Math calculator
Scientific Calculator with Functions
Evaluate scientific expressions with trigonometry, logarithms, roots, powers, factorials, constants, parentheses, and degree or radian modes.
Functions, constants, and expression order
Set the angle mode and make the intended operation order explicit
Scientific expressions follow operator precedence: evaluate parentheses and functions, then powers, multiplication or division, and addition or subtraction. Add parentheses whenever the intended grouping could be ambiguous, especially around fractions, exponents, and negative values.
Degree and radian modes change trigonometric results. In DEG mode sin(30) = 0.5; in RAD mode sin(pi/6) = 0.5. Inverse trigonometric results also use the selected mode, so record it when copying an answer.
Functions have real-number domain limits. Division by zero, log(0), log of a negative number, an even root of a negative number, or factorial of a negative or non-integer input is undefined in this calculator.
| Reference | Value or meaning |
|---|---|
| Degree example | sin(30) = 0.5 in DEG mode |
| Radian example | sin(pi/6) = 0.5 in RAD mode |
| Natural logarithm | ln(e) = 1 |
| Base-10 logarithm | log(1000) = 3 |
| Order example | 2 + 3 x 4 = 14, while (2 + 3) x 4 = 20 |
Checks before using the result
- Choose DEG or RAD before evaluating trigonometric expressions.
- Use parentheses to show the numerator, denominator, exponent, or function argument clearly.
- Distinguish base-10 log from natural logarithm ln.
- Estimate the expected sign and magnitude before trusting a copied result.
FormulaSupports sin, cos, tan, inverse trig, ln, log10, sqrt, powers, factorials, pi, e, and parentheses
Formula
Scientific expression evaluation
Supports sin, cos, tan, inverse trig, ln, log10, sqrt, powers, factorials, pi, e, and parentheses
In DEG mode, sin(30) + sqrt(144) evaluates to 12.5.
SourcesThis calculator includes source notes, assumptions, and exclusions so the result is easier to verify before use.
Sources and assumptions
Source notes
This calculator includes source notes, assumptions, and exclusions so the result is easier to verify before use.
- Effective year
- Current rules
- Last verified
- 2026-06-18
Use calculator results as estimates and verify important decisions with official sources.
Assumptions
- Trigonometric functions use the selected degree or radian angle mode.
- Expressions follow standard operator precedence and evaluate parentheses first.
- Displayed decimals may be rounded while the internal calculation retains more precision.
Not included
- Symbolic algebra and equation solving.
- Graphing, matrices, calculus, and statistical distributions.
- Complex-number results for functions outside their real-number domain.
FAQ8 common questions for this calculator.
FAQs
Does the scientific calculator support degrees and radians?+
Yes. Use DEG for degree-based trigonometry and RAD for radian-based expressions.
Can I use constants and previous answers?+
Yes. Use pi, e, and Ans in expressions. The Ans key reuses the previous result.
Does the calculator follow order of operations?+
Yes. Parentheses and functions are evaluated before powers, multiplication or division, and addition or subtraction.
What is the difference between ln and log?+
ln uses base e, while log uses base 10. Check which logarithm your formula requires before evaluating it.
Why is a scientific expression undefined?+
A function may be outside its real-number domain, such as sqrt(-1), log(0), division by zero, or factorial of a negative or non-integer value.
How does the Scientific Calculator calculate the result?+
For the Scientific Calculator, it uses the Scientific expression evaluation: Supports sin, cos, tan, inverse trig, ln, log10, sqrt, powers, factorials, pi, e, and parentheses. In DEG mode, sin(30) + sqrt(144) evaluates to 12.5.
What information do I need to use the Scientific Calculator?+
Enter the expression you want to evaluate, then choose degree or radian mode when trigonometry is involved. You can include constants, parentheses, powers, roots, logarithms, factorials, and the previous answer.
How accurate is the Scientific Calculator?+
The scientific calculator evaluates supported real-number expressions using standard precedence and the selected angle mode. Displayed decimals may be rounded, and functions outside their real-number domains are undefined.
RelatedNearby math calculators for the next step after Scientific Calculator.
Math guide
How to use the Scientific Calculator
Evaluate scientific expressions with explicit operator precedence, functions, constants, and previous-answer reuse. Choose degree or radian mode before trigonometry and use parentheses when grouping matters.
- 1
Set the angle mode
Choose DEG for degree inputs or RAD for radian inputs before using trigonometric or inverse-trigonometric functions.
- 2
Build the expression
Use parentheses, powers, roots, logarithms, constants, factorials, and Ans to make the intended operation order explicit.
- 3
Sanity-check the result
Estimate the expected sign and magnitude, then check function domains and the selected angle mode before copying the answer.