The Toolkit

Tools & Calculators

Practical calculators for everyday math, dates, passwords, and data work. Built for clarity, not jargon.

Age Calculator

Calculate exact age from date of birth in years, months, and days.

Add or subtract hours, minutes, and seconds precisely.

Find the difference between two dates in days, weeks, months, or years.

Generate random numbers inside a custom range.

Compute grade point average from credit hours and grades.

Find percentage of a number, increase, decrease, or ratio.

Calculate mean, median, mode, and range from a dataset.

Evaluate logarithms in natural, common, or custom bases.

Add, subtract, multiply, and divide fractions.

Calculate area for circles, rectangles, triangles, and more.

Generate strong passwords and estimate their entropy.

Use trigonometry, powers, logs, and memory functions.

Compute population and sample standard deviation from a dataset.