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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
- 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
- Bed & Pillow Size ComparisonFind the closest standard size name
- 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
- 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
- Color Blindness SimulatorPreview a color under common deficiencies
- Color Picker / ConverterHEX, RGB, HSL
- Combinations & Permutations CalculatornCr and nPr, with the working shown
- Contrast CheckerWCAG AA/AAA color contrast
- Cooking Measurement ConverterBy ingredient, not a flat rate
- 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
- Decibel CalculatorConvert dB to/from power or amplitude ratios
- 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
- Emoji Picker / SearchFind and copy any emoji
- Fake / Placeholder Data GeneratorNames, emails, addresses for testing
- 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
- 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
- Line SorterA–Z, Z–A, length, numeric, shuffle
- Lorem Ipsum GeneratorPlaceholder text, by word/sentence/paragraph
- Markdown PreviewerLive-rendered Markdown
- 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
- Morse Code ConverterText to and from Morse
- 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
- 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
- Pizza Topping Combinations25 classic combos with ingredients and notes
- Prime Number CheckerCheck primality, see factorization
- QR Code GeneratorText or URL, downloadable
- QR Code ScannerDecode from an image or your 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
- Regex TesterLive match highlighting
- Reverse PercentageFind the original before a % was applied
- Ring Size ConverterUS, UK, EU, and diameter
- Roman Numeral ConverterTo and from Roman numerals
- Sales Tax CalculatorAdd or remove tax from a price
- 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
- Syllable CounterEstimate syllables per word
- 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
- Unit ConverterLength, weight, temperature, speed, data, area
- 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 Bass GuitarA playable 4-string fretboard, an octave down from guitar
- 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
- Week Number CalculatorISO week number for any date
- 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
- Word & Character CounterLive stats, reading time
- Word Frequency CounterMost common words in a text
- Workout GeneratorRandomized workouts, simple or advanced
- World Clock / Time Zone ConverterCompare times across cities
- XML FormatterPretty-print and validate XML
- YAML ↔ JSON ConverterConvert between formats
Why use these instead of a search snippet
Most quick answers arrive wrapped in ads, autoplay video, or a dozen paragraphs before the actual tool. These are built to do one job, load fast, and get out of your way.