Decimal Calculator
Convert and inspect a decimal number to decimal, hex, octal, and binary at once. Enter your values, click Calculate, and get the full result with its breakdown — everything is processed on your device, nothing is sent to a server.
All calculations run in your browser. Your data is never sent to our servers.
Example
Example Input
500
Example Output
0x1F4 (0o764)
How to Use
- 1Fill in each input field with the values you want to compute.
- 2If there are choices (units, mode, operation), pick what you need.
- 3Click the Calculate button (or press Ctrl+Enter).
- 4The main result and its breakdown appear in the Result area. Click Copy to copy it.
About the Decimal Calculator
The Decimal Calculator takes a decimal number and shows it in all common bases: decimal, hexadecimal, octal, and binary. Useful when programming, debugging, or working with flags and bitmasks.
It uses BigInt, so even large numbers stay accurate. Everything runs in the browser, no server.
FAQ
Is this Decimal Calculator accurate?
Yes. It uses standard formulas and runs directly in your browser at full JavaScript precision (plus BigInt/decimal.js for large numbers where needed).
Is my data sent to a server?
No. All calculations happen entirely on your device. No values are sent to or stored on our servers.