Calculators
General calculators
Simple utility calculators for quick maths and one-off checks when you do not need a more specialised tool.
Calculators in this category
When these tools help
General calculators are for the moments when the question is simple but you still want a cleaner answer than mental arithmetic. Use the standard calculator for quick sums, percentages, brackets, and rough checks before you move on to a more specific tool. If your question is really about electricity, VAT, savings, time, or unit conversion, those category pages will usually give a better answer because they include more context and assumptions. This page is best for quick maths, not for interpreting bills, contracts, or health data.