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Una colección creciente de utilidades y calculadoras rápidas y respetuosas con tu privacidad. Sin registro, sin distracciones.
Utilidades rápidas y privadas para desarrolladores: formatea, codifica y genera en segundos.
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text, right in your browser.
Convert colors between HEX, RGB and HSL with a live preview.
Convert Unix timestamps to human dates and back — UTC, local, ISO 8601 and relative time. Seconds and milliseconds are auto-detected.
Percent-encode and decode URLs and URL components, UTF-8 safe.
Convert JSON to CSV and CSV back to JSON, both ways. Choose the delimiter, handle quoted fields, and copy the result. Everything runs in your browser.
Convert YAML to JSON and JSON back to YAML, both ways. Validates as it converts and shows clear errors. Everything runs in your browser.
Convert numbers between binary, octal, decimal and hexadecimal. Edit any field and the others update instantly. Large values are exact, with no rounding.
Convert CSV to a Markdown table and Markdown tables back to CSV, both directions.
Decode a JSON Web Token to inspect its header and payload, with human-readable expiry and issue times. Runs entirely in your browser; tokens are never uploaded.
Test a regular expression against your text in real time. See every match highlighted, with capture groups and flags. Runs entirely in your browser.
Build and check cron expressions. Pick a preset or edit the five fields, and see the next run times in your time zone. Runs entirely in your browser.
Format, beautify and validate JSON online with clear error messages for invalid input.
Encode text to Base64 or decode Base64 back to text. UTF-8 safe with automatic direction detection.
Generate 5 random RFC 4122 version 4 UUIDs at once. The input is ignored; run again for a new batch.
Minify and validate JSON in your browser, and see how many bytes you save.
Encode text to HTML entities or decode entities back to text, UTF-8 safe and client-side.
Convert Unix file permissions between checkboxes, octal (like 755) and symbolic notation (like rwxr-xr-x).
See your own IP address and look up the location, ISP and network details of any IP.
Generate SEO and social meta tags (title, description, Open Graph, Twitter Cards) with a live search preview.
Check the contrast ratio between two colours against WCAG AA and AAA accessibility levels.
Format and beautify SQL queries with clause line breaks and consistent keyword casing, or minify them to a single line.
Beautify XML with proper indentation, or minify it to a single line. Comments, CDATA and processing instructions are preserved.
Beautify CSS with clean indentation, or minify it to shrink file size. Handles media queries, calc() and license comments.
Beautify HTML with block-aware indentation, or minify it. The contents of pre, textarea, script and style are preserved.
Beautify and prettify JavaScript with consistent indentation and spacing. Runs entirely in your browser.
Convert CSV to an Excel .xlsx file and Excel back to CSV, entirely in your browser. Works in both directions.
Generate TypeScript interfaces from a JSON sample, with nested types, arrays and optional fields. Runs in your browser.
Convert JSON to XML and XML back to JSON, in both directions, entirely in your browser.
Parse a URL query string into JSON and build a query string from JSON, in your browser.
Create and sign HS256 JSON Web Tokens from a payload and secret, entirely in your browser.
Search and look up HTTP status codes and their meanings, from 1xx to 5xx.
Convert a .env file to JSON and JSON back to .env, in both directions, entirely in your browser.
Generate an HMAC for a message and secret key using SHA-1, SHA-256, SHA-384 or SHA-512, in your browser.
Hash a password with bcrypt and verify a password against a bcrypt hash, entirely in your browser.
Convert a curl command into equivalent JavaScript fetch code, entirely in your browser.
Convert JSON to TOML and TOML back to JSON, in both directions, entirely in your browser.
Convert an image into a Base64 data URI for embedding in HTML, CSS or JSON, entirely in your browser.
Generate a tint and shade scale plus complementary, analogous and triadic colors from a base color.
Analiza y transforma texto en segundos.
Convert text between UPPERCASE, lowercase, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE and dot.case.
Count words, characters, lines and sentences in any text.
Compare two texts and highlight the added and removed lines, instantly and in your browser.
Generate placeholder text by paragraphs, sentences or words, with one click.
Remove duplicate lines from a list or text, with options to ignore case, trim and sort.
Reverse text by character, word or line, or flip it upside down.
Clean up messy whitespace: trim lines, collapse spaces, remove blank lines and line breaks.
Turn any title into a clean, SEO-friendly URL slug, with German umlaut handling.
Convert numbers to Roman numerals and Roman numerals back to numbers (1 to 3999).
Sort lines of text alphabetically, numerically or by length, with options to trim, deduplicate blanks and ignore case.
Translate text to Morse code and Morse code back to text, using the international standard.
Convert Markdown to HTML and HTML back to Markdown, with a live preview. Works in both directions.
Extract the text from a PDF and get it as Markdown, entirely in your browser. Your file is never uploaded.
Convert a Word .docx document to clean Markdown in your browser, preserving headings, lists and formatting.
Calculadoras online alemanas para sueldo, impuestos e IVA.
Calculate your German net salary with the official 2025 & 2026 payroll-tax algorithm: tax class, Bundesland, church tax, children and public or private insurance.
Calculate VAT for Germany (19/7 %), Austria (20/13/10 %) and Switzerland (8.1/2.6/3.8 %), both ways: add VAT to a net amount or remove it from a gross amount.
Estimate German Elterngeld: Basiselterngeld and ElterngeldPlus, with the sibling bonus and multiple-birth bonus, based on your net income before birth.
Estimate your German statutory pension from your salary and contribution years using the official pension formula, including early or later retirement and health and care insurance.
Project how savings or an ETF plan grow with compound interest. Set a starting amount, monthly contribution, return and duration, and watch the balance grow year by year.
Calculate German income tax from your taxable income using the official 2025 tariff, with the splitting tariff for couples, solidarity surcharge and church tax.
Estimate the tax on a German severance payment with the one-fifth rule (§34 EStG), and see how much that rule saves compared with normal taxation.
Estimate German statutory sick pay (Krankengeld): 70 % of your gross, capped at 90 % of net and the contribution ceiling, minus social contributions.
Work out your German statutory vacation entitlement, pro-rated for part-time working days and a partial year, under the Federal Leave Act (BUrlG).
Add up cold rent, operating costs and heating into the warm rent, see the price per square metre, and check the rent-to-income ratio.
Work out your share of a building's operating costs by living area and reconcile it against your advance payments, to see a refund or back payment.
Calculate the monthly payment, total interest and effective APR for an annuity loan or credit. Includes an optional fee and a year-by-year repayment chart.
Convert between an hourly rate and weekly, monthly and yearly pay, in both directions.
Calculate the German commuter allowance (Entfernungspauschale) from your one-way distance and number of working days.
Estimate the annual German motor vehicle tax (Kfz-Steuer) for cars first registered from 2021, from displacement, CO2 and fuel type.
See how the purchasing power of an amount changes between two years, using the official German consumer price index.
Pequeñas herramientas prácticas para el día a día.
A simple tap counter. Count up or down with one tap — great for reps, people, stitches or inventory.
Generate strong, random passwords with full control over length and character types. Everything happens in your browser.
Create a QR code from any text or URL. Choose the error correction, colors and quiet zone, then download it as PNG or SVG. Everything runs in your browser.
A countdown timer and a stopwatch in one. Set hours, minutes and seconds for the timer, or track laps with the stopwatch. Includes an alarm sound.
Calculate your Body Mass Index from weight and height in metric or imperial units. See your WHO category, your healthy weight range and an age-based reference.
Estimate your daily protein needs from your body weight and goal, from general health to building muscle or losing fat. Metric and imperial units.
Work out the days between two dates, or add and subtract days, weeks, months and years from a date. Shows the duration, total days and the weekday.
Estimate your daily calorie needs (BMR and TDEE) from your sex, age, height, weight and activity level, with targets for losing, maintaining or gaining weight.
Work out percentages six ways: a percent of a value, what percent one number is of another, the base behind a percent, percentage change, increase or decrease, and percentage difference.
Convierte unidades de longitud, peso, temperatura, volumen, área, velocidad y datos al instante.
Convierte entre más de 30 divisas usando los tipos de referencia diarios del Banco Central Europeo.
Calcula tu edad exacta en años, meses y días, además de totales y tu próximo cumpleaños.
Generate random numbers in any range, with or without duplicates, using secure randomness.
Convert a time across the world's major time zones, with daylight saving handled automatically.
Solve proportional and inverse rule-of-three problems: if A corresponds to B, what does C correspond to?
Work out the tip and split the bill between any number of people, with optional rounding up.
Calculate your weighted grade average from German school grades (1 to 6) with custom weights.
Work out the fuel cost of a trip from distance, consumption and fuel price, and split it between passengers.
Calculate the final price after a percentage discount, or find the discount percentage from the original and sale price.
Estimate your blood alcohol concentration in per mille with the Widmark formula, based on the drink, your weight and the time elapsed.
Work out what an appliance costs to run from its power draw, daily usage and your price per kWh.
Redimensiona, convierte y comprime imágenes directamente en tu navegador.
Cambia el tamaño de imágenes a dimensiones exactas en tu navegador y expórtalas como PNG, JPEG o WebP. Tus fotos nunca salen de tu dispositivo.
Convert SVG vector graphics to PNG raster images at any size, entirely in your browser.
Comprime imágenes JPEG, PNG y WebP a un tamaño de archivo menor en tu navegador, con la calidad que tú controlas.
Vectorize a raster image (PNG, JPG) into a scalable SVG by tracing it, entirely in your browser.
Crop JPG, PNG and other images by dragging a selection, entirely in your browser.
Add a text watermark to an image, with control over size, color, opacity and position, all in your browser.
Convert Apple HEIC and HEIF photos to JPG, entirely in your browser. No upload, no app needed.
Convert images between JPG, PNG and WebP in your browser, with a quality control for the lossy formats.
Rotate and flip an image in your browser, with a live preview, and download the result.
Create a classic meme with top and bottom text on your own image, entirely in your browser.
Blur or pixelate faces, license plates and private details in a photo by drawing over them, entirely in your browser.
Une, divide e inspecciona archivos PDF directamente en tu navegador.
Combina varios archivos PDF en uno solo, en el orden que quieras, por completo en tu navegador. Tus archivos nunca se suben.
Extract specific pages or a range from a PDF into a new file, entirely in your browser.
Count the number of pages in a PDF and see its file size, entirely in your browser.
Convert each page of a PDF into a PNG image, entirely in your browser. Download pages individually or all at once.
Combine JPG, PNG and other images into a single PDF, one image per page, entirely in your browser.
Reduce the file size of a PDF in your browser by re-rendering its pages at a quality you choose.
Rotate every page of a PDF by 90, 180 or 270 degrees, entirely in your browser. Lossless and instant.
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