Our free Scientific Calculator helps you solve everyday math and advanced problems in seconds. From basic arithmetic to trigonometry, logarithms, powers, roots, factorials, and percentages, it delivers precise results with customizable precision and number formatting.
Why use this Scientific Calculator?
Whether you are a student, engineer, researcher, or someone tackling day-to-day calculations, a versatile scientific calculator saves time and avoids mistakes. This tool brings together core functions in a clean interface, offers degree and radian angle modes for trigonometry, and lets you choose decimal precision and scientific notation for clear reporting. There is nothing to install, and it works right in your browser.
Key features at a glance
- Basic operations: addition, subtraction, multiplication, division, and modulus.
- Powers and roots: exponentiation, nth roots, and ex.
- Logarithms: natural log (ln), common log (log10), and log with any base.
- Trigonometry: sin, cos, tan with degree/radian modes, plus inverse functions.
- Other utilities: factorial, absolute value, and percentage calculations.
- Custom output: choose decimal precision and fixed or scientific notation.
How to use the Scientific Calculator
- Select an operation from the dropdown list. If your choice requires two inputs (for example, power or division), be sure to enter both a and b.
- Enter your primary value. For trigonometric functions, a is interpreted as an angle when sin, cos, or tan is selected.
- For inverse trigonometry (asin, acos, atan), the result will be returned in the angle unit you set.
- Pick the angle unit: degrees or radians. Switch to degrees for common angles like 30°, 45°, and 60°; use radians for calculus and engineering contexts.
- Set decimal precision (0–12) and choose fixed or scientific (E) notation to format results.
- Click Calculate to see your answer instantly.
Tips for accurate results
To avoid domain errors, ensure your inputs are valid for the function chosen. For instance, logarithms require positive inputs; the base for a logarithm must be positive and not equal to 1. For inverse trig functions, inputs must be within the valid range: ?1 to 1 for asin and acos. When working with roots of negative numbers, remember that even-degree roots of negative values are not real, while odd-degree roots can be computed as negative real numbers. For factorials, use non?negative integers; values above 170 can overflow typical floating?point representations.
Common use cases
- Education: check algebra, trigonometry, and calculus exercises quickly.
- Engineering: convert between degrees and radians, evaluate logs and exponentials.
- Data analysis: compute percentages and growth rates with consistent precision.
- Everyday math: split bills, compare percentages, or calculate compounded effects.
Performance and precision
The calculator performs operations using reliable numerical methods. You can set up to 12 decimal places for display. Scientific notation is particularly useful when values are extremely large or small, such as results from exponential and factorial functions. Keep in mind that floating?point arithmetic follows typical IEEE 754 behavior, which is suitable for most educational, professional, and everyday tasks.
Privacy and accessibility
All calculations happen client?to?server without storing your personal data. The layout is designed to be keyboard?friendly, with clear labels and helpful notes to guide you through each step.
Get started
Choose your operation, enter your values, adjust the settings, and press Calculate. The Scientific Calculator will present a clear, formatted result you can copy, share, or use in your work immediately.