Calculators

This calculator finds the next palindrome date after a given date. A palindrome date is a date that reads the same backward as forward (e.g., 02/02/2020).

Calculates the molarity of a solution given the number of moles of solute and the volume of the solution in liters. Also calculates mass from molarity, volume and molecular weight.

Combines calculations for both work done and the rate at which it is done (power).

Estimates the possible date(s) of conception based on the last menstrual period or due date.

Calculates the ratio of useful output energy or power to the total input energy or power, often as a percentage.

Calculates the transpose of a matrix by swapping its rows and columns.

Calculates the dot product (scalar product) of two vectors. The dot product of two vectors is a single number that represents the cosine of the angle between them, scaled by the product of their magnitudes.

Converts a fraction into its equivalent decimal representation.

Calculates the listening time of an audiobook based on its length and playback speed.

Calculates the pKa value of a solution using either the Henderson-Hasselbalch equation or the acid dissociation constant (Ka).