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To convert Earth masses to kg: multiply by 5.9722 × 10²⁴.
M⊕ = 5.9722 × 10²⁴ kg ≈ 5.972 Yg (yottagrams). Earth = 1 M⊕ by definition.
For example, 1 Earth's Mass (M⊕) = 5.972200e+18 Gigagram (Gg).
| Earth's Mass (M⊕) | Gigagram (Gg) |
|---|---|
| 0.1 | 5.972200e+17 |
| 0.5 | 2.986100e+18 |
| 1 | 5.972200e+18 |
| 2 | 1.194440e+19 |
| 5 | 2.986100e+19 |
| 10 | 5.972200e+19 |
| 25 | 1.493050e+20 |
| 50 | 2.986100e+20 |
| 100 | 5.972200e+20 |
| 500 | 2.986100e+21 |
| 1000 | 5.972200e+21 |
The Earth mass is the mass of planet Earth, approximately 5.972 × 10²⁴ kilograms.
M⊕ = 5.9722 × 10²⁴ kg ≈ 5.972 Yg (yottagrams). Earth = 1 M⊕ by definition.
To convert Earth masses to kg: multiply by 5.9722 × 10²⁴.
Expressing exoplanet masses (e.g., 'a planet of 3 Earth masses'), moon masses, and asteroid masses.
Earth gains about 40,000 tonnes of mass per year from cosmic dust — but that's only 10⁻¹⁷ of its total mass.
Earth's mass is hard to visualize. The key insight: it's known from G × M⊕ (the gravitational parameter), not M⊕ alone.
Cavendish 'weighed the Earth' by measuring G. If you know g (9.8 m/s²) and Earth's radius, you can calculate M⊕ = gR²/G.
The gigagram is equal to 10⁹ grams or 1,000 tonnes (metric tons).
1 Gg = 10⁹ g = 10⁶ kg = 1,000 tonnes.
To convert Gg to tonnes: multiply by 1,000. To convert Gg to kg: multiply by 10⁶.
National emissions reports, large mining output figures, and major commodity trade volumes.
The Great Pyramid of Giza has an estimated mass of about 6,000 Gg (6 million tonnes).
Confusing Gg (gigagram) with GB (gigabyte). In mass contexts, G always means giga = 10⁹.
1 Gg = 1 kilotonne = 1,000 tonnes. Used when 'tonnes' gets unwieldy for very large masses.



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