🧰 Every Tool

ℹ️ What this tool does & how it works

The whole toolbox — 1136 tools, sixty to a page. Browse it in order, or use the box to jump straight to the one you came for; the shelves under Everyday Tools group the same list by subject.

1136 match · 60 listed below · page 1 of 19

📐Unit ConverterLength, weight, volume, area, speed, temperature, time and digital storage — exact factors, every unit at once, nothing uploaded. 📅Date & Age CalculatorDays between any two dates, add or subtract days, exact age in years-months-days, working days and days to your next birthday. 🎨Colour & Contrast CheckerWCAG contrast ratio between any two colours with AA/AAA verdicts, the nearest accessible colour, and tints & shades palettes. 🔐Password GeneratorTrue random passwords from your browser’s cryptographic generator, with honest entropy maths — the password never touches our server. ✂️Text ToolkitWord counter, case converters (camelCase, snake_case, kebab…), URL & Base64 encoders and SHA-256 hashing — all offline, all instant. ❤️BMI & Calorie CalculatorBMI with WHO bands, your healthy weight range for height, BMR and daily calorie needs (Mifflin-St Jeor) plus body-fat and waist-to-height estimates. 🖼️Image CompressorShrink a photo or screenshot right in your browser — resize, pick quality, compare before/after and download. Your file never uploads anywhere. 📖Dictionary & TranslatorLook up any word’s meaning and translate it across dozens of human languages — plus ancient scripts and playful animal, alien and sound “languages”, with spoken pronunciation. 🧮Percentage CalculatorWhat is X% of Y, X is what percent of Y, percent change and add-or-subtract a percentage — with the arithmetic printed beside every answer. 🏦Loan & Interest CalculatorMonthly loan payments, total interest, the effect of extra payments, and compound savings growth — the maths printed honestly, no quote requested. 🔳QR Code GeneratorTurn a link, text or Wi-Fi network into a QR code in your own browser, with error-correction controls and a print-ready PNG download. 📍What Is My IP?Your public address, the ISP-level location databases infer from it, and every browser field a website can read — shown openly, nothing stored. ⏱Unix Timestamp ConverterEpoch to date and back, with seconds/millisecond auto-detection, ISO 8601, your local zone and a live ticking clock. 🎲Random Numbers & DiceUnbiased integers, d4–d100 dice and a raffle-style list picker — drawn from crypto.getRandomValues with rejection sampling, so nothing is favoured. 📄PDF ToolsMerge, extract, delete, rotate and split PDF pages without uploading the file — the document is opened and re-saved by your own browser. 🧩JSON FormatterFormat, minify and validate JSON with the exact line and column of a syntax error; large numbers and key order survive because it scans instead of re-parsing. 🔑Checksum & HashMD5, SHA-1, SHA-256, SHA-384 and SHA-512 of text or a whole file at once — verify a download against its published checksum privately. 🔁Base64 EncoderUTF-8-correct Base64 both ways, URL-safe output, and a file turned into a data: URL — with the honest note that encoding is not encryption. 🌍Time Zone PlannerCompare up to eight cities hour by hour and find the call time that works for everyone — real IANA offsets and daylight saving, computed in the browser. 🆔UUID GeneratorRandom v4 and time-ordered v7 identifiers in bulk, plus a decoder that shows the version, variant and any embedded timestamp. ⏰Cron ExplainerAny five-field cron schedule in plain English with its next ten runs, every field validated — including the day-of-month/day-of-week OR trap. 🔍Regex TesterTest JavaScript regular expressions with live match highlighting, group inspection, and a common-pattern library (email, URL, IPv4, dates). 📊CSV ViewerPaste CSV or TSV and see it as a formatted table instantly. Convert to JSON, copy or download — RFC 4180 compliant, all local. 🔀Text DiffCompare two blocks of text line-by-line or word-by-word: additions, deletions and unchanged parts highlighted instantly. 🔗URL ParserBreak a URL into protocol, host, port, path, query parameters and fragment. Encode and decode components side-by-side. 🔣Character ReferenceInspect any character: Unicode code point, HTML entity, UTF-8 bytes and UTF-16 unit count — a quick-reference for invisible bugs. 🧭Compass & BearingA live on-screen compass from your device’s magnetometer, plus the true-north bearing and great-circle distance to 46 world cities (a qibla pointer, the way home, the next town). 🔄Image ConverterConvert between PNG, JPEG, WebP, BMP and ICO, and rasterise an SVG — resize, pick a quality, keep or replace transparency, download. The file never leaves your browser. 🖼️Images to PDFPut photos, scans or screenshots into one PDF — A4, US Letter or a page sized to each image — without uploading. JPEG and PNG files are embedded byte-for-byte, untouched. 🔢Base ConverterAny whole number in base 2, 8, 10, 16 — or any base from 2 to 36 — computed exactly with BigInt, even numbers a desktop calculator overflows. 🧬Text ↔ BinaryText to UTF-8 bytes as 01101001 and back again, in binary, hex, octal or decimal — the honest way to see what a string really is. 🧷Prime Checker & FactoriserIs it prime? A deterministic Miller–Rabin answer for numbers up to 2⁶³, plus the full prime factorisation when it is not. 🍕Fraction CalculatorFractions that show their working: exact + − × ÷ with lowest terms by the Euclidean algorithm and the mixed-number form. 📈Statistics CalculatorThe full descriptive summary of any list of numbers — mean to quartiles — with the sample-vs-population choice made visible, not hidden. 💼Salary ConverterHourly to annual and back with your real schedule (hours per week, weeks per year), plus the 1.5× overtime figure — gross maths, no tax claims. 🍽️Tip & Bill SplitThe restaurant napkin maths: tip, total and each person's share, with a round-up option so the payment is exact down to the coin. 🏷️Discount CalculatorSale price from any percent off, a second coupon applied honestly on the remainder — and the equivalent single discount exposed. ⏳Countdown TimerA live seconds-accurate countdown to any date — exams, flights, launches, birthdays — that keeps counting up after it passes. 🎓Grade CalculatorWhat you need on the final for the grade you want — or a straight "it is mathematically impossible" with the best achievable score. 🔣HTML EntitiesEncode text so it survives an HTML parser and decode entity soup back, using the browser's own decoding table — nothing sent anywhere. 🎫JWT DecoderRead any JWT's header and claims with expiry dates made human — and an honest refusal to pretend an unsigned token is verified. 🏛️Roman NumeralsNumbers to Roman and back with the real canonical rules — the page tells you IIII is a clock, not a document. 🔤Number to WordsAny number spelled out — including the cheque form banks actually ask for — exact up to 24 digits because it runs on integers, not floats. ⏲️Duration ConverterA raw span of seconds read the way people say it — 2d 8h 16m 40s — and back, refusing to pretend a month has a fixed length. 🧾Check Digit ValidatorDoes this card/IBAN/ISBN/barcode pass its own check digit? The published algorithm, the working printed, and the honest limit: validity is not ownership. 🛒Unit Price ComparisonThe 500 g vs 1 kg decision settled by price per unit, with the percentage gap and what the other pack would cost at the winner’s rate. ⛽Fuel Economy CalculatorThe pump-and-odometer maths both traditions ask for — L/100 km and km/L and US MPG — plus what the trip actually cost. 😴Sleep-Cycle CalculatorThe napkin maths of sleep: count back in 90-minute cycles from your alarm and see which bedtimes wake you mid-cycle-free. 📝Lorem Ipsum GeneratorProper placeholder text — scrambled from the real De Finibus word bank, variable sentence lengths, no “asdfgh” filler. 📐Aspect Ratio CalculatorTurn 1920×1080 into 16:9, check what a crop actually is, and resize to fit any box with the rounding error printed. 📏CSS Unit Converterpx to rem to pt with your real root font size, and an honest note about the one unit (em) that depends on context this page cannot see. 🎲Dice ProbabilityThe true 2d6 curve computed as exact counts — 21 of 36 outcomes are 7 or better — with the full distribution as a table. ⏬Download Time CalculatorThe two-minute question answered twice: theoretical minimum and the 85%-of-line-rate figure ISPs actually let you have. 🧮Combination CalculatorC(52,5) = 2,598,960 poker hands as an exact integer — combinations, permutations and factorials with no float ever touching the maths. ➗GCD & LCM Calculatorgcd(1071,462) = 21 with each Euclidean division printed as it happens — plus the LCM, the coprime verdict and the reduced fraction. 🔺Triangle SolverThree sides in, three angles, area and perimeter out — with the triangle inequality and the right/obtuse verdict stated honestly. 📖Readability CheckerFlesch Reading Ease and Kincaid grade for any English text, with the syllable maths and a 230-wpm reading time — computed on your device. 🔥Calorie & TDEE CalculatorBMR and daily calorie needs via Mifflin-St Jeor — the formula dietitians actually validate against — with weight-change rows instead of promises. 💹Inflation CalculatorPrices forward and values backward by compound maths — with the exact doubling year count next to the rule-of-72 shortcut. 🗝️Caesar & Vigenère CipherThe ciphers history actually used — Caesar, ROT13, Atbash, Vigenère — encoded and decoded with the shift maths printed and no false security claims.

Shelves instead of a wall

City-to-city Distances, Coordinates & Position, Antipodes, Numbers & Maths, Money, Rates & Shopping, Health, Body & Fitness, Date & Time, Developer & Data Tools, Text, Words & Writing, Study & Learning, Colour, Images & Files, Everyday Tools. Every tool on tukuk.org belongs to exactly one of them, and each shelf lists its tools sixty at a time — the same links the hub would have carried all at once, in pieces a person can actually read.