CASIO-style Scientific Calculator
A scientific calculator styled after the familiar CASIO fx layout, with trigonometry, logarithms, powers, roots, factorials and π/e — no software to install.
CASIO-style Scientific
Enter an expression using the keypad.
How It Works
This tool replicates the button layout and function set students and professionals recognise from popular CASIO fx-series calculators, running entirely in the browser. It supports the same core scientific functions — trigonometry (with a DEG/RAD toggle), logarithms (log base-10, ln natural), powers, square roots, and factorials — evaluated with standard mathematical operator precedence. It is a free, install-free alternative for exams, homework, or quick engineering calculations when a physical calculator isn’t on hand, though always check your exam’s specific calculator policy before relying on any online tool during a test.
Formula
Same evaluation rules as a standard scientific calculator: BODMAS precedence, DEG/RAD-aware trig, log = base 10, ln = natural log.
Frequently Asked Questions
Is this the same as a real CASIO calculator?
It replicates the familiar layout and core scientific functions (trig, logs, powers, roots, factorials) of popular CASIO fx-series calculators, but it is an independent web tool — not CASIO software, and not affiliated with CASIO Computer Co.
Can I use this in an exam?
Check your exam’s calculator policy first — many exams require a specific approved physical calculator model and disallow phones, laptops, or web tools entirely. Use this for practice and homework, not as a substitute for an approved exam calculator.
Does it support degree and radian modes?
Yes — toggle DEG/RAD to control how trigonometric functions (sin, cos, tan) interpret angle inputs.
What functions are available?
Trigonometric functions, logarithms (log, ln), powers (x², xʸ), square root, factorial (n!), and the constants π and e — the same core set as the Scientific Calculator, in a CASIO-familiar layout.
Is it free to use?
Yes, completely free with no signup, ads, or installation — it runs directly in your browser on any device.