Scientific Calculator
Calculate trigonometry, logarithms, powers, roots and factorials in degrees or radians.
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How to use the scientific calculator
- Choose your angle mode. Select degrees or radians for trigonometric calculations.
- Enter an expression. Use the on-screen keypad or your keyboard.
- Calculate. Press equals or Enter; tap a history result to reuse it.
What happens to your calculations
Every calculation runs locally in your browser — nothing you enter is sent to a server.
What this calculator supports
ModesDegree and radian
Functionssin, cos, tan, logarithms, roots, powers, factorial, π and e
MemoryMemory controls plus reusable calculation history
InputKeyboard-friendly, alongside the on-screen keypad
ProcessingEntirely in your browser tab, fully private
Common reasons to use this calculator
- Work through trigonometry or logarithm homework without a physical calculator.
- Do a quick scientific calculation while already at a computer.
- Reuse an earlier result from history instead of retyping it.
- Cross-check a formula's result alongside a spreadsheet or code.
Frequently asked questions
Is my calculation uploaded anywhere?
No — everything is entirely private and local to your browser tab.
Degrees or radians — does it matter which I pick?
Yes — choose the mode before running trig functions, since it changes how sin/cos/tan interpret the input angle.
Is calculation history saved between visits?
History is available to tap and reuse while the page is open; treat it as per-session rather than a permanent log.
Can I type instead of tapping buttons?
Yes — it's keyboard-friendly, so you can type expressions directly.
What functions are available?
Trigonometry, logarithms, roots, powers, factorial, and the constants π and e, alongside everyday arithmetic.
Related guides
Last reviewed: August 2026