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Free online tools that just work
A growing collection of fast, privacy-friendly utilities and calculators. No sign-up, no clutter.
- 207 tools
- Files never leave your device
- Official formulas for tax & pension
Tip: drop a file anywhere on this page to open it in the right tool.
Popular
QR Code Generator
Everyday Tools
Create a QR code from any text or URL and download it as PNG or SVG.
JSON Formatter
Developer Tools
Format, beautify and validate JSON online with clear error messages for invalid input.
Merge PDF
PDF Tools
Combine several PDFs into one, in any order, right in your browser.
Metadata Remover
Image Tools
Strip EXIF, GPS and camera metadata from photos, right in your browser.
Image Compressor
Image Tools
Compress JPEG, PNG and WebP images to a smaller size in your browser.
BMI Calculator
Everyday Tools
Calculate your BMI from weight and height and see your WHO category.
Currency Converter
Everyday Tools
Convert between 30+ currencies using daily European Central Bank reference rates.
Percentage Calculator
Everyday Tools
Work out percentages six ways, from percent of a value to percentage change.
Fast, privacy-friendly utilities for developers: format and validate JSON, encode and hash, generate UUIDs and tokens, and clean up code. Free, no sign-up.
Base64 Encoder
Encode text to Base64 or decode Base64 back to text. UTF-8 safe with automatic direction detection.
Bcrypt
Hash a password with bcrypt and verify a password against a bcrypt hash, entirely in your browser.
chmod Calculator
Convert Unix file permissions between checkboxes, octal (like 755) and symbolic notation (like rwxr-xr-x).
Color Converter
Convert colors between HEX, RGB and HSL with a live preview.
Color Palette
Generate a tint and shade scale plus complementary, analogous and triadic colors from a base color.
Contrast Checker
Check the contrast ratio between two colours against WCAG AA and AAA accessibility levels.
Cron Generator
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.
CSS Formatter
Beautify CSS with clean indentation, or minify it to shrink file size. Handles media queries, calc() and license comments.
Convert, clean and reshape CSV and tabular data: CSV to JSON, XML, SQL and back, extract and de-duplicate, edit and query, all in your browser.
Change delimiter
Change a file's delimiter: read CSV with one separator and write it with another, such as comma to tab (TSV) or pipe. Runs in your browser.
CSV / Excel
Convert CSV to an Excel .xlsx file and Excel back to CSV, entirely in your browser. Works in both directions.
CSV → flat file
Convert CSV into an aligned fixed-width flat file, padding each column to its widest value. Runs entirely in your browser.
CSV → GeoJSON
Convert CSV with latitude and longitude columns into a GeoJSON FeatureCollection of points. Runs entirely in your browser.
CSV → HTML
Convert CSV into a clean, semantic HTML table with a header and body, ready to paste into a page. Runs in your browser.
CSV → JSON
Convert CSV to a JSON array of objects, with types inferred. Choose the delimiter and copy the result. Runs entirely in your browser.
CSV → KML
Convert CSV with latitude and longitude columns into KML placemarks for Google Earth and Maps. Runs entirely in your browser.
CSV → Markdown
Convert CSV into a GitHub-flavored Markdown table, ready to paste into a README or issue. Runs entirely in your browser.
Analyse and transform text in seconds: count words, change case, remove duplicates, sort lines, compare differences and convert Markdown. Free and private.
Case Converter
Convert text between UPPERCASE, lowercase, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE and dot.case.
Diff Checker
Compare two texts and highlight the exact lines and words that changed, instantly and in your browser.
Lorem Ipsum
Generate placeholder text by paragraphs, sentences or words, with one click.
Markdown / HTML
Convert Markdown to HTML and HTML back to Markdown, with a live preview. Works in both directions.
Morse Code
Translate text to Morse code and Morse code back to text, using the international standard.
PDF to Markdown
Extract the text from a PDF and get it as Markdown, entirely in your browser. Your file is never uploaded.
Remove Duplicates
Remove duplicate lines from a list or text, with options to ignore case, trim and sort.
Roman Numerals
Convert numbers to Roman numerals and Roman numerals back to numbers (1 to 3999).
German online calculators for salary, tax and pension: net pay, income tax, VAT, loans and benefits, with the official 2026 rates. Free, no sign-up.
bAV Calculator
See what a monthly bAV salary conversion (Entgeltumwandlung) costs you in net pay and how much lands in your company pension after the employer subsidy.
Brut to Net
Convert a French monthly gross salary to net in seconds. Based on the official 2026 employee contribution rates: vieillesse, Agirc-Arrco, CSG/CRDS.
BTW
Calculate Dutch BTW for 2026. Enter a net amount (excl. BTW) or a gross amount and get the full breakdown at the 21% standard rate or the 9% reduced rate.
Compound Interest
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.
Debt Payoff
See how fast you can be debt-free with the avalanche or snowball method, and how much interest an extra payment saves.
Elterngeld Calculator
Estimate German Elterngeld: Basiselterngeld and ElterngeldPlus, with the sibling bonus and multiple-birth bonus, based on your net income before birth.
French Income Tax
Estimate French income tax on 2025 income using the official 2026 barème, with the quotient familial (parts), plafonnement and décote.
French VAT
Calculate French TVA: enter an amount HT or TTC and get the breakdown at 20 %, 10 %, 5.5 %, or 2.1 %.
Handy little tools for everyday tasks: timers and counters, unit and currency converters, health and money calculators, and code and QR generators.
Age Calculator
Calculate your exact age in years, months and days, plus totals and your next birthday.
Barcode
Create Code 128, EAN, UPC and more, one barcode per line, and download them as PNG, SVG, or a zip.
Blood Alcohol
Estimate your blood alcohol concentration in per mille with the Widmark formula, based on the drink, your weight and the time elapsed.
BMI Calculator
Calculate your BMI from weight and height and see your WHO category.
BMR Calculator
Estimate your basal metabolic rate and daily calories (TDEE) with three formulas.
Body Fat Calculator
Estimate your body fat percentage with the US Navy tape method or a BMI-based formula, plus your fat mass and lean mass, in metric or imperial units.
Calorie Calculator
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.
Code 128
Generate dense Code 128 barcodes for SKUs, serials, and logistics labels, single or in bulk, as PNG or SVG.
Resize, convert and compress images right in your browser: crop, rotate, blur, watermark, remove backgrounds and strip metadata. Nothing is uploaded.
Blur Image
Blur or pixelate faces, license plates and private details in a photo by drawing over them, entirely in your browser.
Crop Image
Crop JPG, PNG and other images by dragging a selection, entirely in your browser.
HEIC to JPG
Convert Apple HEIC and HEIF photos to JPG, entirely in your browser. No upload, no app needed.
Image Compressor
Compress JPEG, PNG and WebP images to a smaller size in your browser.
Image Converter
Convert images between JPG, PNG and WebP in your browser, with a quality control for the lossy formats.
Image Resizer
Resize images to exact dimensions in your browser and export as PNG, JPEG or WebP. Your photos never leave your device.
Image to SVG
Vectorize a raster image (PNG, JPG) into a scalable SVG by tracing it, entirely in your browser.
Meme Generator
Create a classic meme with top and bottom text on your own image, entirely in your browser.
Merge, split and inspect PDF files right in your browser: convert to and from images, compress, rotate, add page numbers, protect and unlock. Free.
BMP to PDF
Turn BMP bitmap images into a single PDF, one image per page, right in your browser.
Compress PDF
Reduce the file size of a PDF in your browser by re-rendering its pages at a quality you choose.
HEIC to PDF
Turn HEIC and HEIF photos from your iPhone into a single PDF, one image per page, right in your browser.
Images to PDF
Combine JPG, PNG and other images into a single PDF, one image per page, entirely in your browser.
JPG to PDF
Turn JPG and JPEG photos into a single PDF, one image per page, right in your browser.
Linearize PDF
Rewrite a PDF for fast web view, so a reader can display the first page before the whole file has downloaded. Runs entirely in your browser.
Merge PDF
Combine several PDFs into one, in any order, right in your browser.
Organize PDF
Reorder and delete pages in a PDF, then save the rearranged file, entirely in your browser.