Free Online Tools

Validate any CPF number instantly. Verify if a Brazilian individual taxpayer ID is real — instant verification, works on any device.

Generate valid CPF numbers for testing and development. Supports batch generation with formatted or raw output. Built for developers and QA teams.

Validate any CNPJ number online in seconds. Check if a Brazilian company registration is valid — instant results, works on mobile and desktop.

Generate valid CNPJ numbers for testing and development. Bulk generation, formatted or digits-only output. Built for developers and QA engineers.

Generate strong, secure passwords with custom length, uppercase, lowercase, numbers and symbols. Runs 100% in your browser — nothing stored, nothing sent.

Generate valid alphanumeric CNPJs in the new RFB format (IN 2.119/2022). The first free tool for the 2026 Brazilian company ID format — ready for your test suite.

Validate CNPJs in the new alphanumeric format (IN RFB 2.119/2022, effective Jul 2026). First free online validator for the new Brazilian company ID format.

Calculate your BMI (Body Mass Index) with WHO classification in 6 categories. Find your ideal weight for your height. Instant and free result.

Calculate percentages quickly: increase, discount, ratio and percentage change. 4 calculation modes with instant results. Free online calculator.

Look up any Brazilian CEP (zip code) and get the full address instantly. Street, neighborhood, city and state. Free tool with ViaCEP integration.

Count characters, words, sentences and lines in real time. Perfect for Twitter, Instagram, meta descriptions and essays. Free online tool — use now.

Validate and identify the type of Brazilian Pix key: CPF, CNPJ, email, phone or random key (EVP). Instant format verification. 100% in your browser.

Convert text to UPPERCASE, lowercase, capitalized, inverted, URL slug and more. 8 conversion modes with instant results. Copy with one click.

Convert decimal numbers to Roman numerals and vice versa. Supports values from 1 to 3,999,999 with vinculum notation. Instant result — use now.

Generate Lorem Ipsum text for design and development. Paragraphs, sentences, words or lists. Customizable from 1 to 100 units. Copy with one click.

Convert numbers between binary, octal, decimal and hexadecimal instantly. Supports large integers (BigInt). Simultaneous output in all 4 bases.

Create custom QR Codes for URLs, text, email, phone and Wi-Fi. Choose size and error correction level. Download as PNG — 100% browser-based. Use now.

Calculate worked hours, overtime (50% and 100%) and time bank. Supports night shifts and Brazilian CLT rules. Output in HH:MM and decimal format.

Generate Pix QR Codes for instant payments in Brazil. EMV/BRCode standard from Central Bank. Works with all banks and fintechs. Browser-based, use now.

Generate barcodes in EAN-13, EAN-8, Code128, UPC-A, ITF-14 and more formats. Download as PNG or SVG. Free for commercial use and testing.

Validate the 44-digit access key of Brazilian NFe/NFCe with Modulo 11 check digit. Decodes state, date, CNPJ, model and series. Instant result.

Generate valid NFe access keys (44 digits) for software testing and fiscal integration. Correct Modulo 11 check digit. Free tool for developers.

Calculate your Brazilian employment severance with all CLT entitlements: salary balance, 13th, vacation, FGTS and 40% penalty. All dismissal types.

Calculate your Brazilian net salary 2026 with progressive INSS and updated IRRF deductions (Law 15.270/2025). Detailed bracket-by-bracket result.

Calculate the monthly DAS MEI tax 2026 (minimum wage R$ 1,518). Commerce, service or mixed. Includes payment calendar. Instant result.

Convert currencies in real time with official PTAX rates from Central Bank of Brazil. Dollar, euro, pound and 20+ currencies. Auto-updated daily.

Look up Brazilian company data by CNPJ: business name, CNAE, address, registration status and partners. Official Federal Revenue open data. Free lookup.

Format CPF numbers in bulk: add or remove mask (XXX.XXX.XXX-XX). 100% free and browser-based.

Format CNPJ numbers (numeric and alphanumeric): add or remove mask. Supports the new Jul/2026 format.

Decode PIX copy-and-paste codes: see name, key, amount and city before paying. 100% secure, browser-based.

Validate multiple CPFs at once: paste a list and see which are valid or invalid. 100% free.

Validate multiple CNPJs (numeric and alphanumeric) at once. 100% free and browser-based.

Validate Brazilian State Registration (Inscrição Estadual) for all 27 states. 100% free.

Validate Brazilian PIS, PASEP or NIT numbers by checking the verification digit. 100% free.

Calculate monthly FGTS deposits, accumulated balance and 40% penalty. 100% free.

Calculate compound interest with monthly contributions. See final amount, total invested and earnings. 100% free.

Generate multiple valid CPFs at once for testing. Export as text, CSV or JSON. 100% free.

Generate multiple valid CNPJs (numeric and alphanumeric) for testing. 100% free.

Generate UUIDs/GUIDs v1, v4 and v7 online. Copy or batch export. 100% free and browser-based.

Format, minify and validate JSON online with syntax highlight. Detects errors. 100% free.

Encode and decode Base64 online. Supports UTF-8 text and files. 100% free and browser-based.

Convert JSON to CSV and CSV to JSON online. Table preview. Free download.

Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from text or file online. Compare hashes. 100% free.

Encode and decode URLs online. Supports encodeURI and encodeURIComponent. 100% free.

Validate Brazilian voter ID (Título de Eleitor) check digits. Identifies origin state. 100% free.

Validate Brazilian vehicle registration (RENAVAM) check digit. 100% free and browser-based.

Calculate direct and inverse rule of three online. Instant result, 100% free, no signup required.

Calculate how many days, weeks, and months between two dates. Includes business days. 100% free and online.

Convert numbers to words in English. Supports currency values (USD). 100% free.

Convert Unix timestamp to human date and vice-versa. Supports seconds and milliseconds. 100% free.

Calculate Brazilian CLT vacation pay with 1/3 bonus, INSS and income tax. Official 2026 tables. 100% free.

Calculate Brazilian 13th salary (Christmas bonus) with INSS and income tax. 1st and 2nd installments. 100% free.

Calculate Brazilian unemployment insurance (seguro desemprego) amount and installments. 2026 official table. 100% free.

Generate valid credit card numbers for testing (Visa, Mastercard, Amex). Luhn algorithm. 100% free.

Generate fictional bank account data for testing: branch, account, bank. Real Brazilian banks. 100% free.

Convert units of length, weight, temperature, area, and volume. Instant results, 100% free.

Draw random numbers or names online with cryptographic transparency (SHA-256). Auditable, free, no signup.

Generate fancy text, stylish fonts and decorative symbols for usernames, bios and social media. Copy and paste free.

Calculate gestational age in weeks, estimated due date (EDD) and pregnancy trimester. 100% free.

Read QR Codes online using your camera or by uploading an image. Instant result, 100% free.

Create a custom spinner wheel with your options. Spin, pick a winner and share the result. 100% free.

Simulate real estate loans with Price or SAC tables. See installments, interest and total cost. 100% free.

Calculate business days between two dates considering Brazilian national holidays. 100% free.

Online stopwatch with millisecond precision, lap button and history. 100% free.

Roll virtual dice online. Choose 1 to 6 dice, with 3D animation and result history. 100% free.

Generate custom WhatsApp links with message. Create wa.me link, copy or generate QR Code. 100% free.

Find and copy emojis organized by category. Click to copy. 100% free, no signup required.

Create an online countdown timer to any date and time. With fullscreen and alarm. 100% free.

Simulate savings account returns with monthly deposits. See monthly projection with current Selic rate. 100% free.

Calculate overtime pay under Brazilian CLT: 50% (weekday), 100% (weekend/holiday) and night premium. 100% free.

Calculate the amount of meat, drinks, charcoal and sides for your barbecue. By number of guests. 100% free.

Find out whether gasoline or ethanol is more cost-effective. Calculated using the 70% rule. 100% free.

Find and copy special symbols, arrows, Unicode characters and more. Click to copy. 100% free.

See today's moon phase, illumination and monthly lunar calendar. Next full moon and new moon. 100% free.

Calculate your exact age in years, months, days and hours. Know how many days until your next birthday. 100% free.

Simulate personal loans with fixed installments. See interest, total effective cost and total amount. 100% free.

Generate random numbers with custom range. Set minimum, maximum and quantity. 100% free.

Add or subtract days, weeks or months from a date. Calculate future or past dates instantly. 100% free.

Reverse text, words or sentences online. Generate mirrored, backwards or word-reversed text. 100% free.

Compare two texts side by side and find differences highlighted by color. Free online diff tool.

Generate valid Brazilian State Registration numbers (Inscrição Estadual) for all states. Ideal for testing. Free.

Generate valid random Brazilian zip codes (CEP) by state or range. Perfect for populating test databases and QA environments.

Calculate your fertile window and ovulation days based on your menstrual cycle. Instant free results.

Generate fictitious company data: CNPJ, State Registration, company name, full address. Ideal for testing.

Generate valid Brazilian RG (identity card) numbers by state. Ideal for system testing. 100% free.

Generate valid Brazilian driver license (CNH) numbers for system testing. Official algorithm. 100% free.

Test your typing speed in words per minute (WPM). Improve your typing with English texts. Free.

Generate random numbers for Mega-Sena, Lotofácil, Quina and other Brazilian lotteries. 100% free.

Check all Brazilian national holidays for 2025 and 2026. Complete calendar with dates and weekdays. Free.

Use the Pomodoro technique with an online timer. 25 minutes of focus + 5 break. Boost your productivity. Free.

Calculate fraction operations: addition, subtraction, multiplication, division and simplification. Instant results.

Calculate the Least Common Multiple (LCM) of two or more numbers. Step-by-step results. 100% free.

Calculate the Greatest Common Divisor (GCD) of two or more numbers. Step-by-step results. 100% free.

Convert text to Morse code and vice versa. Morse translator with sound and quick copy. 100% free.

Generate a QR code to share your Wi-Fi network. Just scan to connect. No data is sent. 100% free.

Generate random male, female or neutral names. Ideal for games, RPG, characters and testing. Free.

Generate creative and unique nicknames for games, Free Fire, Instagram, Discord and social media. 100% free.

Extract individual frames from any spritesheet image online. Upload your spritesheet, set columns and rows, preview animation, and download all frames as a single ZIP. 100% free, in-browser.

Search, copy and download free Lucide icons as SVG or PNG. Choose size, color and stroke. 1,500+ MIT icons.

Check your password strength instantly. Entropy analysis, crack time estimation and security tips. 100% free and offline.

Sort lines of text alphabetically (A-Z or Z-A). Remove duplicates, ignore case. 100% free.

Free online tool to split text by delimiter: comma, semicolon, pipe, tab, regex or custom.

Remove accents and diacritics from any text. Great for URLs, usernames and normalization. Free.

Generate fictitious Brazilian vehicle data: Mercosul plate, chassis/VIN, RENAVAM, brand and model.

Flip your text upside down using special Unicode characters. Copy and paste to social media. Free.

Analyze Unicode characters: codepoint, category, block, UTF-8/UTF-16 encodings, HTML entity.

Convert text to binary code and binary to text. Supports ASCII and UTF-8. 100% free in browser.

Generate fictitious Brazilian certificate registration numbers per CNJ Provision 73/2018.

Calculate simple interest: principal, rate, time and total. Formula I = P × r × t. 100% free.

Calculate your INSS deduction for 2026 with progressive rates (7.5% to 14%). Official updated table. See your exact contribution — free, instant result.

Pick any color and instantly convert between HEX, RGB and HSL formats. Visual color wheel, manual input, copy code with one click. Free for designers & developers.

Find the week number and day of year for any date. Calendar with ISO weeks. Free.

Discover the current season (summer, autumn, winter, spring) and solstice/equinox dates. Free.

Generate a professional typographic scale from a base size and ratio. Preview all heading levels and export as CSS variables.

Search COMPE and ISPB codes for all Brazilian banks. Find bank codes by name or number. Complete list of 200+ institutions — free, instant results.

Calculate delay times, bar length, and rhythmic subdivisions from any BPM. Essential tool for music producers and DJs.

Generate SEO-optimized HTML meta tags: title, description, Open Graph, Twitter Card. Copy code. Free.

Find and replace words in any text. Supports regex, case sensitive and highlighting. Free.

Convert text to Grade 1 Braille Unicode (⠓⠑⠇⠇⠕) with visual dot cell display. Free accessibility tool.

Calculate exact probability distribution for any dice notation (3d6+2). Bar chart, cumulative probability, advantage/disadvantage.

Add prefix and/or suffix to each line of text. Great for SQL, CSV and lists. 100% free.

Test and improve your reading speed with RSVP (Rapid Serial Visual Presentation). Free.

Validate and identify tracking codes from Correios, FedEx, DHL, UPS and other carriers instantly. Detect carrier automatically.

Browse the full ASCII table with all 128 characters, decimal, hexadecimal and binary codes. Free.

Organize, validate and analyze .env files: sort alphabetically, group by prefix, detect duplicates and flag sensitive keys.

Generate Apache .htaccess rules visually: HTTPS redirect, www, cache control, CORS, IP blocking, directory protection and more.

Detect your browser User Agent and parse browser, OS and device information. Free.

Convert subtitles between SRT, VTT and ASS formats with time offset adjustment. Free online tool with no file size limit.

Upload CNAB 240 or CNAB 400 bank files and view all records in a readable table with decoded field labels.

Upload a Brazilian NF-e XML file and view issuer, recipient, products, taxes and totals in a clean, organized layout.

Extract dominant colors from any image using k-means algorithm. Get HEX, RGB, HSL and export as CSS variables or JSON.

Create your professional resume online with modern templates. Export to PDF or HTML. 100% free.

Validate credit card numbers with Luhn algorithm. Detects brand (Visa, Mastercard, Elo). Free.

Convert any image to pixel art with customizable pixel size and color palette. Supports NES, Game Boy, C64 and custom palettes.

Convert any image to ASCII art with configurable width and character sets. Download as TXT, HTML or colored PNG.

Validate agency and account of Brazilian banks (BB, Itaú, Bradesco, Caixa, Santander). Free.

Encrypt text with Caesar, ROT13, Atbash, Vigenère, Base64 or Morse. Free in browser.

View all EXIF metadata from photos (camera, GPS, ISO, date) and remove it with one click to protect your privacy.

Calculate CRC32 hash of text or files. Result in hexadecimal and decimal. 100% free.

Upload your Minecraft skin PNG and see all body parts (head, torso, arms and legs) mapped in a flat layout view.

Count how many times each word appears in text. Visual bar chart. Free in browser.

Cut tall images into equal slices with a visual preview of cut lines. Perfect for webtoons, infographics and Instagram content.

Convert plain text to HTML with paragraphs, links and automatic lists. Real-time preview. Free.

Resize and crop images to all Steam Library formats: Hero, Capsule, Grid, Poster and more. Download all at once as ZIP.

Create .ico favicons from text, emoji or image upload. Generate multiple sizes (16, 32, 48px) with real browser tab preview.

Discover how long it takes to save $1 million with monthly contributions and compound interest. Free.

Convert PNG images to TGA format for WoW addon icons with correct dimensions (64×64, 128×128, 256×256) and Lua snippet.

Calculate total cost of domestic workers: employer INSS, FGTS, vacation, 13th salary. 2026 table. Free.

Convert typed text into a handwriting-style image. Choose cursive, print or messy style with paper background options.

Generate random words in Portuguese, English or Spanish. Categories: nouns, adjectives, verbs. Free.

Generate placeholder images with custom dimensions, colors and text. PNG, JPEG or WebP. Free.

Upload a GEDCOM file (.ged) and visualize your family tree with a person list, statistics and generational chart.

Convert images between PNG, JPG and WebP directly in your browser, no installation needed. Free for one file, Pro plan for batch conversion and ZIP download.

See the current time in any time zone worldwide. Compare time zones in real time. Free.

Track moon phases: new, waxing, full, waning. Monthly calendar with illumination percentage. Free.

Compress PNG, JPG and WebP images without visible quality loss. See file size reduction in real time. Free for one file, Pro plan for batch compression.

Resize images by exact dimensions, percentage or social media presets (Instagram, YouTube, LinkedIn). Free for one file, Pro plan for batch resizing.

Look up FIPE prices for cars, motorcycles and trucks in Brazil. Updated data. 100% free.

Find your public IP address, location, ISP and browser information. 100% free.

Convert each PDF page to a PNG, JPG or WebP image directly in your browser. Free plan: 3 pages. Pro plan: full PDF at up to 300 DPI with ZIP download.

Combine multiple PDF files into one document with drag-and-drop reordering. Free plan: up to 3 PDFs. Pro plan: unlimited files up to 20 MB each.

Calculate rent readjustment by IGP-M, IPCA or INPC. Central Bank data. 100% free.

Create colorful word clouds from any text. SVG download. Free in browser.

Rewrite and paraphrase text with AI. 6 modes: Standard, Formal, Creative, Shorter, Longer, Simpler. Free to try.

Fix spelling and grammar errors in Portuguese, English and Spanish. Automatic suggestions. Free.

Generate professional payment receipts with amount in words. Print or save as PDF. Free.

Generate promissory notes compliant with Brazilian Uniform Law (Decree 57.663/1966). Print ready. Free.

Validate any IBAN (International Bank Account Number) instantly. Supports 77 countries. ISO 13616, MOD-97 algorithm. Free.

Calculate VAT (Value Added Tax) for any amount. Add or remove tax. Preset rates for Germany, UK, France, and more. Free.

Calculate the perfect tip and split the bill among friends. Customizable tip rate 0–30%. Shows total and per-person amount. Free.

Calculate and maintain image aspect ratios. Resize images without distortion or find the simplified ratio of any dimensions. Free.

Calculate your vehicle fuel consumption in L/100km, km/L, and MPG. Metric and imperial units. Optional cost per km calculation. Free.

Calculate your maximum heart rate and 5 training zones. Fox, Tanaka, and Haskell formulas. Karvonen method included. Free.

Test and debug regular expressions in real time. See matches highlighted, capture groups extracted, and flags applied. Supports JavaScript regex syntax. Free.

Build cron expressions visually with next run preview. Supports minute, hour, day-of-month, month, and day-of-week. Free.

Decode and inspect JWT tokens with header, payload analysis, and expiration check. Client-side only — your tokens never leave the browser. Free.

Calculate Unix/Linux file permissions with visual checkboxes. Convert between numeric and symbolic modes. Free.

Calculate IPv4 subnets with CIDR notation. Get network address, broadcast, mask, host range, and more. Free.

Create CSS gradients (linear, radial, conic) with real-time preview and copy-ready code. Free.

Edit Markdown with a full toolbar and real-time side-by-side preview. GFM support (tables, checklists). Free.

Format and beautify SQL queries with automatic indentation and syntax highlighting. Multi-dialect support. Free.

Create CSS box-shadow effects visually. Multiple layers, color picker, blur and spread controls, ready-made presets. Copy the code with one click.

Validate, format, and convert YAML to JSON with error detection and statistics. 100% free.

Create robots.txt files with User-Agent rules, AI blocking, sitemaps, and presets for WordPress, Next.js, and more. Free.

Convert pixels to REM and back with a reference table and Tailwind CSS support. Custom base font size. Free.