Convert 645 from octal to decimal

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Convert 645 from octal to decimal How to convert number 645 from octal to decimal?
Octal to: binary decimal hexadecimal

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Octal number

conversion rule

421

Octal to Decimal

Convert 645₈ to decimal:
645₈ = 421₁₀

octal 645	6	4	5	step 0
convert to	(6*8²) +	(4*8¹) +	(5*8⁰)	step 1
decimal 421 =	384 +	32 +	5	step 2

Octal to decimal conversion table

Octal number	Decimal number
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	7
10	8
11	9
12	10
13	11
14	12
15	13
16	14
17	15
20	16
21	17
22	18
23	19
24	20
25	21
26	22
27	23
30	24
31	25
32	26
33	27
34	28
35	29
36	30
144	100
377	255
454	300
764	500
1750	1000

Convert other numbers:

640 641 642 643 644 645 646 647 650 651 652

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