What this is trying to become
Not just a list of calculators.
A lot of utility sites are useful because they are large. That matters, but size by itself is not enough. Access Free Tools is trying to be large and understandable. If someone opens a page for wallpaper waste, subnet ranges, body mass index, percent error, ad revenue, watts to amps, or an OCR result, the page should explain what the answer means in plain English.
That is the real product: quick tools with enough explanation that people can double-check the number before they use it for homework, a project, a budget, a post, or a decision.