Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 back to text instantly.
Fast Base64 encoding/decoding tool. Supports UTF-8 characters, large text files, and URL-safe Base64. Perfect for API testing and data transmission.
Understanding the tool
About Base64 Encoder/Decoder
Base64 is an encoding method that represents binary data using a limited set of text characters. It is commonly seen when data needs to travel through text-based systems.
How to use this tool
Enter text to encode it, or provide Base64 text to decode it. Base64 is an encoding format, not encryption, so it should not be treated as a way to hide confidential information.
A simple example
Before you use the result
Check that you have entered the values in the correct units and that the question you are answering matches the tool you selected. A calculator can produce a precise answer to the wrong question just as easily as the right one.
For important decisions
Use the result as a helpful calculation or estimate. Where money, tax, contracts, compliance or other high-impact decisions are involved, confirm the result against the relevant official information.
Features
- Encode/Decode modes
- URL-safe option
- File upload support
- Copy output button
Frequently asked questions
Is Base64 encryption?
No. Base64 is encoding and can be decoded by anyone who has the encoded value.
Does Base64 reduce file size?
Usually not. Base64 commonly increases the size of binary data when represented as text.
KingToolsKit provides general-purpose tools and information. Check important results independently when they affect financial, legal, medical or other high-impact decisions.