ASCII Calculator
Convert between characters and ASCII/byte codes — with hex, octal, and binary. 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
A
Example Output
65 (0x41, 0o101, 0b1000001)
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 ASCII Calculator
The ASCII Calculator works both ways: type a number to see its character, or type text to see each character's code. For each character it shows decimal, hex, octal, and binary values.
Handy for debugging encodings, binary protocols, or understanding the byte representation of a string.
FAQ
Is this ASCII 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.