Free Data Tools

Excel to JSON

Convert .xlsx/.xls spreadsheets to JSON format

JSON to Excel

Convert JSON arrays into downloadable .xlsx files

CSV to JSON

Parse CSV files or text into structured JSON

JSON to CSV

Flatten JSON arrays into downloadable CSV files

JSON Formatter

Beautify, minify, and validate JSON data

Analyzer

Data Viewer & Stats

View CSV, JSON, or Excel data with summary statistics

Analyzer

Duplicate Remover

Find and remove duplicate rows from CSV or JSON data

Analyzer

Sample Data Generator

Generate realistic mock datasets in JSON or CSV

Generator

Text Case Converter

Convert text between UPPER, lower, Title, and more

Generator

Base64 Converter

Encode and decode Base64 strings instantly

Generator

XML to JSON

Convert XML data into structured JSON format

SQL INSERT Generator

Generate SQL INSERT statements from JSON or CSV

Regex Tester

Test and debug regular expressions with real-time matching

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes

URL Encoder/Decoder

Encode and decode URLs and query parameters

Markdown Table Generator

Create markdown tables from data or a grid editor

BMI Calculator

Calculate Body Mass Index with health category

Unit Converter

Convert medical and scientific units bidirectionally

Calorie Calculator

Calculate BMR, TDEE, and macro split for your goals

ICD-10 Code Search

Search common ICD-10 diagnosis codes by name or code

Find & Replace

Find and replace text with regex support and preview

Cleaning

Column Reorder/Remove

Drag to reorder or toggle CSV columns on and off

Cleaning

Null Value Handler

Detect and handle null, empty, and NaN values in data

Cleaning

JSON to SQL Schema

Generate CREATE TABLE statements from JSON data

Cron Expression Builder

Build cron expressions visually with next-run preview

JWT Decoder

Decode and inspect JWT token header and payload

UUID Generator

Generate UUID v4 identifiers in bulk with options