Scientific Calculator
A full scientific calculator in your browser — trig in degrees or radians, logs, powers, roots, factorials, permutations and combinations, memory, history and fractions — with keyboard support.
- Your data never leaves your device
- 100% free
- No sign-up
- Works offline after first load
How to use the scientific calculator
- Type an expression or tap the keys — the result previews as you go.
- Use 2nd for inverse functions, DEG/RAD/GRAD for angles, and the memory keys if you need them.
- Press = or Enter; reuse any result from the history, copy it, or show it as a fraction.
About Scientific Calculator
Everything you expect from a scientific calculator, right in your browser. Type or tap expressions with brackets and see the result as you type; use trigonometric functions in degrees, radians or gradians, their inverses and hyperbolic versions, logarithms in any base, powers and roots, factorials, permutations, combinations and modulo.
Memory keys, Ans and a history you can click to reuse make longer calculations easy, results can be shown in fixed, scientific or engineering notation or as a fraction, and everything works with the keyboard.
Good for
- School and college maths and physics
- Engineering and science homework
- Quick everyday calculations
Tip: Press 2nd before sin to get sin⁻¹ — the key labels change to show the second functions.
Frequently asked questions
How do I switch between degrees and radians?
Tap the DEG key — it cycles through DEG, RAD and GRAD. The current mode is shown at the top of the display.
Where are the inverse functions?
Tap 2nd: sin becomes sin⁻¹, x² becomes x³, log becomes 10ˣ, ln becomes eˣ and so on.
Can I type with the keyboard?
Yes — type numbers, + − * / ^ ( ), function names like sin( or sqrt(, ! for factorial, then press Enter. Esc clears.
What do nPr and nCr mean?
Permutations and combinations: 5 nPr 2 = 20 ordered choices, 5 nCr 2 = 10 unordered choices.
Is my data stored or sent anywhere?
No. Everything is calculated in your browser. Your recent calculations are kept only in this browser (History), and a shared link contains just the numbers you entered.
Why does sin(90) not give 1?
The calculator is probably set to radians. Switch to DEG for degrees and sin(90) gives 1.