How it works
How to use the OR Calculator
Enter two numbers
Type or paste a value — results update instantly as you type.
Read the results
Every equivalent value is listed, with the most relevant one highlighted.
Copy what you need
Each result has its own copy button.
About the OR Calculator
Bitwise OR: Returns 1 where either bit is 1 — used to set flags. Enter two values in decimal, hex (0x), binary (0b) or octal (0o) and see the result in every base, bit by bit.
Built for developers
Why developers use it
Private by design
Runs 100% in your browser. Nothing you paste is uploaded, logged or stored on a server.
Instant results
Output updates as you type, with precise error locations when something is wrong.
Works offline
Once loaded, the tool keeps working without a connection. Install it as an app if you like.
Free, no sign-up
No accounts, no limits, no watermarks.
FAQ
Frequently asked questions
Is my data uploaded anywhere?
No. Everything runs locally in your browser — nothing you type, paste or open is sent to a server, logged or stored. The tool keeps working offline once the page has loaded.
Keep going
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