Multiplicative Inverse Modulo Calculator

Quickly find the inverse of modulus and learn how to find multiplicative inverse modulo with our easy-to-use calculator. What are you waiting for?

Clear
Modular inverse43 × 4 ≡ 1 (mod 11)
Check1should be 1
GCD of a and m1must be 1 for an inverse to exist
Ordinary reciprocal0.33333333a different thing entirely

The method

find x with a·x ≡ 1 (mod m)