Base64 Encode - Online Tool

Base64 Encode Encode Base64 string from 'base64 encoder' to 'YmFzZTY0IGRlY29kZXI=' Input

Base64

The term Base64 is coming from a certain MIME content transfer encoding. Basically, Base64 is a collection of related encoding designs which represent the binary information in ASCII format by converting it into a base64 representation.

Types of URI characters

Base64 encoding schemes are generally used when there is a need to encode binary information that needs to be stored and transferred over media that are developed to deal with textual information. This guarantees that the data stays unchanged without modification during transfer. Base64 is generally used in a number of applications including electronic mail via MIME, and keeping complex information in XML.

The specific set of characters chosen for the 64 characters needed for the base can vary among implementations. The common concept is to select a set of 64 characters that is both part of a subset typical to most encodings. This mixture leaves the data impossible to be altered in transportation thru information systems, such as electronic mail, that were typically not 8-bit clean. The Base64 implementation in MIME uses a-z, A-Z and 0-9 for the first 62 values. Other Base64 variations share the same property but they use different symbols in the last two values.

Base64 table from RFC 4648

Index	Binary	Char	Index	Binary	Char	Index	Binary	Char	Index	Binary	Char
0	000000	A	16	010000	Q	32	100000	g	48	110000	w
1	000001	B	17	010001	R	33	100001	h	49	110001	x
2	000010	C	18	010010	S	34	100010	i	50	110010	y
3	000011	D	19	010011	T	35	100011	j	51	110011	z
4	000100	E	20	010100	U	36	100100	k	52	110100	0
5	000101	F	21	010101	V	37	100101	l	53	110101	1
6	000110	G	22	010110	W	38	100110	m	54	110110	2
7	000111	H	23	010111	X	39	100111	n	55	110111	3
8	001000	I	24	011000	Y	40	101000	o	56	111000	4
9	001001	J	25	011001	Z	41	101001	p	57	111001	5
10	001010	K	26	011010	a	42	101010	q	58	111010	6
11	001011	L	27	011011	b	43	101011	r	59	111011	7
12	001100	M	28	011100	c	44	101100	s	60	111100	8
13	001101	N	29	011101	d	45	101101	t	61	111101	9
14	001110	O	30	011110	e	46	101110	u	62	111110	+
15	001111	P	31	011111	f	47	101111	v	63	111111	/
Padding		=

Source: Base64 on Wikipedia

More tools

• Image to Base64
• File to Base64
• PDF to Base64
• Base32 Encode

Base64 Encode functions

• PHP base64_encode()
• Python base64.b64encode()
• Perl encode_base64()
• VB System.Convert.ToBase64String()
• C# System.Convert.ToBase64String()
• Java encode()
• Golang EncodeToString()
• Ruby Base64.encode64()
• MySQL to_base64()
• Dojo dojox.encoding.base64.encode()
• PostgreSQL encode()
• Linux base64 encode
• JavaScript btoa