Money & Finance · Free tool
Scientific Calculator
Expression-based scientific calculator with trig, log, sqrt, exp, pi, e. DEG/RAD toggle. History. Free, no eval.
Result
8
Functions: sin cos tan asin acos atan log ln sqrt exp abs floor ceil round. Constants: pi e. Operators: + - * / ^. Powers right-associative (2^3^2 = 2^9 = 512). Press Enter to save to history.
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What it does
Expression-based scientific calculator with the standard kit: trig (sin, cos, tan + inverses), log/ln, sqrt, exp, abs, floor/ceil/round, plus pi and e. Operator precedence, parentheses, and right-associative power (2^3^2 = 512). DEG ↔ RAD toggle for trig.
Hand-rolled recursive-descent parser — no eval, no security risk. Press Enter to save the expression to history.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/scientific-calculator" width="100%" height="720" frameborder="0" loading="lazy" title="Scientific Calculator" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Type an expression, e.g. sin(45) + sqrt(2).
- Read the result instantly.
- Toggle DEG/RAD if you're doing trig.
- Press Enter or click 'Save to history' to keep recent calculations.
Frequently asked questions
- Can I use variables?
- Not yet. Constants pi and e are built in. Variables are on the roadmap.
- What about complex numbers?
- Real numbers only. sqrt(-1) returns NaN; for complex math, use a dedicated tool like Wolfram Alpha or a Python REPL.
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