Scientific Calculator – Free Online Calculator
Scientific Calculator
A full scientific calculator that runs in your browser — trigonometry, logarithms, powers, and a running history. No app to install.
Scientific Calculator
Tip: keyboard supported — digits, + − * / ^ % ! ( ) and Enter
History
No calculations yet
How to Use the Scientific Calculator
It works like the calculator on your desk, with a keyboard bonus:
- Click the keys — or type. Digits, + − × ÷, ^, %, !, and parentheses all work from your keyboard. Press Enter (or =) for the result.
- Use the functions. sin, cos, tan, their inverses, ln, log, square and cube roots, powers of ten — the expression line shows exactly what you typed.
- Read the answer. The big display shows the result; the smaller line keeps your expression so you can spot a typo.
- Check your history. Every calculation is saved below. Clear it any time.
Common Questions
Is this calculator really free?
Yes — free, no account, no limits.
How are the answers computed?
With a purpose-built math parser inside the page — never the risky eval() shortcut, so stray keystrokes cannot run code.
Does it need the internet?
Only to load the page. Every calculation happens on your own device; nothing is sent to a server.
Can I use my keyboard?
Yes. Digits, + − * / ^ % !, parentheses, and Enter are all supported.