Instant · Precise · Universal
34 units available
6 categories total
To convert µg to mg: divide by 1,000. To convert µg to grams: divide by 1,000,000.
1 µg = 10⁻⁶ g = 10⁻⁹ kg = 0.001 mg = 1,000 ng.
For example, 1 Microgram (µg) = 1.674425e-34 Earth's Mass (M⊕).
| Microgram (µg) | Earth's Mass (M⊕) |
|---|---|
| 0.1 | 1.674425e-35 |
| 0.5 | 8.372124e-35 |
| 1 | 1.674425e-34 |
| 2 | 3.348850e-34 |
| 5 | 8.372124e-34 |
| 10 | 1.674425e-33 |
| 25 | 4.186062e-33 |
| 50 | 8.372124e-33 |
| 100 | 1.674425e-32 |
| 500 | 8.372124e-32 |
| 1000 | 1.674425e-31 |
The microgram is a unit of mass equal to 10⁻⁶ grams or 10⁻⁹ kilograms — one millionth of a gram.
1 µg = 10⁻⁶ g = 10⁻⁹ kg = 0.001 mg = 1,000 ng.
To convert µg to mg: divide by 1,000. To convert µg to grams: divide by 1,000,000.
Vitamin dosages (e.g., vitamin B12: 2.4 µg/day), drug formulations, and food additive regulations.
The recommended daily intake of vitamin D is 15 µg (600 IU) — an incredibly tiny yet vital amount for bone health.
Confusing µg with mg — a 1,000× error. In medicine, this can be life-threatening. Always double-check the prefix.
In medical contexts, 'mcg' = 'µg'. If a prescription says '200 mcg', that's 0.2 mg or 0.0002 g.
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.



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