Dalton to Microgram Converter
Unit Converter
Instant · Precise · Universal
34 units available
6 categories total
How to Convert Dalton to Microgram
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-18 Microgram (µg).
Dalton to Microgram — Common Values
| Dalton (Da) | Microgram (µg) |
|---|---|
| 0.1 | 1.660539e-19 |
| 0.5 | 8.302695e-19 |
| 1 | 1.660539e-18 |
| 2 | 3.321078e-18 |
| 5 | 8.302695e-18 |
| 10 | 1.660539e-17 |
| 25 | 4.151348e-17 |
| 50 | 8.302695e-17 |
| 100 | 1.660539e-16 |
| 500 | 8.302695e-16 |
| 1000 | 1.660539e-15 |
About Dalton (Da)
Definition
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.
Mathematical Relationship
1 Da = 1 u = 1.6605390666 × 10⁻²⁷ kg. Proteins range from ~5 kDa to >1,000 kDa.
Conversion Formula
To convert Da to kg: multiply by 1.6605390666 × 10⁻²⁷. 1 kDa = 1,000 Da.
Practical Applications
Protein molecular weights (hemoglobin ≈ 64.5 kDa), DNA fragment sizing, and antibody characterization.
Interesting Facts
Titin, the largest known protein, has a molecular weight of about 3,800 kDa (3.8 MDa). The average protein is ~40–50 kDa.
Common Mistakes
The dalton and u are identical — they're just preferred in different fields (Da in biology, u in chemistry/physics).
Educational Tips
If a paper says a protein is '50 kDa,' that's 50,000 atomic mass units — about 50,000 hydrogen atoms' worth of mass.
About Microgram (µg)
Definition
The microgram is a unit of mass equal to 10⁻⁶ grams or 10⁻⁹ kilograms — one millionth of a gram.
Mathematical Relationship
1 µg = 10⁻⁶ g = 10⁻⁹ kg = 0.001 mg = 1,000 ng.
Conversion Formula
To convert µg to mg: divide by 1,000. To convert µg to grams: divide by 1,000,000.
Practical Applications
Vitamin dosages (e.g., vitamin B12: 2.4 µg/day), drug formulations, and food additive regulations.
Interesting Facts
The recommended daily intake of vitamin D is 15 µg (600 IU) — an incredibly tiny yet vital amount for bone health.
Common Mistakes
Confusing µg with mg — a 1,000× error. In medicine, this can be life-threatening. Always double-check the prefix.
Educational Tips
In medical contexts, 'mcg' = 'µg'. If a prescription says '200 mcg', that's 0.2 mg or 0.0002 g.