免费二进制转十进制转换器

将二进制数即时转换为十进制数，免费在线进制转换工具。

Bit 7 (128s)

Bit 6 (64s)

Bit 5 (32s)

Bit 4 (16s)

Bit 3 (8s)

Bit 2 (4s)

Bit 1 (2s)

Bit 0 (1s)

十进制值

公式

Each binary digit (bit) represents a power of 2. From right to left:

Bit 0 = 2^0 = 1

Bit 1 = 2^1 = 2

Bit 2 = 2^2 = 4

Bit 3 = 2^3 = 8

Bit 4 = 2^4 = 16

Bit 5 = 2^5 = 32

Bit 6 = 2^6 = 64

Bit 7 = 2^7 = 128

Multiply each bit by its place value and sum all the results.

Convert binary 00010101 to decimal.

What is binary?

Binary is a base-2 number system that uses only two digits: 0 and 1. It is the fundamental language of computers.

How do I read a binary number?

Read each digit from right to left. Each position represents a power of 2 (1, 2, 4, 8, 16, ...). Add up the values where the digit is 1.

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