ToolHub

ToolHub

137 free utilities — text, code, converters, calculators, generators, security and more. Everything runs 100% in your browser. Nothing is ever uploaded.

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✍️ Text · 27💻 Developer · 26🔄 Converters · 14🧮 Calculators · 26✨ Generators · 12🔐 Security · 8⏰ Time · 5🎨 Color & Design · 7🖼️ Files & Images · 6🧰 Everyday · 6
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Text

27
🔢Word Counter
Count words, characters, sentences and estimate reading time.
AaCase Converter
Convert between UPPER, lower, Title, camelCase, snake_case and more.
🔀Text Diff
Compare two texts and highlight added and removed lines.
📑Remove Duplicate Lines
Dedupe lines with optional trimming and case-insensitivity.
␣Whitespace Cleaner
Collapse spaces, trim lines, remove blank lines and line breaks.
↕️Sort Lines
Sort text lines alphabetically, by length, numerically or shuffle.
🔎Find & Replace
Search and replace text with regex and whole-word support.
📄Lorem Ipsum Generator
Generate placeholder paragraphs, sentences or words.
🔗URL Slug Generator
Turn any title into a clean, SEO-friendly URL slug.
🔁Text Reverser
Reverse characters, words, lines, or letters within words.
🌗Palindrome Checker
Check if a word or phrase reads the same backwards.
⏱️Reading Time
Estimate reading and speaking time for a piece of text.
💾Binary / Hex Converter
Convert text to binary, hex, octal or decimal bytes — and back.
📡Morse Code Translator
Translate text to Morse code and back, letters and digits.
🕵️Caesar / ROT13 Cipher
Shift letters by any amount, with a brute-force table.
🔐Vigenère Cipher
Classic polyalphabetic cipher encode/decode with a key.
🧷String Escaper
Escape/unescape for JSON, HTML, URLs, regex and CSV.
📊Word Frequency
Most common words in a text, with distribution chart.
📝Markdown Previewer
Live Markdown editor with rendered preview and HTML output.
🧹Text Cleaner
Strip invisible chars, smart quotes and unicode oddities.
📐Line Tools
Number, prefix, suffix, reverse, trim or squeeze lines.
🌐Unicode Inspector
Inspect code points, UTF-8 bytes and hidden characters.
😄Emoji Picker
Search 300+ emojis and click to copy.
🅰️ASCII Art Banner
Turn text into blocky ASCII art banners.
📻NATO Alphabet
Translate text to/from NATO phonetic code words.
🔢Numeronym Generator
Turn words into i18n-style abbreviations.
📋List Converter
Convert lists to JSON, SQL IN, quoted, bullets…
💻

Developer

26
{ }JSON Formatter
Beautify, minify, validate and sort JSON.
TSJSON → TypeScript
Generate TypeScript interfaces from JSON samples.
⇄CSV ⇄ JSON
Two-way converter with delimiters, headers and preview.
<>XML Formatter
Pretty-print or minify XML documents.
🗄️SQL Formatter
Uppercase keywords and structure SQL queries.
#CSS Formatter
Beautify or minify CSS stylesheets.
&HTML Entities
Encode/decode HTML entities, named and numeric.
🌐URL Encoder
Percent-encode/decode URLs and query components.
64Base64 Encoder
UTF-8-safe Base64 encode/decode with URL-safe mode.
🎫JWT Decoder
Decode JWT headers, payloads, expiry and claims.
.*Regex Tester
Test regular expressions with live match highlighting.
⏲️Cron Expression Parser
Explain cron schedules in plain English + next runs.
🚦HTTP Status Codes
Searchable reference of HTTP response codes.
🔤ASCII Table
Full ASCII table with decimal, hex, octal and binary.
🔓Chmod Calculator
Visually compute Unix file permissions (octal + symbolic).
🚫.gitignore Generator
Combine .gitignore templates for your stack.
🏷️Meta Tag Generator
Generate SEO, Open Graph and Twitter meta tags.
✂️URL Parser
Break a URL into protocol, host, path and query params.
🧭User-Agent Parser
Detect browser, engine, OS and device from a UA string.
⌨️Keyboard Key Info
Press any key to see key, code, keyCode and modifiers.
🖧IP Subnet Calculator
IPv4 CIDR calculator: mask, range, broadcast, hosts.
🔁XML → JSON
Convert XML documents to JSON, attributes included.
⚙️TOML ⇄ JSON
Convert Cargo/pyproject-style TOML to JSON and back.
📺Live HTML Editor
Sandboxed HTML playground with instant preview.
🔌Bitwise Calculator
AND, OR, XOR, NOT and shifts with bit views.
📷QR Code Reader
Decode QR codes from uploaded images or screenshots.
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Calculators

26
🧮Calculator
Standard calculator with keyboard support and history.
🔬Scientific Calculator
Trig, powers, roots, factorials — degrees or radians.
％Percentage Calculator
Percent of, percent change, add/subtract percent.
⚖️BMI Calculator
Body mass index with healthy weight range.
🍎BMR & Calorie Calculator
Basal metabolic rate and daily calorie targets.
🎂Age Calculator
Exact age in years, months, days + next birthday.
📅Date Difference
Days, weeks, months and business days between dates.
➕Date Add / Subtract
Add or subtract years, months, weeks and days.
🏦Loan / EMI Calculator
Monthly payments, total interest and amortization.
📈Compound Interest
Investment growth with contributions and chart.
🍽️Tip Calculator
Tip amount, split the bill, round-up option.
🏷️Discount Calculator
Sale price with stacked discounts and tax.
🧾VAT / GST Calculator
Add or extract value-added tax from amounts.
⛽Fuel Cost Calculator
Trip fuel cost, split between passengers.
🎓GPA Calculator
Grade point average from courses and credits.
📊Statistics Calculator
Mean, median, mode, std dev, quartiles and more.
ƒQuadratic Solver
Solve ax² + bx + c = 0 with discriminant and vertex.
⚡Ohm's Law Calculator
Solve voltage, current, resistance and power.
🖥️Aspect Ratio Calculator
Simplify ratios and scale dimensions proportionally.
💰Profit Margin
Margin, markup and profit from cost and price.
🕒Work Hours Calculator
Weekly timesheet with breaks and overtime.
½Fraction Calculator
Add, subtract, multiply and simplify fractions.
🔋Electricity Cost
What your appliances really cost per year.
🔀Permutations & Combinations
nPr, nCr, factorials with exact BigInt math.
🔍Prime Checker
Primality test and prime factorization.
🧷LCM & HCF Calculator
Greatest common divisor and least common multiple.