Open as many calculators as you need. Drag them anywhere.
calcwindow.com gives you a standard calculator, a scientific calculator and a currency converter in separate windows. Open as many as you need, drag them anywhere on the desk, snap them together with Magnet and give each one a name, so every calculation stays in view.
Everything runs in your browser. There is no sign-up, and the numbers you type are not sent to our servers. Use the Scientific tab on any calculator for trigonometry, logarithms, powers and factorials, or open a Currency window to convert between major currencies.
New here? Start with how to use calcwindow.com.