Inverse Modulo
Result
Calculated result
4
Based on the values entered.
↗ Math
Inverse Modulo — free online calculator.
Formula
Modular Multiplicative Inverse: a × a⁻¹ ≡ 1 (mod m); Found via Extended Euclidean Algorithm
- Inverse Modulo calculates its result from a, Modulus. It uses the formula Modular Multiplicative Inverse: a × a⁻¹ ≡ 1 (mod m); Found via Extended Euclidean Algorithm. Change any input to recalculate the result instantly.
- The main inputs are a, Modulus. Enter them in the units and format shown in the calculator.
- Keep comparable quantities in compatible units whenever the formula combines or compares them.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Inverse Modulo
Inputs
- a: 3
- Modulus: 11
Using a = 3, Modulus = 11, the calculated result is 4.
Sample result: Calculating…
Frequently asked questions
What does the Inverse Modulo calculate?
Inverse Modulo — free online calculator.
Which values should I enter?
Enter a, Modulus using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: Modular Multiplicative Inverse: a × a⁻¹ ≡ 1 (mod m); Found via Extended Euclidean Algorithm.
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.