Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to text — UTF-8 safe, with a URL-safe option.
Result
How to use
- 1
Type or paste your text (or Base64 string).
- 2
Choose Encode or Decode — tick URL-safe for JWTs and URLs.
- 3
Copy the result, or press Swap to reverse it.
Questions
Is Base64 encryption?
No. Base64 only changes how data is written so it can travel safely as text. Anyone can decode it, so never use it to hide passwords.
Does it handle Hindi, Tamil and emoji?
Yes. Text is converted to UTF-8 bytes before encoding, so any language and emoji decode back exactly.
What is URL-safe Base64?
A variant that uses - and _ instead of + and / and drops the = padding, so the result can be used in URLs, file names and JWTs.
About this Base64 tool
Base64 Encoder & Decoder — Encode text to Base64 or decode Base64 back to text — UTF-8 safe, with a URL-safe option. It is one of 200 free tools on namasivayam.in, made by software engineer Namasivayam Vadivelan for everyday use in India.
Everything is calculated instantly in your browser: nothing you type or upload is sent to any server, there is no sign-up, and it works on mobile and desktop. Type or paste your text (or Base64 string).
Related reading
Articles that go with this tool
How AI Chatbots Actually Work — Explained Simply, Without the Jargon
AI chatbots can write emails, explain code and plan trips. But how do they really work, why do they sometimes confidently get things wrong, and how should you use them wisely?
Passkeys Explained: The Simple, Safer Way to Log In Without Passwords
Google, Apple and Microsoft now let you sign in with passkeys instead of passwords. What a passkey is, why it can’t be phished, and how to set one up in five minutes.
Public Wi-Fi Safety: 8 Rules Before You Connect at Airports, Cafés and Hotels
Free Wi-Fi is convenient, but it can expose your data to strangers on the same network. Eight simple rules to stay safe on airport, café, railway and hotel Wi-Fi.
Related tools
More developer tools you may like
Results are estimates to help you plan. They are not financial, tax or medical advice.