online calculators are they safe to download?

Microsoft Calculator Plus works for me. It has standard, scientific, and conversion modes.

Depends which kind of calculators you are looking for? The standard Calculator that comes with Windows is sufficient for me, and I take Calculus and Physics in University, there's a button in the menu on the calculator that turns it into a scientific one.

If you're looking for conversion calculators (for example, meters squared to cubed) there are random websites that have scripts built into them that work perfectly.

What do you need a online calculator for? Every OS comes with one.

If you need a super scientific calculator. Try the calculator search engine www.wolframalpha.com Not sure what your wanting exactly

get the one from your start button. click your start button then go to all programs. There will be on in that list. Then right click it and it can be put either in your start button or on your desktop for easy access. It's the safest one I know of.

it depends upon the site from where you are downloading the calcultors i will suggest to download it from microsoft website

How about this?