Scientific calculator with order of operations
Type an expression with +, −, ×, ÷, ^, parentheses and functions such as sqrt, sin, cos, tan, log, ln and abs. In degree mode, sqrt(81) + sin(30) = 9.5. You can type * or ×, / or ÷, and “x” between numbers.
Inputs used by this calculator
Scientific Calculator uses the fields below. The starting values reproduce the page example; replace them with values from the same units and time period before using the result.
| Input | Starting example | Accepted value | How it is used |
|---|---|---|---|
| Expression | sqrt(81) + sin(30) | Text or a list in the format shown | Supplies the expression quantity used by the published equation or result breakdown. |
| Angle mode | Degrees | Degrees · Radians | Chooses which Scientific Calculator method or unknown the engine evaluates. |
Order of operations
The calculator follows the standard order: parentheses, then exponents, then multiplication and division from left to right, then addition and subtraction from left to right. So 2 + 3 × 4 is 14, not 20. Add parentheses when you want a different order: (2 + 3) × 4 = 20.
Exponents and roots
Use ^ for powers: 2^10 = 1,024. Stacked exponents are evaluated from the right, so 2^3^2 is 2^9 = 512. Use sqrt() for square roots; for other roots raise to a fraction, such as 27^(1/3) = 3.
Degrees or radians
Trigonometric functions read angles in the selected mode. In degree mode, sin(30) is 0.5; in radian mode, sin(30) treats 30 as radians and gives about −0.988. Choose degrees for most everyday geometry and radians for calculus and physics formulas.
Logarithms
log() is the base-10 logarithm, so log(1000) = 3. ln() is the natural logarithm with base e, so ln(e) = 1. To use another base, divide: log base 2 of 8 is log(8) ÷ log(2) = 3.
Typing tips
Write multiplication explicitly: 2(3+4) is not accepted, but 2*(3+4) or 2 × (3 + 4) is. Constants pi and e are built in. Commas in long numbers are removed, so 1,250 × 12 works.
Precision
Calculations use standard double-precision arithmetic, which is exact for whole numbers up to about 9 quadrillion and accurate to about 15 significant digits otherwise. For exact arithmetic on very large whole numbers, use the Big Number Calculator.
Supported functions with examples
| Expression | Function | Result |
|---|---|---|
| sqrt(81) | Square root | 9 |
| 2^10 | Power | 1,024 |
| abs(-7) | Absolute value | 7 |
| log(1000) | Base-10 logarithm | 3 |
| ln(e) | Natural logarithm | 1 |
| sin(30) | Sine, degree mode | 0.5 |
| cos(60) | Cosine, degree mode | 0.5 |
| tan(45) | Tangent, degree mode | 1 |
| 2*pi*3 | Circumference of r = 3 | 18.84956 |
Frequently asked questions
What order does the calculator use?
Parentheses, exponents, multiplication and division, then addition and subtraction.
How do I type a square root?
Use sqrt(), for example sqrt(81).
Why is my sine result unexpected?
Check the angle mode: degrees and radians give different results.
How do I calculate a cube root?
Raise to 1/3: 27^(1/3) = 3.
Can I write 2(3+4)?
No. Use 2*(3+4); implicit multiplication is not supported.
What is the difference between log and ln?
log is base 10; ln is base e.
How large can numbers be?
About 1.8 × 10^308, with around 15 significant digits of precision.
What to keep in mind
Supports +, −, ×, ÷, ^, parentheses, pi, e, sqrt, sin, cos, tan, log, ln and abs. Implicit multiplication is not supported.
Results are rounded for display in US format, with money in dollars and cents; CSV exports keep full calculation precision. This is a calculation summary, not an official certificate.