Energy Levels of Hydrogen Calculator
⚛ Modern physics. Use the Energy levels of hydrogen formula to find energy, level n: pick the value you want, type the others, and the answer updates as you go.
Energy-3.4 eV
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| Energy | eV |
| Level n | no unit |
Worked example
Find the energy when Level n = 2.
Using En = -(13.6 eV)/n²: Energy = -3.4 eV.
Frequently asked questions
What is the formula for Energy levels of hydrogen?
En = -(13.6 eV)/n².
What do the letters stand for, and what units are used?
Energy in eV, Level n.
How do you calculate energy?
Put the values into En = -(13.6 eV)/n². For example, with Level n = 2, energy = -3.4 eV.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (energy, level n) and fill in the others: it rearranges the formula for you.
