Earthquake Energy Calculator
Enter an earthquake magnitude to estimate its released energy in joules, TNT equivalent, Hiroshima bomb equivalent, lightning bolt equivalent, and food calories.
E = energy in joules, M = earthquake magnitude
Understanding the Results
Energy Released
Total energy released by the earthquake, shown in joules.
TNT Equivalent
Compares earthquake energy with TNT explosive energy.
Hiroshima Bomb Equivalent
Shows how many Hiroshima-sized atomic bombs would release similar energy.
Lightning Bolt Equivalent
Compares earthquake energy with lightning strikes.
Food Calorie Equivalent
Converts earthquake energy into food calories for easier understanding.
Magnitude Scale Note
Each 1.0 increase in magnitude releases about 31.6× more energy.
Earthquake Magnitude and Energy Comparison Table
| Magnitude | Type of Earthquake | Energy Meaning |
|---|---|---|
| 1.0 | Micro earthquake | Usually not felt; recorded only by sensitive instruments. |
| 2.0 | Very minor earthquake | Usually not felt, but may be recorded by seismographs. |
| 3.0 | Minor earthquake | May be lightly felt near the epicenter. |
| 4.0 | Light earthquake | Often felt, but usually causes little or no damage. |
| 5.0 | Moderate earthquake | Can cause local damage near the epicenter. |
| 6.0 | Strong earthquake | Can cause serious shaking and structural damage. |
| 7.0 | Major earthquake | Can cause severe damage over a wider area. |
| 8.0 | Great earthquake | Releases enormous energy and can cause major disasters. |
| 9.0 | Extreme megathrust earthquake | Rare, historic-scale earthquake with massive energy release. |
| 10.0 | Theoretical extreme earthquake | Extremely unlikely; would release extraordinary seismic energy. |
Frequently Asked Questions
Earthquake energy is estimated using the formula E = 10^(1.5M + 4.8), where E is energy in joules and M is earthquake magnitude.
Earthquake energy is usually measured in joules. This calculator also shows TNT equivalent, Hiroshima bomb equivalent, lightning bolt equivalent, and food calories.
A magnitude 7 earthquake releases about 31.6 times more energy than a magnitude 6 earthquake.
No. Energy measures how much energy is released at the source. Damage depends on depth, distance, soil conditions, building quality, and population density.
No. This calculator estimates energy release only. It does not predict damage, casualties, or shaking intensity.