Instant · Precise · Universal
34 units available
6 categories total
To convert Da to kg: multiply by 1.6605390666 × 10⁻²⁷. 1 kDa = 1,000 Da.
1 Da = 1 u = 1.6605390666 × 10⁻²⁷ kg. Proteins range from ~5 kDa to >1,000 kDa.
For example, 1 Dalton (Da) = 1.660539e-42 Exagram (Eg).
| Dalton (Da) | Exagram (Eg) |
|---|---|
| 0.1 | 1.660539e-43 |
| 0.5 | 8.302695e-43 |
| 1 | 1.660539e-42 |
| 2 | 3.321078e-42 |
| 5 | 8.302695e-42 |
| 10 | 1.660539e-41 |
| 25 | 4.151348e-41 |
| 50 | 8.302695e-41 |
| 100 | 1.660539e-40 |
| 500 | 8.302695e-40 |
| 1000 | 1.660539e-39 |
The dalton is a unit of mass equal to one unified atomic mass unit (1/12 of a carbon-12 atom), approximately 1.661 × 10⁻²⁷ kg.
1 Da = 1 u = 1.6605390666 × 10⁻²⁷ kg. Proteins range from ~5 kDa to >1,000 kDa.
To convert Da to kg: multiply by 1.6605390666 × 10⁻²⁷. 1 kDa = 1,000 Da.
Protein molecular weights (hemoglobin ≈ 64.5 kDa), DNA fragment sizing, and antibody characterization.
Titin, the largest known protein, has a molecular weight of about 3,800 kDa (3.8 MDa). The average protein is ~40–50 kDa.
The dalton and u are identical — they're just preferred in different fields (Da in biology, u in chemistry/physics).
If a paper says a protein is '50 kDa,' that's 50,000 atomic mass units — about 50,000 hydrogen atoms' worth of mass.
The exagram equals 10¹⁸ grams or 10¹⁵ kilograms — one trillion tonnes.
1 Eg = 10¹⁸ g = 10¹⁵ kg = 10⁹ tonnes.
To convert Eg to kg: multiply by 10¹⁵. To convert Eg to Pg: multiply by 1,000.
No everyday applications. Describes masses of small moons or large asteroids.
Earth's total mass is about 5.97 × 10⁶ Eg. The entire atmosphere weighs 'only' about 5 Eg.
Hardly ever encountered — most contexts use 'times 10^x kg' notation instead of exagrams.
If you need to express masses between Pg and Earth-masses, the exagram fills that gap: 1 Eg = 10¹⁵ kg.



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