Atom Calculator (Protons)

Calculate the number of protons (Z), also known as the Atomic Number, in an atom by subtracting the number of neutrons from the atomic mass number.

Total protons + neutrons
Neutron Count

How to Use

  1. 1

    Step 1

    Enter the Atomic Mass Number (A) of the isotope.

  2. 2

    Step 2

    Enter the Number of Neutrons (N).

  3. 3

    Step 3

    Click Calculate Protons to find the number of protons (Z), identifying the element.

Frequently Asked Questions

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