Scientific Calculator — Trig, Log & Powers

Using the Scientific Calculator

Type on screen or with your keyboard — it works both ways.

1

Choose degrees or radians

Set DEG or RAD before using sin, cos or tan. The 2nd key switches those to their inverses and ln to eˣ. Your keyboard works too — digits, operators, Enter to equals, Backspace and Escape to clear.

2

Build the expression

Powers use the xʸ key, roots use √ and ∛, and n! is factorial. Constants π and e are one tap. Everything follows the standard order of operations, so parentheses group exactly as you expect.

3

Use memory and Ans

M+ and M− build a running total, MR recalls it and MC clears it; Ans reuses your last result. Converting a number to scientific notation instead? The Scientific Notation Calculator is built for that.

Frequently Asked Questions

How do I switch between degrees and radians?

To switch between degrees and radians, use the DEG / RAD toggle above the keypad. In degrees, sin(30) gives 0.5, which is what most everyday and school problems expect. In radians, the same functions treat the angle as a multiple of π, so sin(π ÷ 2) gives 1. The toggle also flips the inverse trig functions, so asin, acos and atan return an angle in whichever unit is selected. Pick the mode that matches your problem before you calculate, since the same input gives different answers in each.

How do I calculate exponents and roots?

For a power, use the scientific calculator's xʸ key: type 2, then xʸ, then 10 and equals to get 1024. The x² key squares whatever you have entered. For roots, the √ key takes a square root and ∛ takes a cube root, so √ then 144 gives 12. You can also raise to a fractional power for other roots — for a fifth root, raise to a power of 1÷5. Parentheses group everything the way the order of operations expects.

What do M+, M−, MR and MC do?

M+, M−, MR and MC control a single memory store. M+ adds the current result to memory and M− subtracts it, so you can accumulate a running total across separate calculations. MR recalls the stored value into your expression, and MC clears the memory back to zero. A small M indicator appears when memory holds a value. It is useful when you need to hold one figure aside — a subtotal or a constant — while you work out another part of the problem.

How is this different from a scientific notation calculator?

This scientific calculator evaluates expressions with trigonometry, logarithms, powers and roots, like a physical handheld calculator. If instead you need to convert a number to or from scientific notation — for example writing 0.00042 as 4.2 × 10⁻⁴, or doing arithmetic while keeping numbers in that form — use the dedicated Scientific Notation Calculator, which is built for exactly that and shows engineering and E-notation too. The two tools complement each other.

Related Calculators

Some jobs are quicker in a dedicated tool. The All-in-One Calculator adds a standard mode and a history list, the Log Calculator and Exponent Calculator show their working step by step, and the PEMDAS Calculator explains the order of operations behind any expression.