Convert between DNA length in base pairs, mass and physical length.
Double-stranded DNA averages 650 daltons per base pair and rises 0.34 nm per base pair. Those two constants convert between sequence length, mass and physical dimension. The human genome at 3.2 billion base pairs is therefore about a metre of DNA per cell, which is why chromatin packaging is so elaborate.
DNA Base Pair
MW = base pairs × 650 Da; length = base pairs × 0.34 nm
MW = base pairs × 650 Da; length = base pairs × 0.34 nm Double-stranded DNA averages 650 daltons per base pair and rises 0.34 nm per base pair. Those two constants convert between sequence length, mass and physical dimension.
The human genome at 3.2 billion base pairs is therefore about a metre of DNA per cell, which is why chromatin packaging is so elaborate.
This calculator takes 3 inputs: Length in base pairs, Number of copies, Average mass per base pair. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.