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Online Base64 Encoder: Encode Text or File to Base64

Encode data with ease, ensure compatibility, and simplify communication. Discover the power of the Online Base64 Encoder Tool, your one-stop solution for quick and secure data transformation. Convert text and files to Base64 format quickly and easily.

Base64 Encoder

Input Type

Text File

Settings

What is Base64?

Base64 is a binary-to-text encoding system that is often used to encode binary data, particularly when such data needs to be saved and transported across text-based medium. This encoding helps to ensure that the data remains unchanged throughout transit.

Base64 is widely used in a variety of applications, including email via MIME and storing complicated data in XML or JSON.

The binary data is initially separated into 6-bit blocks in Base64 encoding. These blocks are then represented in ASCII standard as 64 separate printable characters: A-Z, a-z, 0-9, +, and /. This is why it is known as “Base64”.

What is Base64 Encoding?

Encoding, in general, refers to the process of converting data from one format to another. Base64 encoding is achieved by representing binary data with a set of 64 different ASCII characters. This encoding is particularly useful when data needs to be exchanged between systems that do not natively support binary data.

Base64 Encoding in 4 simple steps - Infographic

How Does Base64 Encoding Work?

Base64 encoding works by converting binary data into a string of ASCII characters. Here’s a step-by-step explanation:

  1. Divide the input into octets: The input data is divided into groups of 8-bit bytes (octets). If the total number of bits is not a multiple of 8, padding bits are added.
  2. Convert to 6-bit blocks: Each 8-bit byte is then divided into two 6-bit blocks. This is because Base64 represents data in 6 bits (thus the ‘64’ in Base64: 2^6 = 64).
  3. Map to Base64 characters: Each 6-bit block is then mapped to a specific Base64 character. There are 64 possible characters: A-Z, a-z, 0-9, +, and /.
  4. Add padding if necessary: If the original data was not a multiple of 3 bytes, then padding characters (=) are added to the output to make it a multiple of 4 characters.

Why Use Base64 Encoding?

Base64 encoding is used to ensure text-based system compatibility and to prevent data corruption during transmission.

What is the Purpose of our Free Online Base64 Encoder?

Without the need for software installation or coding expertise, our free online Base64 encoder provides a user-friendly platform for converting text or file into its Base64-encoded equivalent.

How Do I Use the Free Online Base64 Encoder?

  1. In the input field, enter the text you want to encode or upload a file.
  2. Customise the settings, you can set each line to be encoded separately or the format of the output result.
  3. No need to press a button, the Base64 result will automatically appear in the Output field.
  4. If you want, you can copy the result using the Copy button.

Is Base64 Encoding An Encryption?

It should be noted that Base64 encoding is not a type of encryption. While it changes the way data is represented, it does not provide security or confidentiality. The goal of Base64 encoding is to ensure data compatibility and to avoid problems with binary data transmission.

Why Base64 is not an encryption? Infographic with 5 reasons

Is It A Base64 Encrypter?

It’s important to note that Base64 isn’t a way to encrypt or secure data. It’s simply a way to represent binary data in an ASCII string format.

Is It Secure To Use Your Base64 Converter?

Absolutely. Our program operates entirely on the client side, which means all the conversion processes occur within your browser. No data is sent to our servers, ensuring that your information remains under your control and confidential throughout the conversion process.

Base64 Characters and Table

Uppercase letters (A-Z), lowercase letters (a-z), digits (0-9), and two additional characters, typically “+” and “/”, comprise the set of 64 ASCII characters used in Base64 encoding. When the length of the binary data is not a multiple of three bytes, the “=” character is also used for padding.

ValueCharacterBinary Value
0A000000
1B000001
2C000010
3D000011
4E000100
5F000101
6G000110
7H000111
8I001000
9J001001
10K001010
11L001011
12M001100
13N001101
14O001110
15P001111
16Q010000
17R010001
18S010010
19T010011
20U010100
21V010101
22W010110
23X010111
24Y011000
25Z011001
26a011010
27b011011
28c011100
29d011101
30e011110
31f011111
32g100000
33h100001
34i100010
35j100011
36k100100
37l100101
38m100110
39n100111
40o101000
41p101001
42q101010
43r101011
44s101100
45t101101
46u101110
47v101111
48w110000
49x110001
50y110010
51z110011
520110100
531110101
542110110
553110111
564111000
575111001
586111010
597111011
608111100
619111101
62+111110
63/111111