Online Converter Tools for Data & Files — JSON, CSV, YAML, Numbers & More

The Power of Instant Data Conversion

Data rarely comes in the format you need. APIs return JSON when you need CSV. Clients send spreadsheets when your app needs YAML. Timestamps arrive in epoch format when you need human-readable dates. The list goes on. Creative Tools offers 60+ converter utilities that handle all these transformations instantly in your browser. No file uploads, no server processing — just paste, convert, and copy.

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Data Format Converters

JSON to CSV Converter

The JSON to CSV Converter transforms structured JSON arrays into comma-separated values that open perfectly in Excel, Google Sheets, or any spreadsheet program. It automatically detects headers from JSON keys and handles nested objects.

• Auto header detection — Keys become column headers automatically
• Nested object flattening — Handles multi-level JSON structures
• Custom delimiters — CSV, TSV, or any separator you need
• Instant download — Save the converted file immediately

CSV to JSON Converter

The CSV to JSON Converter does the reverse — turn spreadsheet data into structured JSON for APIs, databases, and applications. It uses the first row as keys and creates an array of objects.

JSON to YAML Converter

The JSON to YAML Converter translates JSON to YAML format, which is the preferred configuration format for Docker Compose, Kubernetes, GitHub Actions, and many other DevOps tools. YAML's indentation-based syntax is more human-readable than JSON's bracket-heavy format.

YAML to JSON Converter

The YAML to JSON Converter converts YAML configuration files to JSON. Essential when you need to programmatically process YAML configs or integrate with JSON-only APIs.

JSON to XML Converter

The JSON to XML Converter transforms JSON data into well-formed XML documents. While JSON has largely replaced XML for web APIs, XML remains the standard for many enterprise systems, SOAP services, and configuration files.

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Number & Unit Converters

Number Base Converter

The Number Base Converter converts between binary (base-2), octal (base-8), decimal (base-10), and hexadecimal (base-16). Essential for low-level programming, networking, and understanding how computers represent data.

Decimal	Binary	Octal	Hexadecimal
10	1010	12	A
42	101010	52	2A
255	11111111	377	FF
1024	10000000000	2000	400

Temperature Converter

The Temperature Converter converts between Celsius, Fahrenheit, and Kelvin. Beyond basic conversions, it shows the formula used so you can understand the math behind each conversion.

Length / Distance Converter

The Length Converter handles conversions between meters, feet, inches, kilometers, miles, centimeters, millimeters, and more. Supports both metric and imperial systems.

Weight / Mass Converter

The Weight Converter converts between kilograms, pounds, ounces, grams, tons, and other mass units. Includes both metric and imperial measurements.

Data Storage Converter

The Data Storage Converter calculates between bits, bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes. Critical for system administrators, developers, and anyone working with file sizes or bandwidth.

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Date & Time Converters

Unix Timestamp Converter

The Unix Timestamp Converter converts between Unix epoch time (seconds since January 1, 1970) and human-readable dates. This is one of the most frequently needed developer tools — APIs, databases, and logs all use timestamps.

Time Zone Converter

The Time Zone Converter converts times between any two time zones worldwide. Essential for scheduling across distributed teams and understanding when events happen in different regions.

Date Calculator

The Date Calculator adds or subtracts days, weeks, months, or years from any date. It also calculates the difference between two dates in multiple units.

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Code & Markup Converters

Markdown to HTML Converter

The Markdown to HTML Converter renders Markdown syntax into clean HTML. Writers use Markdown for its simplicity, but web pages need HTML. This tool bridges the gap with live preview.

HTML to Markdown Converter

The HTML to Markdown Converter does the reverse — strips HTML tags and converts to clean Markdown. Perfect for migrating web content to documentation sites, GitHub READMEs, or static site generators.

CSS Unit Converter

The CSS Unit Converter converts between px, rem, em, vw, vh, and percentages. Understanding these relationships is crucial for responsive web design.

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Text Encoding Converters

Base64 Encoder / Decoder

The Base64 Encoder/Decoder converts text and binary data to and from Base64 encoding. Used in email (MIME), data URLs, API authentication headers, and more.

URL Encoder / Decoder

The URL Encoder/Decoder percent-encodes special characters for safe URLs. Spaces, ampersands, question marks — any character that has special meaning in a URL gets properly encoded.

HTML Entity Encoder / Decoder

The HTML Entity Encoder converts special HTML characters to entities and back. Prevents XSS vulnerabilities and ensures special characters render correctly in web pages.

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Color Format Converters

HEX to RGB

The HEX to RGB Converter converts hexadecimal color codes (#FF6B35) to RGB values (255, 107, 53). The most common color conversion for web developers.

RGB to HSL

The RGB to HSL Converter translates RGB colors to Hue-Saturation-Lightness format. HSL is more intuitive for design work because you can adjust brightness and vibrancy independently.

HEX to HSL

The HEX to HSL Converter goes directly from hex to HSL — the format increasingly used in CSS custom properties and modern design systems.

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Maximize Your Conversion Workflow

1. Know your target format first — Don't convert blindly. Understand what format your destination system expects
2. Validate after conversion — Use format-specific validators (JSON Validator, XML Validator) to confirm the output is well-formed
3. Chain converters for complex transforms — JSON → CSV → modified in Excel → CSV → JSON is a legitimate workflow
4. Bookmark your most-used converters — If you convert JSON to YAML daily, keep it one click away

Explore the full collection of converter tools and transform data between any format instantly.