen DPI and JPEG quality to try to reduce image-heavy PDFs.Edit PDFPDF ToolsAdd and visually replace text, place images, highlight, draw, and add shapes before downloading an edited PDF.PDF to Image ConverterPDF ToolsRender every PDF page as PNG or JPEG and download the page images in one ZIP.DOCX to PDFPDF ToolsRender a DOCX document in the browser and download a rasterized PDF after reviewing the page preview.Word CounterText & Developer ToolsCount words, characters, sentences, and paragraphs, and estimate reading time.Case ConverterText & Developer ToolsConvert text between uppercase, lowercase, title, sentence, camel, Pascal, snake, and kebab case.JSON FormatterText & Developer ToolsFormat, minify, and validate JSON with clear parse-error messages.Base64 Encoder/DecoderText & Developer ToolsEncode text to Base64 or decode Base64 back to text, with full UTF-8 support.URL Encoder/DecoderText & Developer ToolsPercent-encode text for safe use in URLs or decode an encoded URL component.Duplicate-Line RemoverText & Developer ToolsRemove duplicate lines from text, with options to trim whitespace, ignore case, and sort.Text-Difference CheckerText & Developer ToolsCompare two texts line by line and highlight added and removed lines.QR Code GeneratorText & Developer ToolsTurn text or a URL into a QR code and download it as a PNG or SVG.QR Code ScannerText & Developer ToolsDecode a QR code from an uploaded image or your device camera.Password GeneratorText & Developer ToolsGenerate strong random passwords with your choice of length and character types.Unix Timestamp ConverterText & Developer ToolsConvert Unix timestamps to human-readable dates and back, in local time and UTC.Color ConverterText & Developer ToolsConvert colors between HEX, RGB, and HSL with a live preview.