Calculators and trackers

The ones that do the arithmetic

703 resources whose online version and spreadsheet work the figures out — totals, balances, cost per mile, days remaining, what is left to allocate — as you type. Each also prints as a plain sheet for the reader who would rather add up with a pen.

None of them contains a rate, target or threshold of ours. Where a calculation needs a percentage or a figure — a tax rate, an interest rate, a savings goal — there is a cell for yours, and the result is only as good as what you put in it.