Scientific Calculator

Scientific Calculator

Calculate arithmetic, powers, roots, logarithms, trigonometry, constants, and grouped expressions in one browser-based scientific calculator.

Quick Answer

In degree mode, sin(30) equals 0.5. You can also enter expressions such as (15 * 4 + 20 / 2), sqrt(144), or log(1000).

Use +, −, ×, ÷, ^, parentheses, trig, logs, π, and e

Supported: numbers, parentheses, +, -, *, /, ^, sin, cos, tan, sqrt, log, ln, abs, pi, and e.

Scientific result
0.5

sin(30) in degree mode

Angle modeDEG
Rounded to8 places
Steps
  1. Read the expression.
  2. Apply degree or radian mode for trigonometric functions.
  3. Evaluate powers, roots, logs, multiplication, division, addition, and subtraction.

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All calculations run locally in your browser. Your entered values are not sent to an external service.

How to Use the Scientific Calculator

Enter a math expression, choose degree or radian mode, and select Calculate. Use parentheses when you need a specific order. For trigonometry in school geometry problems, degree mode is usually the right choice. For calculus and many advanced formulas, radian mode is often expected.

  1. Type the expression with standard operators.
  2. Use ^ for powers and sqrt() for square roots.
  3. Choose DEG or RAD before using sin, cos, or tan.
  4. Review the rounded result and calculation notes.

Supported Scientific Calculator Functions

sin(x), cos(x), tan(x), sqrt(x), log(x), ln(x), abs(x), pi, e, +, -, *, /, ^, ( )

The calculator follows standard order of operations. Parentheses are evaluated first, then powers and functions, then multiplication and division, then addition and subtraction.

Scientific Calculator Examples

Trig example

In degree mode, sin(30) = 0.5. In radian mode, sin(30) uses 30 radians, so the result is different.

Log example

log(1000) returns 3 because it is the base-10 logarithm. ln(e) returns 1 because ln is the natural logarithm.

Power and root example

2^5 returns 32. sqrt(144) returns 12.

Common Scientific Calculator Mistakes

Using the wrong angle mode

Check DEG or RAD before entering trigonometric functions. This is the most common reason a trig answer looks wrong.

Forgetting parentheses

Use parentheses to control order, especially in fractions like (15 * 4 + 20) / 2.

Using log when the problem expects ln

On SolverCalc, log means base-10 logarithm and ln means natural logarithm.

Scientific Calculator FAQs

Is this calculator free?

Yes. It runs in your browser and does not require a sign-up.

Does it support radians?

Yes. Select RAD before calculating trigonometric functions.

Can it solve equations?

This page evaluates expressions. Use the equation solver for equations with variables.

Why did my trig answer change?

The answer changes when the angle mode changes. For example, sin(30) in degrees is different from sin(30) in radians.

Related SolverCalc tools

Equation SolverSolve linear equations with steps.Exponent CalculatorEvaluate powers and exponent rules.Logarithm CalculatorWork with log and ln expressions.

Reviewer

This educational math content is reviewed under the SolverCalc reviewer rule by Prof. Dr. Khalil Mudassar. WordPress adds the author bio automatically, so this page does not include a duplicate author box.

Keep calculating with SolverCalc

Use related algebra, exponent, logarithm, and trigonometry tools when a scientific expression is part of a larger problem.

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Sources

View mathematical references

Disclaimer

This calculator is intended for general educational and practical use. Review important results before relying on them in professional work.