Conversor de Binário para Decimal Grátis

Converta números binários para decimal de forma instantânea. Ferramenta gratuita de conversão numérica.

Valor Decimal

21

Formula

Binary to Decimal Converter

How It Works

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.

    Exemplo Resolvido

    Convert binary 00010101 to decimal.

    1. 010×128 + 0×64 + 0×32 + 1×16 + 0×8 + 1×4 + 0×2 + 1×1
    2. 02= 0 + 0 + 0 + 16 + 0 + 4 + 0 + 1
    3. 03= 21 in decimal

    Perguntas Frequentes

    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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