Inverse Modulo Calculator
Use the inverse modulo calculator whenever you need to determine the multiplicative or additive modular inverses.
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)