Inspect Bit Patterns and Flags

Convert numbers to binary to inspect individual bits, bitmasks, and flag combinations.

Không cần đăng nhập

Input base:

Decimal number

Quick values

Bit Operations tips

⚙️

Bitmasks use individual bits as boolean flags. Convert a decimal mask (e.g. 12 = 0b1100) to binary to see which bits are set.

💡

Unix permissions: 7 = 0b111 (rwx), 5 = 0b101 (r-x), 4 = 0b100 (r--). Convert each permission digit to see what it means.

🔢

Power of 2 check: a number is a power of 2 if its binary representation has exactly one 1 bit. The grouped binary display makes this obvious.

📊

Signed vs unsigned: 255 in 8-bit unsigned = 0xFF. As a signed byte, values 128–255 are negative. The bit pattern (11111111) is the same.

Nhập liệu

Enter your data into the tool above. Everything stays local to your browser.

Xử lý

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

Tải xuống

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

✓Hoàn toàn miễn phí — không có chi phí ẩn, mãi mãi

✓Không cần tài khoản, email hoặc đăng nhập

✓Tệp không bao giờ rời khỏi thiết bị của bạn

✓Không có giới hạn kích thước tệp nào

✓Không có hình mờ trên bất kỳ đầu ra nào

Convert Numbers for Programming

Convert between binary, octal, decimal, and hex wh

Convert Numbers for Networking

Convert subnet masks, port numbers, and IP address

Number Systems for Computer Science

Learn and verify binary, octal, hex conversions —

Decode Hex Dumps and Debug Logs

Decode hexadecimal values from crash reports, memo