Calculators

How to Use the Scientific Calculator

2026-11-124 min readBy Apex Tool Station Team

A full scientific calculator with sin, cos, tan, log, ln, powers, roots, factorial, π and memory of past results.

100% free No signup Works in your browser

1. What is the Scientific Calculator?

A free scientific calculator for students, engineers and everyday maths. It handles brackets, powers (^), square roots, factorials, logarithms (log base 10 and natural ln), trigonometry in degrees or radians, π and e. You can also type directly — for example 2^10 + sin(30) — and press Enter. Previous results are listed below.

2. How to use the Scientific Calculator

Here is the whole process, step by step. It takes less than a minute from opening the tool to seeing your result.

1Open the tool and use the on-screen controls — everything runs in your browser.
2Choose an option if the tool offers one — "DEG", "RAD".
3Your result updates as you type — read it below the fields, with its breakdown where shown.

Your result updates as you type — there is nothing to press and nothing to wait for.

Everything runs in your browser — your files and text never leave your device.

3. What you can do with it

Switch between the modes the tool offers — "DEG", "RAD".

4. Tips for best results

Your text never leaves your device — The tool runs entirely in your browser using JavaScript. Nothing is uploaded, so you can paste private documents without worry. That also means there is no account to create and no file to upload.
It works on your phone too — Open the tool in any modern browser on Android or iPhone. The layout adjusts to the screen and everything works the same way on a small screen as on a desktop.
Pick the right option first — The tool offers "DEG", "RAD". Choose the one that matches what you need before you type, so the result comes out the way you expect.
Read the breakdown, not just the headline number — The result updates as you type. The breakdown underneath shows how the number was worked out, which is where mistakes usually show up.