Converter Tools

Encode, decode, and convert between different formats

14 free tools

Base64 Encoder / DecoderNEW

Encode text to Base64 or decode Base64 to text instantly. Supports UTF-8.

URL Encoder / DecoderNEW

Encode or decode URLs and URI components. Handle special characters safely.

HTML Entity Encoder / DecoderNEW

Encode special characters to HTML entities or decode them back to text.

Markdown to HTML ConverterNEW

Convert Markdown to clean HTML with live preview. Supports GitHub Flavored Markdown.

Unix Timestamp ConverterNEW

Convert between Unix timestamps and human-readable dates. Current timestamp display.

JSON to CSV ConverterNEW

Convert JSON arrays to CSV format instantly. Flatten nested objects, extract headers, and download CSV files.

Number Base ConverterNEW

Convert numbers between binary, octal, decimal, and hexadecimal instantly. Real-time conversion with all bases displayed.

JSON to YAML ConverterNEW

Convert JSON to YAML and YAML to JSON instantly. Bidirectional converter with syntax validation and formatting.

CSV to JSON ConverterNEW

Convert CSV data to JSON array format. Auto-detect delimiters, handle quoted fields, and preview data as a table.

Binary Text ConverterNEW

Convert text to binary and binary back to text with support for ASCII and Unicode encoding.

Morse Code TranslatorNEW

Translate text to Morse code and Morse code back to text with audio playback support.

String Encoder/DecoderNEW

Encode and decode strings in multiple formats including Base64, URL, HTML entities, and Unicode.

HTML Entity EncoderNEW

Encode special characters to HTML entities and decode entities back to readable characters.

Text to Binary ConverterNEW

Convert plain text to binary representation and decode binary strings back to readable text.

Free Online Format Converters for Encoding, Decoding, and Data Transformation

Data format conversion is one of the most common tasks in web development, system administration, and data processing. Whether you need to encode a file as Base64 for embedding in HTML, decode a URL parameter, convert between JSON and CSV for spreadsheet analysis, or transform Markdown into HTML, our free converter tools handle it all instantly in your browser with no data sent to any server.

Base64 encoding and decoding is essential for embedding binary data in text-based formats. Our Base64 tool converts text and files to Base64-encoded strings and back again. This is commonly used for embedding images directly in CSS or HTML (data URIs), encoding email attachments, and transmitting binary data through text-only protocols. The tool supports both standard Base64 and URL-safe Base64 variants.

URL encoding (also known as percent-encoding) converts special characters into a format safe for transmission in URLs. Spaces become %20, ampersands become %26, and other reserved characters are properly escaped. Our URL encoder/decoder handles full URLs as well as individual query parameters, making it indispensable for building API requests, constructing redirect URLs, and debugging query string issues.

Converting between structured data formats is a daily need for developers and analysts. Our JSON to CSV converter flattens nested JSON objects into tabular CSV format suitable for spreadsheet applications like Excel and Google Sheets. The reverse conversion transforms CSV data back into structured JSON. We also support JSON to YAML conversion for configuration file management, particularly useful when working with Docker, Kubernetes, and other DevOps tools that prefer YAML syntax.

The Markdown to HTML converter transforms Markdown-formatted text into clean HTML, supporting all standard Markdown features including headings, lists, links, images, code blocks, tables, and emphasis. This is ideal for previewing README files, blog post drafts, and documentation before publishing. Our timestamp converter handles Unix epoch timestamps, converting between human-readable dates and numeric timestamps in seconds or milliseconds. It supports multiple time zones and date formats, making it essential for debugging logs, API responses, and scheduled events across distributed systems.

Frequently Asked Questions

What format conversions are supported?
We support Base64 encoding/decoding, URL encoding/decoding (percent-encoding), HTML entity encoding/decoding, Markdown to HTML conversion, JSON to CSV and CSV to JSON conversion, JSON to YAML and YAML to JSON conversion, and Unix timestamp to date conversion. All conversions happen instantly in your browser.
How do I encode Base64?
Paste your text or upload a file into the Base64 encoder and click encode. The tool converts your input into a Base64-encoded string that can be safely embedded in HTML, CSS, JSON, or XML documents. For decoding, paste a Base64 string and the original content is restored. Both standard and URL-safe Base64 variants are supported.
Can I convert JSON to CSV?
Yes. Our JSON to CSV converter takes an array of JSON objects and flattens them into a CSV table with headers derived from the object keys. Nested objects are handled by creating dot-notation column names. The resulting CSV can be downloaded or copied for use in Excel, Google Sheets, or any spreadsheet application.
What is URL encoding?
URL encoding (percent-encoding) replaces unsafe or reserved characters in URLs with a percent sign followed by their hexadecimal value. For example, spaces become %20 and ampersands become %26. This ensures URLs are transmitted correctly by browsers and servers. Our tool encodes and decodes both full URLs and individual parameter values.
How do timestamp converters work?
Unix timestamps represent the number of seconds (or milliseconds) since January 1, 1970 UTC. Our converter translates between these numeric timestamps and human-readable date/time formats. Enter a timestamp to see the corresponding date, or enter a date to get the timestamp. The tool supports multiple time zones and output formats for debugging logs and API data.