Data Tools

Convert CSV data to JSON format instantly online with support for quoted fields and type detection

Generate TypeScript interfaces from JSON data with recursive type inference and nested object support

Turn pasted CSV or a .csv file into a real .xlsx workbook you can open in Excel. Quoted fields, commas, and newlines inside cells all survive.

Convert CSV data to SQL INSERT statements with optional CREATE TABLE generation

Upload XLSX, XLS, CSV or TSV files and convert spreadsheet data to JSON

Convert JSON arrays to CSV format with proper quoting and header extraction

Convert JSON arrays to real .xlsx Excel files in your browser, with a BOM CSV export as a fallback

Convert JSON data to Go struct definitions with proper field names, types, and json tags

Convert a JSON array of objects to a formatted Markdown table

Convert JSON data to Python dataclass definitions with proper type annotations and imports

Convert JSON data to well-formatted XML with proper indentation and XML declaration

Generate Zod validation schemas from JSON data with type inference and nested object support

Parse Markdown tables and convert them to JSON arrays of objects

Extract data from SQL INSERT statements and convert to CSV format

Convert XML data to JSON format with support for attributes, nested elements, and arrays

Generate QR codes for text, URLs, emails, phone numbers, WiFi networks, and vCards

Generate fake user records, name, email, username, age, role, company, city, phone, avatar, in JSON, CSV, or SQL format.

Generate unique usernames combining adjectives, animals, nouns, and optional digits or year suffixes, 4 styles, 4 separator options.

Create a QR code that lets guests join your Wi-Fi by scanning, no typing the password. Enter the network name, password, and security type, then download it.

Generate Code 128B barcodes from text with customizable height and PNG download

Generate realistic fake data for testing including names, emails, phones, addresses, UUIDs, IPs, and credit card numbers

Generate cryptographically random numbers with configurable range, count, uniqueness, and sorting

Generate random strings with configurable length, charset, prefix, suffix, and count

Generate multiple UUIDs at once with customizable format options

Flip a virtual coin one at a time or in batches up to 1,000. Tracks heads/tails ratio, longest run, and full flip history.

Spin a colorful wheel with your custom options to make any decision randomly, perfect for picking dinner, group choices, or breaking ties.

Roll any dice, d4, d6, d8, d10, d12, d20, d100, singly or in batches, with modifiers and full RPG dice notation (3d6+2).

Generate random dates within a custom range, ISO, US, EU, long, or Unix format. Optional time component. Up to 500 at once.

Paste a list of names and pick a random winner with a quick shuffle animation. Draw one or several, and optionally remove each winner so nobody repeats.

Paste a list of people and split them into fair, random teams. Pick the number of teams or the team size, then shuffle again until it looks right.

Ask any yes/no question, get a random answer, optional "maybe" mode for three-way uncertainty.

Generate random bingo cards in seconds. Use classic number bingo or paste your own words for custom cards, then print them for class, parties, or game night.

A simple online countdown timer with a clear display and an alarm. Set hours, minutes, and seconds, use a quick preset, and get a beep when time is up.

Set an online alarm for any clock time and get a loud beep when it hits. Add a label, arm several alarms at once, and see the live current time.

Find a meeting time that works across multiple cities, color-coded grid showing working hours, fringe hours, and sleep hours per zone.

Add or subtract years, months, weeks, and days from a date, or measure the gap between two dates as a years-months-days breakdown plus total days and weeks.

Search 120+ countries by name, ISO-2 (US), ISO-3 (USA), numeric code, or international dialing code (+1), all four shown side by side.

Quick reference of Stripe test card numbers, successful charges, declines, 3D Secure, fraud scenarios, international, all copyable.

Browser stopwatch with start/stop, laps, and 10-millisecond precision, runs entirely client-side, no install.

Classic 25/5/15 work-break timer with audio cue, completed-pomodoro counter, and settings that save in your browser.

Find and highlight duplicate items in a list with counts and unique item extraction

Analyze password strength with detailed scoring, crack time estimation, and security checks

Validate email addresses by RFC syntax rules, bulk-check a list, see specific failure reasons, and get typo suggestions for common domain misspellings.

Remove duplicate elements from a JSON array using deep structural equality, or dedupe objects by a chosen key. Pretty output.

A free online tally counter with multiple named counters that save in your browser. Tap to add, use the spacebar, and never lose your count on refresh.

Decode a 17-character VIN offline. Validates the check digit, splits the WMI, VDS, model year and plant code, all in your browser.

Validate CSV data for consistent columns, proper quoting, and common formatting issues

Shuffle a list of items randomly using the Fisher-Yates algorithm with cryptographic randomness

Scan and decode QR codes from images or camera using the BarcodeDetector API