Hydrogen
Number of Protons: 1; Number of Neutrons: 0
Atomic Mass (amu): 1.007276 amu
Atomic Mass Calculator
Chemistry0.0(0)
Calculates the atomic mass of an atom based on the number of protons and neutrons, displaying the result in atomic mass units (amu)
More tools:Science & Lab Calculators
How To Use
How to use this calculator
Start with your values, or try a preset.
Step 1
Enter Number of Protons and Number of Neutrons in the units shown.
Step 2
Read Atomic Mass (amu) in the results panel. Results update as you change the inputs.
Step 3
Choose a preset to load an example, then adjust the values for your situation.
Worked Examples
Example calculations
See the inputs and their calculated results.
Carbon-12
Number of Protons: 6; Number of Neutrons: 6
Atomic Mass (amu): 12.095646 amu
Oxygen-16
Number of Protons: 8; Number of Neutrons: 8
Atomic Mass (amu): 16.127528 amu
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