🧮 Math Tool

Scientific Calculator

A full-featured scientific calculator with trigonometry, logarithms, powers, and more. Works on any device, no download needed.

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🧮 Scientific Calculator

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Free Online Scientific Calculator

Our Scientific Calculator gives you all the power of a physical scientific calculator right in your browser — no download, no app, no account needed. Whether you’re a student working through trigonometry homework, an engineer running calculations, or anyone who needs more than basic arithmetic, this tool handles it all.

Trigonometric Functions

Sine, cosine, and tangent are the foundation of trigonometry, used in everything from architecture to game design. Toggle between degrees and radians depending on your application. Inverse trig functions (sin⁻¹, cos⁻¹, tan⁻¹) give you angles from ratios.

Logarithms and Exponentials

Log (base 10) and ln (natural log, base e) are essential for science, finance, and engineering. Use xʸ for any power and the dedicated x² and x³ buttons for common operations. The constant e (≈ 2.71828) and π (≈ 3.14159) are available as single-tap constants.

Order of Operations

This calculator respects BODMAS/PEMDAS order of operations — brackets are processed first, then powers, then multiplication and division, then addition and subtraction. Use the ( ) buttons to explicitly group expressions for complex calculations.

Frequently Asked Questions

What is the difference between DEG and RAD mode?
DEG (degrees) is used for everyday angles — a full circle is 360°. RAD (radians) is used in advanced mathematics — a full circle is 2π ≈ 6.283 radians. Always match your mode to your problem.
How do I calculate a factorial?
Enter a non-negative integer and press n!. For example, 5! = 5 × 4 × 3 × 2 × 1 = 120. Factorials grow very quickly — 20! already exceeds 2.4 quadrillion.
What does 1/x do?
1/x calculates the reciprocal — the result of dividing 1 by your current value. For example, 1/4 = 0.25. Useful in physics, optics, and electrical calculations.
Can this calculator handle negative numbers?
Yes. Use the subtraction key (−) to enter negative values. For example, enter 0, then −, then 5 to work with −5. Absolute value (|x|) returns the positive version of any number.
What is Euler’s number e?
Euler’s number e ≈ 2.71828 is one of the most important constants in mathematics. It’s the base of natural logarithms and appears in compound interest formulas, probability theory, and many natural growth models.
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