Online Base64 Decoder

About this tool

This tool helps you encode your text to Base64. You can type/paste your text into the text box or upload a text file to encode.

Additionally, you can share your data to other people via TheDevBand by the "share" function.

We also provide: Base64 Encoder, Image To Base64 Converter

About Base64

Base64 is a group of similar binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. The term Base64 originates from a specific MIME content transfer encoding.

Base64-encoded data takes about 33% more space than the original data.

Each base64 digit represents exactly 6 bits of data. Three 8-bit bytes (i.e., a total of 24 bits) can therefore be represented by four 6-bit base64 digits.

The particular set of 64 characters chosen to represent the 64 place-values for the base varies between implementations. The general strategy is to choose 64 characters that are both members of a subset common to most encodings, and also printable. This combination leaves the data unlikely to be modified in transit through information systems, such as email, that were traditionally not 8-bit clean.[1] For example, MIME's Base64 implementation uses A–Z, a–z, and 0–9 for the first 62 values. Other variations share this property but differ in the symbols chosen for the last two values; an example is UTF-7.

The earliest instances of this type of encoding were created for dialup communication between systems running the same OS — e.g., uuencode for UNIX, BinHex for the TRS-80 (later adapted for the Macintosh) — and could therefore make more assumptions about what characters were safe to use. For instance, uuencode uses uppercase letters, digits, and many punctuation characters, but no lowercase.

Source: Wikipedia.

PHP - Decodes data encoded with MIME base64

echo base64_decode('QSBzdHJpbmc=');

Python - Base64 Decoding

import base64
data = base64.b64decode(b'QSBzdHJpbmc=')

Java 8 - Base64 Decoding

import java.util.Base64;
public class Application {
  public static void main(String args[]) {
    byte[] base64decodedBytes = Base64.getDecoder()