toolcrate
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- 1-Rep Max CalculatorEpley and Brzycki formulas
- Acronym GeneratorBuild an acronym from a phrase
- Add / Subtract Days from a DateFind a date N days out
- Age CalculatorExact age and next birthday countdown
- Baby Age CalculatorAge in weeks and months, corrected age, milestones
- Social Media ID DecoderWhen a post or account was made, from its ID or link
- Email Header AnalyserTrace an email's route, sender IP and SPF/DKIM/DMARC
- Sun Position & Shadow CalculatorSun angle and shadows for any place and time; date a photo
- Google Dork BuilderAdvanced search queries with site:, filetype:, intitle: and more
- Username SearchA username's profile link on 100+ sites
- DNS & Email Security LookupDNS records plus SPF, DMARC and DKIM checks for a domain
- Document Metadata ViewerAuthor, software, dates and edit history in PDF and Office files
- Scientific CalculatorTrig, logs, powers, roots and factorials, with history
- Pregnancy Due Date CalculatorDue date, weeks pregnant, trimester and scan dates
- Sleep CalculatorWhen to sleep or wake to finish a sleep cycle
- JPG to PDFCombine images into one PDF, in any order
- PDF to JPGTurn PDF pages into JPG or PNG images
- Webcam TestCheck your camera, its resolution and frame rate
- Microphone TestLive level meter, waveform and playback
- Keyboard TesterCheck every key, rollover and double-typing
- Fuel Cost CalculatorPetrol or diesel cost of a journey, split by passengers
- Electricity Cost CalculatorWhat an appliance costs to run per hour, day and year
- Age in Days / Hours / MinutesYour exact age in smaller units
- Anagram Solver / FinderFind valid anagrams of a word
- ASCII Art GeneratorText-to-ASCII banner
- Barcode GeneratorCommon 1D barcode formats
- Base64 Encoder / DecoderText to and from Base64
- Beep Test21-level multi-stage fitness test
- Bed & Pillow Size ComparisonFind the closest standard size name
- Bill Split CalculatorUneven items, tax and tip split proportionally
- Binary ↔ Text ConverterConvert text to binary and back
- BMI CalculatorMetric/imperial, WHO ranges, educational
- Body Fat % CalculatorU.S. Navy method
- Box Shadow GeneratorLayered shadows with live preview
- Break-Even Point CalculatorFixed costs, margin, and units to profit
- BPM Tap TempoTap along to find a song's tempo
- Calorie / TDEE CalculatorMifflin-St Jeor equation
- Case ConverterUPPER, lower, Title, camelCase
- Chord & Interval CalculatorBuild chords from a root note
- Clothing Size ConverterUS, UK, EU sizing
- Coin FlipHeads or tails, with a running tally
- Colour Blindness SimulatorPreview a colour under common deficiencies
- Colour Picker / ConverterHEX, RGB, HSL
- Combinations & Permutations CalculatornCr and nPr, with the working shown
- Contrast CheckerWCAG AA/AAA colour contrast
- Cooking Measurement ConverterBy ingredient, not a flat rate
- Coordinate Converter & Distance CalculatorDMS ↔ decimal, plus distance and bearing between two points
- Cracked Screen PrankRealistic shattered-glass overlay
- Countdown TimerSet a timer, get notified
- Countdown to a Specific DateLive countdown to any moment
- Cron Expression ExplainerPlain-English schedule breakdown
- CSS Clamp() CalculatorFluid font-size and spacing values
- CSS Gradient GeneratorLinear and radial, with live preview
- CSS Minifier & BeautifierShrink or reformat CSS
- CSV ↔ JSON ConverterConvert between formats
- Day of the Week FinderWhat day any date fell on
- Days Between Two DatesExact day count between any two dates
- Debt Payoff CalculatorSnowball vs. avalanche, side by side
- Decibel CalculatorConvert dB to/from power or amplitude ratios
- Decision MatrixWeighted criteria scoring, with a how-close-was-it check
- Decision WheelSpin a wheel of your own options, with weights
- Dice RollerAny number and size of dice
- Diff CheckerCompare two blocks of text or code
- Discount CalculatorSale price and amount saved
- Duplicate Line RemoverClean up repeated lines
- Eisenhower MatrixSort tasks into Do, Schedule, Delegate and Drop
- Emergency Info (ICE) CardWallet card and lock-screen image with your medical details
- Emergency Kit CalculatorWater, food and a checklist for 72 hours or more
- Emoji Picker / SearchFind and copy any emoji
- Expected Value CalculatorCompare risky choices: average payoff, spread, chance of loss
- Fake Blue ScreenFull-screen fake Windows crash
- Fake / Placeholder Data GeneratorNames, emails, addresses for testing
- Fake Incoming CallFull-screen fake call with custom caller
- Fake Low BatteryFull-screen fake battery warning
- Fake Update ScreenA progress bar that never finishes
- File Size ConverterBytes to GB, binary vs. decimal
- Find & ReplaceWith optional regex
- Fraction SimplifierReduce to lowest terms
- Fraction ↔ Decimal ↔ PercentageConvert between all three
- GCD & LCM CalculatorGreatest common divisor, least common multiple
- GPA Calculator4.0 scale, add as many courses as needed
- Guitar / Instrument TunerMic-based pitch detection
- Hacker TyperMash the keyboard, stream fake hacking code
- Hash GeneratorMD5, SHA-1, SHA-256
- Heart Rate Zone CalculatorTraining zones from max HR
- HTML Entity Encoder / DecoderEscape or unescape HTML entities
- JSON DiffCompare two JSON blobs, line by line
- JSON Formatter & ValidatorPretty-print, minify, validate
- JWT DecoderHeader and payload, no signature check
- Leap Year CheckerCheck any year, see the rule applied
- Lightning Distance CalculatorHow far away the storm is, from flash to thunder
- Line SorterA–Z, Z–A, length, numeric, shuffle
- Loan / Mortgage CalculatorMonthly payment, total interest, payoff time
- Lorem Ipsum GeneratorPlaceholder text, by word/sentence/paragraph
- Markdown PreviewerLive GitHub-style Markdown preview
- Markup vs. MarginTwo different percentages, explained
- Mean, Median, Mode & Std. Dev.Full stats from a list of numbers
- Meta Tag / Open Graph GeneratorSEO and social preview tags
- MetronomeAdjustable tempo and time signature
- MIDI / Notation WriterPiano-roll melody editor, exports .mid
- Morse Code ConverterText to and from Morse
- My Location for Emergency CallsYour coordinates, plus code and grid reference to read out
- Note Frequency ReferenceHz for every note and octave
- Number Base ConverterBinary, octal, decimal, hex
- Number to Words ConverterSpell out any number
- Pace / Split CalculatorRunning pace and splits
- PaintBrush, shapes, fill, text, undo/redo & PNG export
- Pairwise RankerRank a list by picking the better of two
- Palindrome CheckerCheck any word or phrase
- Paper Size ReferenceA-series, US Letter/Legal, mm/inches
- Passphrase GeneratorMemorable word-based passphrases
- Password GeneratorLength, character sets, entropy indicator
- Percentage DifferenceCompare two values, no direction
- Percentage ErrorFor lab and experimental results
- Percentage Increase / DecreaseFind or apply a % change
- Percentage of a NumberWhat is X% of Y
- Photo Metadata (EXIF) Viewer & RemoverSee a photo's hidden camera/GPS data, or strip it out
- Image Format ConverterConvert an image between PNG, JPEG, WebP and AVIF
- Image Compressor & ResizerShrink an image's file size or dimensions
- Image to Base64 ConverterTurn an image into a data URI string
- File Hash CheckerMD5, SHA-1, SHA-256, SHA-512 for any uploaded file
- Image Watermark ToolStamp text onto an image, position and opacity controls
- Favicon GeneratorTurn an image into a full favicon set
- Image to .ico ConverterOne multi-resolution .ico file from any image
- Pizza Topping CombinationsClassic combos plus regional styles worldwide
- Pomodoro TimerFocus/break cycles with auto-advance
- Power Bank & Battery Runtime CalculatorPhone charges and hours of power in a blackout
- Power Cut Food Safety TimerHow long food in the fridge and freezer stays safe
- Prime Number CheckerCheck primality, see factorization
- Pros & Cons WeigherWeighted pros and cons, with a clear balance
- QR Code GeneratorText or URL, downloadable
- QR Code ScannerQR codes and barcodes from an image or camera
- Random Name / Team PickerDraw names or split into teams
- Random Number GeneratorAny range, with or without repeats
- Ratio SimplifierReduce any ratio to lowest terms
- Readability Score CheckerFlesch-Kincaid and similar scores
- Recipe ScalerScale ingredients by multiplier or target servings
- Regex TesterLive match highlighting
- Reverse PercentageFind the original before a % was applied
- Ring Size ConverterUS, UK, EU, and diameter
- Risk Matrix & Register5×5 likelihood × impact heatmap with mitigation
- Roman Numeral ConverterTo and from Roman numerals
- Sales Tax CalculatorAdd or remove tax from a price
- Savings Goal CalculatorMonthly contribution needed, or project growth
- Screen Resolution / Aspect Ratio CalculatorCompare resolutions and ratios
- Shoe Size ConverterUS, UK, EU, CM — by region and gender
- Simple & Compound InterestEducational, not financial advice
- Slug GeneratorURL-friendly slugs from any text
- StopwatchWith lap tracking
- IP Subnet / CIDR CalculatorNetwork, broadcast, and usable host range
- Sudoku SolverType a puzzle in, get the solution instantly
- Syllable CounterEstimate syllables per word
- Text PipelineChain text steps: sort, dedupe, replace, encode, hash
- Text RepeaterRepeat text N times
- Text ReverserReverse characters, words, or lines
- Text-to-Speech ReaderHave any text read aloud
- Time Card CalculatorWork hours, overtime, pay
- Time Duration CalculatorHours and minutes between two times
- Time Zone Difference CalculatorCompare two time zones
- Timestamp / Unix ConverterTimezone aware
- Tip CalculatorBill splitting included
- Torch & SOS SignalScreen light, phone torch and SOS in Morse
- Unit ConverterLength, weight, volume, temperature, speed, data, area
- Unit Price ComparatorWhich size or pack is actually cheaper
- URL Encoder / DecoderPercent-encode or decode text
- User Agent / Browser Info CheckerSee what your browser reports
- Username GeneratorRandom handles from word combos
- UUID GeneratorGenerate v4 UUIDs in bulk
- Virtual DrumsA playable drum kit — click, tap, or use your keyboard
- Virtual GuitarA playable fretboard — click or tap any fret on any string
- Virtual PianoPlay with keyboard, mouse, or touch
- Virtual ViolinA playable fingerboard with a sustained, bowed tone
- Virtual XylophoneA playable two-octave bar set — click, tap, or use your keyboard
- Water Intake CalculatorDaily target estimate
- Water Purification CalculatorBleach drops and boiling times to make water safe
- Week Number CalculatorISO week number for any date
- Weighted Grade CalculatorWeighted categories, plus what you need on what's left
- What Percent Is X of Y?Find the percentage share
- Noise GeneratorBackground noise for focus or sleep
- Whitespace / Extra Space RemoverTrim and collapse spacing
- Wi-Fi QR Code GeneratorScan-to-connect network codes
- Wind Chill & Heat Index CalculatorFeels-like temperature, frostbite and heat risk
- Word & Character CounterLive stats, reading time
- Word Frequency CounterMost common words in a text
- Workout GeneratorRandomised workouts, simple or advanced
- World Clock / Time Zone ConverterCompare times across cities
- XML FormatterPretty-print and validate XML
- YAML ↔ JSON ConverterConvert between formats
- SQL Formatter & BeautifierPretty-print or minify with syntax highlighting
- cURL ↔ Code ConverterConvert between cURL and fetch, Python, Node, PHP, Go
- Cron "Next Run" CalculatorSee the next run times for a cron expression
- HTTP Status Code ReferenceEvery status code, grouped by class, with causes
- .env / dotenv Parser & ValidatorParse, validate, and mask secrets in a .env file
- Markdown ↔ HTML ConverterConvert Markdown to HTML and back, side by side
- UUID ValidatorCheck format, version, and variant — single or bulk
- Unicode / Character InspectorPer-character code points, names, bytes, hidden chars
- Currency ConverterLive exchange rates with a comparison table
- Oven Temperature ConverterCelsius, Fahrenheit, and gas mark, with baking presets
- VAT / GST CalculatorAdd or remove tax using regional rate presets
- Screen Size / PPI CalculatorPixel density from resolution and diagonal size
- Quadratic Equation SolverReal or complex roots, graph, and full working
- Matrix CalculatorAdd, multiply, invert, and find determinants up to 6×6
- Matrix RainFalling green code screensaver
- Z-Score / Normal Distribution CalculatorConvert between z-scores, percentiles, and areas
- Merge PDFCombine PDF files and reorder pages, free with no signup
- Split PDFExtract pages or split a PDF into files, free with no signup
- Compress PDFReduce PDF file size and keep text selectable, free with no signup
- Redact PDFBlack out private details for good, not just cover them
- Organise PDF PagesRotate, delete and reorder pages, then save
- Add Page Numbers to PDF“Page 1 of 12” where you want it, skipping the cover
- Sign PDFDraw, type or upload your signature; add the date and ticks
- Fill PDF FormType into a PDF form’s boxes and download it filled in
- Password Strength CheckerHow long it would take to crack, and how to fix it
- Encrypt Text & FilesLock a message or file with a password (AES-256)
- Is This Link Safe?Spot scam links in texts and emails before you click
- Colour Palette GeneratorComplementary, analogous, triadic palettes with contrast checks
- Meme Text GeneratorBold captions on your image or a blank template
What is toolcrate?
toolcrate (toolcrate.cc) is a free website of more than 210 small online tools and over 50 browser games, made by Jonathan Camilleri. It has unit and currency converters; calculators for money, maths, dates and health; developer tools such as a JSON formatter and a regex tester; PDF, image and file tools; open-source intelligence (OSINT) tools such as an email header analyser, DNS lookup and username search; music tools; and games from chess and sudoku to gentle games for babies.
Every tool runs entirely in your browser: there's no signup, and what you type, paste or upload stays on your device. Most quick answers online arrive wrapped in pop-ups, autoplay video or paragraphs of filler before the tool itself; these are built to do one job, load fast and get out of your way. More about toolcrate.