Calculators

Calculates probabilities related to the time until an event occurs in a Poisson process. The exponential distribution models the time until an event happens, given an average rate of occurrence.

Calculates the accuracy of a classification model based on True Positives (TP), True Negatives (TN), False Positives (FP), and False Negatives (FN). Accuracy is the proportion of correct predictions over the total number of predictions.

Calculate the approximate reading time for Olga Tokarczuk's books based on your reading speed and the book's length.

Calculates the estimated amount of buffering agent needed to adjust soil pH to a target level. This calculator uses a simplified approach and provides an estimate. Actual buffering agent requirements may vary based on soil type, organic matter content, and other factors. Always conduct a soil test and follow the buffering agent manufacturer's recommendations.

Estimate the amount of popcorn needed for an event based on the number of guests and the popping method.

This tool calculates the appropriate salt and water ratios for fermenting vegetables. It supports different vegetable types and preservation methods, and provides guidance on fermentation time, temperature, pH, and salinity.

Estimates how many items or boxes fit on a standard pallet or how many pallets are needed for a shipment.

Calculates the relative rate of effusion of two gases using Graham's Law, which states that the rate of effusion of a gas is inversely proportional to the square root of its molar mass.

Estimate creatinine clearance using the Cockcroft-Gault equation, a measure of kidney function.

Calculates the mortality rate in a farm animal population based on the number of deaths and the initial population size.