Scientific Calculator
Trig, logs, exponents in one place
History
Quick guide
What can Scientific Calculator help you do?
Free online scientific calculator: sin/cos/tan, log/ln, sqrt, π, e, memory (M+/M-/MR), and history.
Best for
Scientific Calculator is for everyday estimates, unit conversion, percentages, splitting costs, or getting a quick number before opening a spreadsheet.
How to use it
For Scientific Calculator, enter the numbers and conditions shown on the page. If there are units or modes, confirm those first before comparing the result.
How to read the result
After using Scientific Calculator, check the result together with the inputs, units, and rounding. A quick calculator result should not be treated as a formal quote or final decision.
Privacy and limits
When using Scientific Calculator, calculations run in the browser and do not require an upload. For private income, prices, or health numbers, use approximate values when that is enough.
For Scientific Calculator: The calculator provides a practical estimate. For taxes, loans, medical decisions, or contracts, rely on official documents or professional advice.
Frequently Asked Questions
How is operator order decided?
Standard PEMDAS: Parentheses → Exponents → Multiply/Divide → Add/Subtract. 2+3*4 = 14.
DEG vs RAD?
Degrees vs Radians for trig functions. Default is DEG.