Binary to Decimal Converter
Convert binary numbers to decimal and decimal to binary instantly. Also shows hexadecimal and octal representations. Free browser-based tool.
How to Use
- 1 Select Binary → Decimal to convert a binary number to decimal, or Decimal → Binary for the reverse
- 2 Enter your binary number (e.g. 1010) or decimal number (e.g. 10)
- 3 Click Convert to see the result in decimal, hexadecimal, and octal
Use Cases
Convert between binary flags, decimal values, and hex representations when working with low-level code or bitwise operations.
Practice number base conversions to strengthen your understanding of how computers represent integers internally.
Convert binary subnet masks and IP address components to decimal for network configuration and troubleshooting.
FAQ
Multiply each bit by its positional power of 2 and sum the results. For example, 1010 = 1×8 + 0×4 + 1×2 + 0×1 = 10.
This tool handles standard JavaScript integers (up to 2^53 - 1 = 9,007,199,254,740,991), which covers practical use cases.
Each hex digit represents exactly 4 binary bits, making hex a compact way to write binary values. For example, 11111111 binary = FF hex.
Related Tools
A/B Test Calculator
Check if your A/B test results are statistically significant. Calculates p-value, Z-score, uplift, and statistical power. Free.
Open →A/B Test Sample Size Calculator
Calculate the sample size needed per variation for a statistically valid A/B test. Set confidence level, power, baseline rate and MDE. Free.
Open →ACOS Calculator
Calculate your Amazon ACOS, ROAS, and break-even ACOS instantly. Free tool for Amazon sellers to measure ad efficiency and profitability.
Open →