Scientific Calculator
Use a scientific calculator for arithmetic, powers, roots, trigonometry, logarithms, factorials and percentage expressions.
Evaluate real-number scientific expressions with parentheses, powers, trigonometry, logarithms and factorials.
Result
Angle mode: Degrees. Inverse trigonometric results use the same angle mode. Percent is always a postfix division by 100: 100 + 10% = 100.1, not 110.
Real finite results only; no complex numbers. Factorial is limited to whole numbers 0–170. Inputs use floating-point arithmetic; displayed answers use up to 12 significant digits. Use a decimal point; grouping commas are not supported.
How to use this calculator
Evaluate real-number scientific expressions with parentheses, powers, trigonometry, logarithms and factorials. Enter amounts in the units shown, select the applicable options, and click Calculate. Use Reset to restore the starting values.
Calculation formula
Powers are right-associative and precede a leading minus: 2^3^2 = 512; −2^2 = −4. Factorial and percent apply to the preceding value.
Assumptions and accuracy
Check the selected mode, units, date endpoints and result notes. Currency selection controls display and rounding, not exchange rates. Calendar calculations do not include holidays or local time-of-day.
Choose what to calculate
Scientific calculator with degrees and radians
Evaluate scientific expressions with selected degree or radian angle units. Use parentheses to make operation order explicit.
Open this calculationUnderstanding this calculation
Evaluate a scientific expression with a visible keypad or keyboard. Choose Degrees or Radians before calculating trigonometric functions. Parentheses make the intended grouping explicit; powers are right-associative and bind more tightly than a leading minus.
Worked examples
Combine a degree-mode sine and a power
Expression sin(30) + 2^3; Degrees mode.
- sin(30 degrees) = 0.5.
- 2^3 = 8; 0.5 + 8 = 8.5.
Result: 8.5.
Try these inputsUse parentheses to change arithmetic order
Expression (2+3)*4.
- Evaluate the parentheses first: 2+3 = 5.
- Multiply 5 by 4 = 20.
Result: 20.
Try these inputsEvaluate a sine in radians
Expression sin(pi/2); Radians mode.
- pi/2 radians is a right angle.
- The sine of a right angle is 1.
Result: 1.
Try these inputsCommon questions
Does sin use degrees or radians?
Select the angle mode. Degrees is the default; inverse trigonometric answers use the same selected unit.
How does percent work in this scientific calculator?
A postfix percent always divides its preceding value by 100. Therefore 100 + 10% is 100.1; use 100 × (1 + 10%) for a ten-percent increase.
Is negative two squared positive or negative?
−2^2 is −4 because power precedes the leading minus. Write (−2)^2 to square the negative number and obtain 4.
Can I use the keyboard?
Yes. Enter the expression and press Enter to calculate; Shift+Enter keeps a line break. Keypad square, factorial, reciprocal and sign keys transform the selected text, or the whole expression if nothing is selected. AC empties the expression; Reset restores the starting example.
Scope and assumptions
Finite real-number arithmetic using floating-point numbers, not symbolic algebra, graphing or complex arithmetic. Expressions are limited to 2,000 characters, 512 tokens and bounded nesting. Display uses up to 12 significant digits and scientific notation for extreme magnitudes.
Sources
Calculation notes checked . Examples are mathematical checks under the stated assumptions.
Calculation methods and formulas
Scientific Expression
Evaluate real-number scientific expressions with parentheses, powers, trigonometry, logarithms and factorials.
Powers are right-associative and precede a leading minus: 2^3^2 = 512; −2^2 = −4. Factorial and percent apply to the preceding value.
See our calculation methodology and review status for data versions, rounding and validation limitations.