Calculator - By Mr.Bear by Mr.Bear

Mr.Bear's Scientific Calculator is a powerful and easy-to-use Firefox extension. It supports DEG/RAD mode, keyboard input, undo/redo, and advanced functions like sine, cosine, tangent, square roots, and π. The interface allows customizable colors that persist across sessions, ensuring your preferred look is always maintained. Enter expressions directly, use all standard arithmetic operations, and switch between trigonometric modes effortlessly. Perfect for students, professionals, or anyone needing a reliable scientific calculator inside Firefox.