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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+25 Hectogram (hg).
| Earth's Mass (M⊕) | Hectogram (hg) |
|---|---|
| 0.1 | 5.972200e+24 |
| 0.5 | 2.986100e+25 |
| 1 | 5.972200e+25 |
| 2 | 1.194440e+26 |
| 5 | 2.986100e+26 |
| 10 | 5.972200e+26 |
| 25 | 1.493050e+27 |
| 50 | 2.986100e+27 |
| 100 | 5.972200e+27 |
| 500 | 2.986100e+28 |
| 1000 | 5.972200e+28 |
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 hectogram is a unit of mass equal to 100 grams or one tenth of a kilogram.
1 hg = 100 g = 0.1 kg = 10 dag = 3.527 oz.
To convert hg to grams: multiply by 100. To convert hg to kg: divide by 10.
Italian food shopping (un etto di prosciutto = 100 g of ham). Occasionally in European nutrition contexts.
In Italy, 'un etto' (one hectogram = 100 g) is the standard portion unit at deli counters.
Rarely encountered outside Italy, so people may not recognize it. 1 hg = 100 g = 0.1 kg.
In Italy, 'un etto' = 100 g. The 'per 100 g' column on nutrition labels is essentially 'per hectogram'.



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