Moment magnitude to joules
Type a value in Mw to get it in J instantly.
6.31×10¹³J
That's about the same as a strong quake. That energy could run a home for about 1,623 years.
Convert the other way: J to Mw
What it means
How much energy is that?
Uses the standard relation log₁₀E = 1.5M + 4.8. Reported magnitudes vary slightly between agencies and methods.
The math
How to convert Mw to J
Magnitude is logarithmic energy: log₁₀E = 1.5M + 4.8, so one whole magnitude is about 32 times the energy.
Example: 6 Mw = 6.31×10¹³ J.
Every unit
Your earthquake in every unit
Tables
Mw to J conversion table
| Mw | J |
|---|---|
| 2 Mw | 63,095,700 J |
| 3 Mw | 1.995×10⁹ J |
| 4 Mw | 6.31×10¹⁰ J |
| 4.5 Mw | 3.548×10¹¹ J |
| 5 Mw | 1.995×10¹² J |
| 5.5 Mw | 1.122×10¹³ J |
| 6 Mw | 6.31×10¹³ J |
| 6.5 Mw | 3.548×10¹⁴ J |
| 7 Mw | 1.995×10¹⁵ J |
| 7.5 Mw | 1.122×10¹⁶ J |
| 8 Mw | 6.31×10¹⁶ J |
| 9 Mw | 1.995×10¹⁸ J |
J to Mw conversion table
| J | Mw |
|---|---|
| 2 J | -2.99931 Mw |
| 3 J | -2.88192 Mw |
| 4 J | -2.79863 Mw |
| 4.5 J | -2.76452 Mw |
| 5 J | -2.73402 Mw |
| 5.5 J | -2.70642 Mw |
| 6 J | -2.68123 Mw |
| 6.5 J | -2.65806 Mw |
| 7 J | -2.6366 Mw |
| 7.5 J | -2.61663 Mw |
| 8 J | -2.59794 Mw |
| 9 J | -2.56384 Mw |
Quick answers
Quick answers
- How many J is 1 Mw?
- 1 Mw is 1,995,260 J.
- How many J is 10 Mw?
- 10 Mw is 6.31×10¹⁹ J.
- How many J is 6 Mw?
- 6 Mw is 6.31×10¹³ J.
The units
About these units
Moment magnitude (Mw)
The modern magnitude scale, based on how much rock moved and how far.
Joules (J)
The SI unit of the energy released.
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