Earthquake Energy Calculator: How Much Energy Is a Magnitude?
Magnitude numbers look small, but the energy behind them is enormous. This calculator shows that energy in joules and TNT equivalent.
What is the Earthquake Energy Calculator?
Magnitude is logarithmic, so each whole step multiplies the energy roughly thirty-two times. Enter a magnitude and this tool estimates the released energy in joules and its equivalent in tonnes of TNT.
How to use it
- Enter your values in the fields provided.
- Click Estimate Quake Energy.
- Read the result and adjust an input if you want a different outcome.
Worked example
A magnitude 6 earthquake releases about 6.31e13 joules, roughly 15,080 tonnes of TNT equivalent.
How much energy does a magnitude 6 earthquake release?
The Gutenberg-Richter relation gives about 6.31 times 10 to the 13 joules, roughly 15,080 tonnes of TNT equivalent.
Frequently asked questions
What do I enter to get a result?
Fill in every field with your own numbers or choices, then run the tool. Empty number fields count as zero, so check them before you trust the output.
Can I reuse this result elsewhere?
Yes. The result is calculated in your browser from the values you entered, so you can copy the numbers into your own notes or plan.