Base64 Encoder

Encode any text to Base64 — UTF-8 safe, including emoji and Bangla.

Processed locally – files never leave your device

Text to encode

Encoded in your browser using UTF-8, so non-English text survives the round trip.

URL-safe output (uses - and _ instead of + and /, no padding)

Base64 output

Next: try Base64 Decoder — Decode Base64 to text.

Need to turn text into Base64 — for a data URI, an API token, an email header or a config file? This free Base64 encoder converts your text in your browser, and it handles Unicode properly: emoji, accented letters and Bangla text all survive the round trip, which older copy-paste encoders often corrupt.

You can switch to the URL-safe variant when the output has to live inside a web address. To get your original text back afterwards, use the companion Base64 Decoder. If your text is a structured payload, the JSON Formatter will make it readable first.

How to use

Type or paste your text into the input box above.
Choose Standard Base64, or switch on URL-safe if the result goes into a URL.
Click Encode. The Base64 output appears below, ready to copy.
Use Copy to copy the result, or Clear to encode something else.

Why use Toolsvine

Many online encoders mishandle non-English text because they feed raw Unicode into functions that only understand Latin characters. Toolsvine encodes proper UTF-8 bytes first, so “héllo 🌍” and “আমি” encode and decode exactly. It runs locally, so private text never leaves your device.

How Base64 works

Base64 turns any bytes into plain text using an alphabet of 64 safe characters: A–Z, a–z, 0–9, plus (+) and slash (/). It works in groups of three bytes: each group of 24 bits is split into four 6-bit chunks, and each chunk becomes one character. When the input is not a multiple of three bytes, equals signs (=) pad the end so the output length stays a multiple of four.

Why the output is longer

Three bytes become four characters, so Base64 output is about 33% larger than the input. That is the price of making binary data safe to paste into text-only places such as JSON, XML, email headers and URLs.

Standard vs URL-safe

Variant	Characters used	Padding
Standard	A–Z, a–z, 0–9, +, /	= kept
URL-safe	A–Z, a–z, 0–9, -, _	= removed

Standard Base64 contains + and /, which have special meanings in URLs, so the URL-safe variant swaps them for a hyphen (-) and underscore (_), and drops the padding. The two variants encode the same bytes — only the last few characters differ.

Base64 is not encryption

Anyone can decode Base64, so never use it to hide a password or a secret. It is an encoding — a way to represent data — not a lock. For real secrets, use a password manager and a strong password instead.

Frequently asked questions

Is Base64 encryption?

No. Base64 is an encoding, not encryption — anyone can decode it instantly. It only makes binary or special data safe to carry as plain text. Never use it to protect a password or secret.

Why did my emoji turn into garbage on another site?

Many old encoders pass Unicode text straight into functions that only handle Latin characters, which corrupts anything beyond basic English. This tool first converts your text to UTF-8 bytes, so emoji and Bangla survive intact.

What is URL-safe Base64?

A variant that replaces + with - and / with _, and drops the = padding. Use it when the encoded text goes inside a URL or filename, where + and / would be misread.

How much bigger does Base64 make my text?

About 33% bigger: every 3 bytes become 4 characters. Short text grows by a few characters; a 3 KB file becomes roughly 4 KB of Base64.

Is my text uploaded anywhere?

No. Encoding runs entirely in your browser. Your text never leaves your device, and the tool works offline after the page loads.

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