Does this calculator use degrees or radians for trig functions?

This calculator uses degrees for trigonometric functions (sin, cos, tan). Enter angles in degrees — for example, sin(90) = 1.

How do I calculate a power like 3^4?

Type 3, press the xⁿ button (which inserts the ** operator), then type 4 and press = to get 81.

Can I type expressions directly with the keyboard?

Yes. The calculator supports keyboard input for digits, +, -, *, /, ., Enter (=), Backspace (⌫), and Escape (C).

What does the ± button do?

The ± button toggles the sign of the current number, making it positive if negative and negative if positive.

How do I use parentheses?

Use the ( and ) buttons in the second row of function buttons to group expressions. For example, (2+3)×4 evaluates the addition before the multiplication.

Math

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Scientific Calculator — Free Online with History Log

A full-featured scientific calculator with trig, logarithms, powers, and memory functions.

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How to use this calculator

👉 Fill in the boxes below and your answer appears instantly — no maths needed, we do it all for you! 🎉

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In plain English — what does this do?

🔢 This tool does the maths for you! Just type in your numbers, and it gives you the answer right away. No need to count on your fingers or use a pen and paper.

📌 Direct Answer & Summary

A scientific calculator performs arithmetic operations as well as advanced mathematical functions including trigonometry (sin, cos, tan), logarithms (log, ln), powers, square roots, and constants like π. It supports keyboard input and is suitable for students, engineers, and anyone needing more than basic arithmetic.

What is Scientific Calculator — Free Online with History Log?

How to use it

1️⃣ Click buttons or use your keyboard to enter numbers and operators.
2️⃣ Use the function buttons (sin, cos, tan, ln, log, x², √) to apply math functions to the current value.
3️⃣ Press = or Enter to evaluate the expression.
4️⃣ Press C to clear, or ⌫ (Backspace) to delete the last character.

Formula

Trig functions operate in degrees. Keyboard shortcuts: Enter for =, Backspace for ⌫, Escape for C, and standard number and operator keys (+, -, *, /).

💡 See it in action — a real example

To calculate sin(30°), type 30 and press sin — the result is 0.5. To compute 2^10, type 2, press xⁿ, then type 10 and press =. The answer is 1024.

❓ Common questions

Does this calculator use degrees or radians for trig functions?: This calculator uses degrees for trigonometric functions (sin, cos, tan). Enter angles in degrees — for example, sin(90) = 1.
How do I calculate a power like 3^4?: Type 3, press the xⁿ button (which inserts the ** operator), then type 4 and press = to get 81.
Can I type expressions directly with the keyboard?: Yes. The calculator supports keyboard input for digits, +, -, *, /, ., Enter (=), Backspace (⌫), and Escape (C).
What does the ± button do?: The ± button toggles the sign of the current number, making it positive if negative and negative if positive.
How do I use parentheses?: Use the ( and ) buttons in the second row of function buttons to group expressions. For example, (2+3)×4 evaluates the addition before the multiplication.

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