Free online Converters tools

Convert between formats: CSV, JSON, Markdown, QR, Morse and more.

20 tools

Barcode generatorGenerate barcodes ready for labels, products and inventory. For EAN, UPC and ITF-14 we automatically calculate the check digit or warn you if yours is wrong, and you can download the result as high-resolution PNG or vector SVG.

Create a ZIP fileAdd the files you want to bundle and download them as a single ZIP: ideal for emailing several documents or saving space. You choose the name and compression level, and the files never leave your device because everything is compressed in your browser.

Convert CSV to Excel (XLSX)Upload a CSV or TSV, or paste its content, and download a real Excel file with sized columns and numbers stored as numbers instead of text. It detects whether the delimiter is a comma, semicolon or tab, and accented characters are preserved. Everything happens in your browser.

CSV to JSON converterPaste your CSV or drop the file exported from Excel or Google Sheets and get clean JSON right away. We detect commas, semicolons or tabs, respect quoted fields and show you a table preview.

Convert Excel (XLSX) to CSVOpen an Excel workbook, choose the sheet you need and download it as CSV with the delimiter you prefer: comma, semicolon, tab or pipe. You can add a UTF-8 BOM so Excel shows accents correctly when you reopen it. The file is read in your browser and not uploaded.

Unzip a ZIP fileDrag in a ZIP and you will see the list of files it contains, with their sizes. You can search by name and download only the one you need or all of them. The ZIP is opened in your browser, so its contents are never uploaded to any server.

Convert HTML to MarkdownPaste HTML code — or copy a formatted article from a web page and paste it directly — and get clean, readable Markdown with headings, lists, links, images, tables and code blocks. You can pick the heading style, bullets and link style. The conversion runs in your browser.

JSON to CSV converterPaste an API response or any JSON file and get a CSV table ready for Excel or Google Sheets. Nested objects become columns like address.city, and we find the data array even when it sits inside { "data": [...] }.

JSON ↔ YAML ↔ XML converterMove data between JSON, YAML and XML instantly. Handy for config files, APIs and legacy documents. Everything is processed in your browser and nothing is sent to a server.

Markdown to HTML converterType or paste Markdown and instantly get its preview and clean, safe HTML code. It includes a formatting toolbar with keyboard shortcuts, an automatic table of contents linking to each section and a download as a ready-to-publish HTML page.

Morse code translatorType text to turn it into dots and dashes, or paste Morse code to decode it: the direction is detected automatically. Play it with sound and a light flashing in rhythm at any speed, and download it as WAV audio.

px ↔ rem ↔ em ↔ vw converterTurn any CSS measurement into the other units instantly. Adjust the base size and viewport for exact equivalents, and click a result to copy it.

QR code generatorGenerate static QR codes for anything: your website, your business WiFi password, a digital business card or a pre-filled SMS. They never go through a link shortener or expire, and you can download them in high resolution or as vector SVG for print.

Text to binary (and binary to text) translatorType some text and get the binary, hexadecimal, octal or decimal code of each byte, or paste codes to recover the original text. It works with UTF-8, so it also converts accented letters, symbols and emojis, and you can choose the separator between bytes.

Text to speech: read text aloudPaste any text and hear it read aloud with the speech-synthesis voices installed on your computer or phone. The word being spoken is highlighted on screen, and long texts are read in chunks so they never cut off.

Time zone converterPick a date and time in your zone and instantly see the time in the other cities you add. It accounts for daylight saving and tells you when the day changes.

Turn a URL into a QR codePaste the link to your website, menu, profile or form and get a QR code ready to print. It is a static QR: the address lives inside the code itself, with no middle service that could expire, charge or track your visitors.

vCard QR code generator for business cardsTurn your business card into a QR that adds your contact to the phone’s address book with a single scan: name, company, job title, phone, email, website and address. It is a static QR so it never expires, and your details stay in your browser.

WhatsApp link generatorCreate a direct link so customers can message you on WhatsApp with one tap, with the text you choose already written. It works with any country code, also produces a QR code, and everything happens in your browser.

WiFi QR code generatorStop dictating the WiFi password: generate a QR with your network name and key so guests, customers or colleagues connect just by scanning it with their camera. The password is encoded in your browser and never sent to a server.