Log P to percent in octanol
Type a value in log P to get it in % instantly.
99.01%
That's 6.5× as greasy as aspirin, while an ideal oral drug is 3.2× greasier. About 99.01% of it ends up in the oily layer.
Convert the other way: % to log P
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 log P to %
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 log P = 99.0099 %.
Every unit
Your partition in every unit
Tables
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 % |
% 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 |
Quick answers
Quick answers
- How many % is 1 log P?
- 1 log P is 90.9091 %.
- How many % is 10 log P?
- 10 log P is 100 %.
- How many % is 2 log P?
- 2 log P is 99.0099 %.
The units
About these units
Log P (log P)
The base-ten logarithm of the octanol–water ratio.
Percent in octanol (%)
How much of it ends up in the oily layer.
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