ToolPronto

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Fast, private, and 100% free tools—right in your browser.

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Percentage CalculatorAnswer common percentage questions with the formula shown.

Countdown TimerCount down live to a date and time, then share it.

Mortgage CalculatorEstimate a fixed-rate home payment with your down payment, tax, insurance, and HOA.

Unit ConverterConvert common measurements with instant, precise results.

Date CalculatorCount days or weekdays and add or subtract calendar time.

BMI CalculatorCalculate adult BMI and a healthy-weight range in metric or imperial units.

Word CounterCount words, characters, sentences, paragraphs, and reading time as you type.

Random Number GeneratorGenerate secure integers or decimals in a range, with optional uniqueness.

Online StopwatchTime an activity accurately with pause, resume, and lap splits.

TDEE CalculatorEstimate adult resting and maintenance calories with a transparent activity multiplier.

Time Zone PlannerCompare one date and time across several time zones.

QR Code MakerCreate a permanent static QR code and download SVG or PNG.

Loan CalculatorEstimate monthly payment, total repayment, and interest for a fixed-rate loan.

GPA CalculatorCalculate weighted and unweighted GPA with grades, credits, and course bonuses.

Compound Interest CalculatorProject a balance from principal, monthly contributions, rate, and compounding.

Typing TestMeasure typing speed and accuracy in a timed test.

Age CalculatorFind exact age in years, months, days, total days, and time to the next birthday.

Focus TimerRun an accurate Pomodoro-style focus session.

Scientific CalculatorEvaluate typed expressions with functions, precedence, and degree or radian mode.

Tip CalculatorCalculate a tip, split the bill, and make per-person rounding visible.

Text to SpeechListen to text with voices already available in your browser or device.

Password GeneratorCreate a strong random password with private browser cryptography.

Merge PDFPut PDF files in order and merge them privately on this device.

Upload ReadyMake an image fit upload size and format rules.

Pick & SplitPick a random winner or divide a list into teams.

CounterKeep one count or a reusable board of counters.

JSON Formatter & ValidatorFormat, minify, validate, and copy JSON privately in your browser.

Regex TesterTest a regular expression, matches, and replacements safely.

Base64 Encoder & DecoderEncode Unicode text or decode validated Base64 locally.

UUID GeneratorGenerate one or many cryptographic UUID v4 values.

Color CheckCheck WCAG contrast and build a usable palette.

Profile Photo CropperFrame a photo for social, messaging, creator, or work profiles.

Text CleanerCount, clean, sort, deduplicate, and change the case of text.

Discount calculatorSee the final price and savings after one or two sequential discounts, quantity and optional tax.

Fraction calculatorAdd, subtract, multiply or divide two fractions and see the exact simplified result.

Grade and final exam calculatorCalculate a weighted course grade or the score needed on the remaining final.

VAT and sales-tax calculatorAdd a user-supplied tax rate or extract tax already included in an amount.

Retirement savings calculatorExplore how savings, monthly contributions, time and an assumed return affect a future balance.

50/30/20 budget calculatorSplit take-home income into needs, wants and savings, or adjust the percentages to fit your plan.

Body-fat estimateEstimate adult body-fat percentage from tape measurements with the U.S. Navy circumference method.

Water-intake estimatorSee a broad daily fluid range based on weight, activity and an optional heat allowance.

Reference-weight calculatorCompare four published height-based adult reference formulas as a broad range.

BMR calculatorEstimate basal metabolic rate with the Mifflin–St Jeor equation and see kcal and kJ per day.

Macro calculatorTurn a calorie target into protein, carbohydrate and fat gram scenarios using the 4/4/9 method.

Pace calculatorCalculate pace, speed, distance or duration for running, walking and cycling.

Fuel-cost calculatorEstimate fuel, trip cost and per-person share from your own distance, efficiency and price.

Aspect-ratio calculatorSolve a missing pixel dimension or simplify image and video dimensions into a ratio.

Ratio calculatorSimplify a ratio, solve an equivalent proportion or split a total into ratio parts.

Sleep-time calculatorPlan possible bedtimes or wake times from configurable cycle and fall-asleep assumptions.

Business-day calculatorAdd, subtract or count working days with your own workweek and excluded dates.

Pregnancy due-date estimatorEstimate a due date and broad timeline from LMP, conception or a known due date.

Ovulation calculatorEstimate the next period, ovulation date and a broad fertile window from an average cycle.

Password Strength CheckerCheck a password locally and get practical improvement tips.

URL Encoder & DecoderEncode or decode URL components without changing or opening them.

Unix Timestamp ConverterConvert Unix seconds or milliseconds to readable local and UTC dates.

Hash Generator & CheckerCreate or compare SHA-256, SHA-384, and SHA-512 digests locally.

Text DiffCompare two texts by line, word, or character and see each change.

Markdown PreviewPreview headings, lists, quotes, and code without running embedded HTML.

JSON & CSV ConverterConvert flat tabular JSON and CSV locally with spreadsheet-safe output.

YAML to JSON ConverterConvert safe, bounded YAML mappings to formatted JSON locally.

XML Formatter & ValidatorCheck XML well-formedness and format it without resolving entities.

HTML Formatter & MinifierFormat or conservatively minify HTML while keeping markup inert.

CSS Formatter & MinifierFormat or conservatively minify CSS without applying it to the page.

Cron Expression ExplainerExplain five-field POSIX cron and list the next local or UTC runs.

Binary, Decimal & Hex ConverterConvert exact integers among binary, octal, decimal, and hexadecimal.

IPv4 Subnet CalculatorCalculate network, broadcast, mask, ranges, and host counts from CIDR.

JWT DecoderInspect JWT header and payload locally without pretending to verify the signature.

Image Metadata RemoverInspect and remove EXIF, XMP, comments, and other private image metadata locally.

Image Color PickerPick a pixel color and extract a useful palette from any local image.

Favicon GeneratorCrop one image and create the favicon and app-icon sizes a website needs.

Images to PDFOrder local images and turn them into one PDF without uploading them.

PDF Page OrganizerSelect, reorder, rotate, remove, or split pages from one local PDF.

Online NotepadWrite a plain-text note that saves only in this browser and works offline.

Online ChecklistCreate, reorder, and complete a checklist saved only on this device.

Online MetronomeRun a precise audible and visual tempo with beat emphasis.

Tap BPMTap a button or key to estimate a song or activity tempo.

Dice Roller and Coin FlipRoll common dice or flip coins with secure browser randomness.

Keyboard TesterCheck which keys and combinations the browser detects while test mode is active.

Microphone TesterSee whether a microphone is receiving sound without recording it.

Webcam TesterPreview a camera locally to confirm it works, without recording or uploading.

Screen and Viewport CheckerSee current viewport, screen, pixel ratio, orientation, and display preferences.

CSS Gradient GeneratorBuild linear or radial gradients visually and copy valid CSS.

CSS Box Shadow GeneratorTune layered shadows visually and copy the exact box-shadow CSS.

Lorem Ipsum GeneratorGenerate a chosen number of placeholder words, sentences, or paragraphs.

Slug GeneratorTurn a title into a clean ASCII or Unicode URL slug.

Barcode GeneratorCreate standards-correct Code 128, EAN-13, and UPC-A barcodes locally.

Signature MakerDraw with touch, pen, or mouse and download a transparent signature image.

Your work stays on this device

No account is needed. Files and the content you enter are processed in your browser, not sent to a ToolPronto server.

How ToolPronto works

Choose a tool, finish the job, and leave. Each page is designed to load quickly and explain its limits before you depend on the result.