Essential functions
Use trigonometry, logarithms, powers, roots, percentages, and stack operations in a compact layout.
Browser calculator ยท Essentials
Simple Scientific
A compact RPN scientific calculator for arithmetic, logarithms, trigonometry, and everyday technical work.
Essential scientific RPN without the advanced layers. Tap the calculator first for keyboard shortcuts.
Use in browser
Scientific essentials, kept focused.
A direct calculator for people who want RPN entry, common scientific functions, memory, and a smaller learning surface.
Touch RPN on mobile
Use the Simple Scientific flavor inside Touch RPN on either supported operating system.