Calcora

Calcora is an offline-first all-in-one calculator toolkit. Use the basic calculator right from the home screen or choose a specialized tool for your needs. View formulas, detailed breakdowns, and assumptions, then copy, save, or recalculate results. **Basic Calculator** Addition, subtraction, multiplication, division, parentheses, percentages, squares, and square roots, with standard operator precedence. Division by zero and invalid expressions display clear error messages. **Money & Business** Percentages, successive discounts, profit and gross margin, tax calculations (tax-inclusive and tax-exclusive), and bill splitting. Successive discounts are calculated multiplicatively, and bill splitting uses cent-level rounding to ensure the shares add up to the original amount. **Date & Time** Date intervals, date addition and subtraction, countdowns, age and birthdays, working days, and work…