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First-order decay

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Chemical kinetics index
First-order decay diagram
This calc allows the prediction of reaction times for first-order and pseudo-first-order reactions, by using a simple (but accurate) exponential decay model.
Fraction of SM remaining
Time taken
So in a total time of

Remaining SM will be
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Enter the time (after reaction start) of monitoring and the fraction of starting material that remains at that time. Then enter the length of time you are interested in and the calc will display how far the reaction will proceed in that amount of time. This can be either more or less than the time of monitoring.
Other exponential decay processes can also be calculated with this calc.