Percent in octanol to log P
Type a value in % to get it in log P instantly.
-1.69log P
That's 20× as greasy as table sugar, while caffeine is 42× greasier. About 2% of it ends up in the oily layer.
Convert the other way: log P to %
What it means
Where does it go?
Log P is for the neutral molecule. For anything that ionizes, log D at a stated pH is the figure that matters in the body.
The math
How to convert % to log P
Log P is a logarithm of the ratio: P = 10^(log P), and the share in octanol is P ÷ (1 + P) × 100 percent. The free energy of transfer is −5.708 × log P kJ/mol.
Example: 2 % = -1.6902 log P.
Every unit
Your partition in every unit
Tables
% to log P conversion table
| % | log P |
|---|---|
| 0.0999 % | -3 log P |
| 0.99 % | -2.00004 log P |
| 9.09 % | -1.00005 log P |
| 50 % | 0 log P |
| 90.9 % | 0.999522 log P |
| 99 % | 1.99564 log P |
| 99.9 % | 2.99957 log P |
log P to % conversion table
| log P | % |
|---|---|
| -3 log P | 0.0999001 % |
| -2 log P | 0.990099 % |
| -1 log P | 9.09091 % |
| 0 log P | 50 % |
| 1 log P | 90.9091 % |
| 2 log P | 99.0099 % |
| 3 log P | 99.9001 % |
| 4 log P | 99.99 % |
| 5 log P | 99.999 % |
| 6 log P | 99.9999 % |
| 8 log P | 100 % |
Quick answers
Quick answers
- How many log P is 1 %?
- 1 % is -1.99564 log P.
- How many log P is 10 %?
- 10 % is -0.954243 log P.
- How many log P is 2 %?
- 2 % is -1.6902 log P.
The units
About these units
Percent in octanol (%)
How much of it ends up in the oily layer.
Log P (log P)
The base-ten logarithm of the octanol–water ratio.
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