Conversion of
Number Systems

Welcome to our Number System Conversion tool. With these calculators, you can effortlessly convert numbers between popular number systems, including Binary, Octal, Decimal and Hexadecimal.

From

Common Conversions : Decimal to Hex . Hex to Decimal . Decimal to Binary . Binary to Decimal

Popular Numeral Systems

Numeral System	Digits in Numeral System
Binary (Base 2)	0	1
Octal (Base 8)	0	1	2	3	4	5	6	7
Decimal (Base 10)	0	1	2	3	4	5	6	7	8	9
Hexadecimal (Base 16)	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F

Binary Number System (Base 2)

A binary number system represents a number in terms of only two numerals, i.e., 0 (zero) and 1 (one). In the word "binary", "bi" means "two". Binary numbers are represented with 2 at their base, for example 1010101₂.

Octal Number System (Base 8)

Octal number system(Oct) has a base of eight and uses combinations of numerals 0 to 7 to represent any number. 12₈ is an example of Octal number equal to decimal 10.

Decimal Number System (Base 10)

Decimal number is the most commonly used number system. It is a base 10 number system, uses combinations of numerals 0 to 9 to represent any number. It is widely used in everyday life for representing and manipulating numbers in many cultures and scientific applications.

Hexadecimal Number System (Base 16)

Hexadecimal Number System is a base 16 number system, uses combinations of numerals 0 to 9 and alphabetic characters A to F to represent any number. Hexadecimal numbers are represented with 16 at their base, for example 1AF₁₆.

Decimal, Octal, Hexadecimal, Binary Conversion Chart Table

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Dec	Oct	Hex	Bin
0	0	0	0
1	1	1	1
2	2	2	10
3	3	3	11
4	4	4	100
5	5	5	101
6	6	6	110
7	7	7	111
8	10	8	1000
9	11	9	1001
10	12	A	1010
11	13	B	1011
12	14	C	1100
13	15	D	1101
14	16	E	1110
15	17	F	1111
16	20	10	10000
17	21	11	10001
18	22	12	10010
19	23	13	10011
20	24	14	10100
21	25	15	10101
22	26	16	10110
23	27	17	10111
24	30	18	11000
25	31	19	11001
26	32	1A	11010
27	33	1B	11011
28	34	1C	11100
29	35	1D	11101
30	36	1E	11110
31	37	1F	11111
32	40	20	100000
33	41	21	100001
34	42	22	100010
35	43	23	100011
36	44	24	100100
37	45	25	100101
38	46	26	100110
39	47	27	100111
40	50	28	101000
41	51	29	101001
42	52	2A	101010
43	53	2B	101011
44	54	2C	101100
45	55	2D	101101
46	56	2E	101110
47	57	2F	101111
48	60	30	110000
49	61	31	110001
50	62	32	110010
51	63	33	110011
52	64	34	110100
53	65	35	110101
54	66	36	110110
55	67	37	110111
56	70	38	111000
57	71	39	111001
58	72	3A	111010
59	73	3B	111011
60	74	3C	111100
61	75	3D	111101
62	76	3E	111110
63	77	3F	111111

Dec	Oct	Hex	Bin
64	100	40	1000000
65	101	41	1000001
66	102	42	1000010
67	103	43	1000011
68	104	44	1000100
69	105	45	1000101
70	106	46	1000110
71	107	47	1000111
72	110	48	1001000
73	111	49	1001001
74	112	4A	1001010
75	113	4B	1001011
76	114	4C	1001100
77	115	4D	1001101
78	116	4E	1001110
79	117	4F	1001111
80	120	50	1010000
81	121	51	1010001
82	122	52	1010010
83	123	53	1010011
84	124	54	1010100
85	125	55	1010101
86	126	56	1010110
87	127	57	1010111
88	130	58	1011000
89	131	59	1011001
90	132	5A	1011010
91	133	5B	1011011
92	134	5C	1011100
93	135	5D	1011101
94	136	5E	1011110
95	137	5F	1011111
96	140	60	1100000
97	141	61	1100001
98	142	62	1100010
99	143	63	1100011
100	144	64	1100100
101	145	65	1100101
102	146	66	1100110
103	147	67	1100111
104	150	68	1101000
105	151	69	1101001
106	152	6A	1101010
107	153	6B	1101011
108	154	6C	1101100
109	155	6D	1101101
110	156	6E	1101110
111	157	6F	1101111
112	160	70	1110000
113	161	71	1110001
114	162	72	1110010
115	163	73	1110011
116	164	74	1110100
117	165	75	1110101
118	166	76	1110110
119	167	77	1110111
120	170	78	1111000
121	171	79	1111001
122	172	7A	1111010
123	173	7B	1111011
124	174	7C	1111100
125	175	7D	1111101
126	176	7E	1111110
127	177	7F	1111111

Dec	Oct	Hex	Bin
128	200	80	10000000
129	201	81	10000001
130	202	82	10000010
131	203	83	10000011
132	204	84	10000100
133	205	85	10000101
134	206	86	10000110
135	207	87	10000111
136	210	88	10001000
137	211	89	10001001
138	212	8A	10001010
139	213	8B	10001011
140	214	8C	10001100
141	215	8D	10001101
142	216	8E	10001110
143	217	8F	10001111
144	220	90	10010000
145	221	91	10010001
146	222	92	10010010
147	223	93	10010011
148	224	94	10010100
149	225	95	10010101
150	226	96	10010110
151	227	97	10010111
152	230	98	10011000
153	231	99	10011001
154	232	9A	10011010
155	233	9B	10011011
156	234	9C	10011100
157	235	9D	10011101
158	236	9E	10011110
159	237	9F	10011111
160	240	A0	10100000
161	241	A1	10100001
162	242	A2	10100010
163	243	A3	10100011
164	244	A4	10100100
165	245	A5	10100101
166	246	A6	10100110
167	247	A7	10100111
168	250	A8	10101000
169	251	A9	10101001
170	252	AA	10101010
171	253	AB	10101011
172	254	AC	10101100
173	255	AD	10101101
174	256	AE	10101110
175	257	AF	10101111
176	260	B0	10110000
177	261	B1	10110001
178	262	B2	10110010
179	263	B3	10110011
180	264	B4	10110100
181	265	B5	10110101
182	266	B6	10110110
183	267	B7	10110111
184	270	B8	10111000
185	271	B9	10111001
186	272	BA	10111010
187	273	BB	10111011
188	274	BC	10111100
189	275	BD	10111101
190	276	BE	10111110
191	277	BF	10111111

Dec	Oct	Hex	Bin
192	300	C0	11000000
193	301	C1	11000001
194	302	C2	11000010
195	303	C3	11000011
196	304	C4	11000100
197	305	C5	11000101
198	306	C6	11000110
199	307	C7	11000111
200	310	C8	11001000
201	311	C9	11001001
202	312	CA	11001010
203	313	CB	11001011
204	314	CC	11001100
205	315	CD	11001101
206	316	CE	11001110
207	317	CF	11001111
208	320	D0	11010000
209	321	D1	11010001
210	322	D2	11010010
211	323	D3	11010011
212	324	D4	11010100
213	325	D5	11010101
214	326	D6	11010110
215	327	D7	11010111
216	330	D8	11011000
217	331	D9	11011001
218	332	DA	11011010
219	333	DB	11011011
220	334	DC	11011100
221	335	DD	11011101
222	336	DE	11011110
223	337	DF	11011111
224	340	E0	11100000
225	341	E1	11100001
226	342	E2	11100010
227	343	E3	11100011
228	344	E4	11100100
229	345	E5	11100101
230	346	E6	11100110
231	347	E7	11100111
232	350	E8	11101000
233	351	E9	11101001
234	352	EA	11101010
235	353	EB	11101011
236	354	EC	11101100
237	355	ED	11101101
238	356	EE	11101110
239	357	EF	11101111
240	360	F0	11110000
241	361	F1	11110001
242	362	F2	11110010
243	363	F3	11110011
244	364	F4	11110100
245	365	F5	11110101
246	366	F6	11110110
247	367	F7	11110111
248	370	F8	11111000
249	371	F9	11111001
250	372	FA	11111010
251	373	FB	11111011
252	374	FC	11111100
253	375	FD	11111101
254	376	FE	11111110
255	377	FF	11111111

Conversion ofNumber Systems

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