How to use this tool
Check the units, enter your values, and run the tool. Results follow the assumptions and method below.
Calculation method
First-order decay rate constant
log(initial/final)/timeRate Constant Calculator
Integrated first-order disappearance law; final concentration cannot exceed initial.
Integrated first-order disappearance law; final concentration cannot exceed initial.
Result
Enter your values and run the tool to see your result.