Calculators Conversion

Calculate exact age in years, months and days, total days lived, birth weekday and days until the next birthday.

Calculate days and weekdays between dates, or add and subtract days, weeks, months and years with leap-year handling.

Calculate percentages, proportions, percentage change, increases, decreases and symmetric percentage difference with formulas and checked examples.

Calculate weekly work hours from clock-in, clock-out and unpaid breaks. Includes overnight shifts, decimal hours, overtime and estimated gross pay.

Calculate ceiling tile layout, orientation, waste, full cartons, purchased coverage, excess and cost for a rectangular room.