Base64 Decode & Encode Online

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to encode data that needs to be stored or transferred over media that are designed to deal with textual data.

Base64 encoding is essential when you need to embed binary data (like images, files, or encrypted data) into text-based formats such as JSON, XML, or HTML. It ensures that the data can be safely transmitted without corruption.

How to Encode and Decode Base64?

Base64 encoding and decoding can be done using various methods depending on your programming language or tool. Here are the most common approaches:

// Encoding
const text = "Hello World";
const encoded = btoa(text);
console.log(encoded); // "SGVsbG8gV29ybGQ="

// Decoding
const decoded = atob(encoded);
console.log(decoded); // "Hello World"

import base64

# Encoding
text = "Hello World"
encoded = base64.b64encode(text.encode()).decode()
print(encoded)  # "SGVsbG8gV29ybGQ="

# Decoding
decoded = base64.b64decode(encoded).decode()
print(decoded)  # "Hello World"

# Linux/Mac - Encoding
echo -n "Hello World" | base64

# Linux/Mac - Decoding
echo "SGVsbG8gV29ybGQ=" | base64 -d

# Windows PowerShell - Encoding
[Convert]::ToBase64String(
    [Text.Encoding]::UTF8.GetBytes("Hello World")
)

# Windows PowerShell - Decoding
[Text.Encoding]::UTF8.GetString(
    [Convert]::FromBase64String("SGVsbG8gV29ybGQ=")
)

How to Use the Base64 Decode and Encode Tool?

Our Base64 encoder and decoder tool makes it incredibly easy to encode and decode Base64 strings. Follow these simple steps: