Modular Exponentiation Calculator - Free, Instant, In Your Browser
Enter a base, exponent, and modulus to compute base^exponent mod modulus - the core operation behind RSA and other public-key cryptography.
How to use Modular Exponentiation Calculator
- 1Enter the required date(s) and details above.
- 2Click Calculate - Modular Exponentiation Calculator runs instantly, right in your browser.
- 3Read your result below.
Your file is processed in your browser and is never uploaded.
Frequently Asked Questions
What's the formula?
Uses the square-and-multiply method to compute the result without ever forming the (potentially astronomically large) full power - matches the classic worked example 4^13 mod 497 = 445.
Is my data sent to a server?
No - everything runs entirely in your browser with JavaScript. Nothing is uploaded.