Calculators

Calculates the effective nuclear charge (Zeff) experienced by an electron in an atom, taking into account the shielding effect of other electrons.

This calculator converts the mass of grain to various units, including bushels, pounds, and kilograms. It is useful for farmers, grain traders, and anyone involved in agricultural logistics.

Calculates the Chi-Square statistic and p-value for goodness-of-fit or test of independence. It requires observed and expected frequencies or values.

This calculator estimates a horse's weight based on its girth and body length measurements.

Calculates the number of full stacks and remaining items for a given quantity of an item in Minecraft.

Calculates the average arterial pressure during a single cardiac cycle. MAP is considered a better indicator of perfusion to vital organs than systolic blood pressure.

This calculator demonstrates the behavior of floating-point numbers in calculations and highlights potential precision issues due to the way computers store and manipulate these numbers. It allows you to input two numbers and an operation, then displays the result and the difference between the calculated result and a more precise value.

Calculates the number of business days (Monday to Friday) between two dates, excluding weekends.

Calculates the volume, surface area, or diameter of a sphere given its radius.

Converts numbers up to 3,999,999 into Roman numerals and provides a breakdown of the Roman numeral system.