Scientific Calculator US
Free online scientific calculator with trigonometry, logarithms, powers, roots, factorials and the constants pi and e — switch instantly between degrees and radians.
How it works
Tap the keys or type on your keyboard to build an expression. Use the function keys for trigonometry, logarithms, powers and roots, switch between DEG and RAD for angles, and press = to evaluate. Calculations follow standard order of operations.
Frequently asked questions
Does this scientific calculator support degrees and radians?
Yes. Use the DEG/RAD toggle to choose the angle mode; sin, cos, tan and their inverse functions use whichever mode is selected.
Which functions are available?
Arithmetic, powers (x^y), square roots, factorials (n!), percentages, trigonometry (sin, cos, tan and inverses), natural log (ln), base-10 log, the exponential function and the constants π and e.
What order of operations does it use?
Standard precedence (BODMAS/PEMDAS): parentheses first, then exponents, then multiplication and division, then addition and subtraction. Powers are evaluated right to left.
Scientific Calculator
A full scientific calculator that handles everything from basic arithmetic to trigonometry, logarithms, powers, roots and factorials. Switch between degrees and radians, use parentheses for grouping, and type directly on your keyboard for speed.
Functions included
- Trigonometry: sin, cos, tan and the inverse functions, in degrees or radians.
- Logarithms: natural log (ln) and base-10 log, plus the exponential function.
- Powers and roots: x^y and square root.
- Factorials (n!), percentages and the constants π and e.
Order of operations
Calculations follow standard BODMAS/PEMDAS precedence, with powers evaluated right to left, so expressions like 2^3^2 and 2(3+1) give the results you expect.
Results are estimates for general guidance in United States and may not reflect the latest local rates, fees or rules. Check official sources before making decisions.