Pound to Dalton Converter
Unit Converter
Instant · Precise · Universal
34 units available
6 categories total
How to Convert Pound to Dalton
To convert pounds to kg: multiply by 0.4536. To convert kg to pounds: multiply by 2.2046.
1 lb = 16 oz = 0.45359237 kg = 453.59237 g = 7,000 grains.
For example, 1 Pound (lb) = 2.731597e+26 Dalton (Da).
Pound to Dalton — Common Values
| Pound (lb) | Dalton (Da) |
|---|---|
| 0.1 | 2.731597e+25 |
| 0.5 | 1.365799e+26 |
| 1 | 2.731597e+26 |
| 2 | 5.463194e+26 |
| 5 | 1.365799e+27 |
| 10 | 2.731597e+27 |
| 25 | 6.828993e+27 |
| 50 | 1.365799e+28 |
| 100 | 2.731597e+28 |
| 500 | 1.365799e+29 |
| 1000 | 2.731597e+29 |
About Pound (lb)
Definition
The pound is an imperial unit of mass equal to exactly 0.45359237 kilograms or 16 ounces.
Mathematical Relationship
1 lb = 16 oz = 0.45359237 kg = 453.59237 g = 7,000 grains.
Conversion Formula
To convert pounds to kg: multiply by 0.4536. To convert kg to pounds: multiply by 2.2046.
Practical Applications
Body weight, grocery shopping, luggage weight limits, boxing weight classes, and recipe measurements in the US.
Interesting Facts
The pound is legally defined as exactly 0.45359237 kg worldwide since 1959. 'Pound' and British '£' both trace back to the Roman libra.
Common Mistakes
Confusing pounds (mass) with pound-force (a unit of force). Also, approximately 1 kg = 2.2 lb, not 2 lb.
Educational Tips
Quick rule: divide pounds by 2 and subtract 10% for a rough kg conversion. Example: 150 lb ÷ 2 = 75, minus 10% ≈ 68 kg.
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.