Scientific Calculator
A powerful, free math tool for advanced calculations, from trigonometry to logarithms.
Free Online Scientific Calculator Fast, Private, Global
A powerful scientific calculator for students and professionals. Free forever, fast, and privacy first everything runs locally in your browser. No sign ups, no tracking. Top, best in class usability and lifetime free, unlimited use.
Why people love this calculator
Core math covered
Trigonometry (sin, cos, tan + inverses), ln/log10, exponents and powers (x^y, x², x³), roots (√, ⁿ√y), factorial (n!), reciprocal (1/x), and percent.
DEG/RAD + hyperbolic
Switch angle modes instantly (DEG/RAD) and use sinh, cosh, tanh when needed.
Privacy by design
100% confidential and secure. Calculations run locally your data never leaves your device.
Keyboard shortcuts
Type naturally with full keyboard support. Arrow keys move the cursor inside the expression.
Memory keys
MC, MR, M+, M− included. The “M” indicator shows when a value is stored.
Mobile friendly
Optimized for Chrome, Edge, Firefox, and Safari on desktop and mobile.
Popular uses worldwide
Education & Exams
Homework, labs, and practice for algebra, trigonometry, physics, chemistry, statistics. Follow your exam policy on calculator use.
Engineering & Science
Quick checks for angles, unit-less math, logs, powers, and roots.
Finance & Everyday Math
Percent changes, growth/decay factors, and quick sanity checks.
Global users
USA, UK, Canada, Australia, India, EU (Germany, France, Spain, Italy, Netherlands), UAE, Saudi Arabia, Singapore, Malaysia, Philippines, Indonesia, Japan, South Korea, Nigeria, South Africa, Egypt, Brazil, Mexico, Argentina if your browser works, our calculator works.
Lifetime free
Free & unlimited use no paywalls, no watermarks, no sign ups.
Accessibility
Clear contrast, large buttons, and ARIA live regions for dynamic results.
Note: Always follow your local exam rules on calculator usage.
How to use
- Type your expression or tap buttons. Use parentheses for clarity.
- Toggle DEG/RAD for trigonometric functions.
- Use % for quick percentage math (e.g., 200+10% → 220).
- Memory: M+ (add), M− (subtract), MR (recall), MC (clear).
- Press “=” or Enter to calculate. Use ←/→ to move the cursor inside the expression.
Examples
- DEG mode: sin(30) → 0.5
- Logs: log(1000) → 3, ln(e) → 1
- Powers: 2^10 → 1024; x² and x³ buttons for quick squares/cubes
- Roots: √(144) → 12; 27^(1/3) → 3 (ⁿ√y)
- Factorial: 5! → 120
- Percent: 200+10% → 220, 200-10% → 180
- Reciprocal: 1/x converts 8 → 0.125
Global availability (GEO)
Built for users in the USA, UK, Canada, Australia, India, and across the EU (Germany, France, Spain, Italy, Netherlands), Middle East (UAE, Saudi Arabia), Asia (Singapore, Malaysia, Philippines, Indonesia, Japan, South Korea), Africa (Nigeria, South Africa, Egypt), and Latin America (Brazil, Mexico, Argentina). If your browser works, our scientific calculator works.
Frequently Asked Questions
Is it private and secure?
Yes. Calculations happen in your browser no uploads, no tracking. Your information is 100% confidential and secure.
Does it support degrees and radians?
Yes. Switch modes using the DEG/RAD button at the top of the keypad.
What about percent?
Use percent naturally: 200+10% and 200-10% behave as expected.
Is it really free forever?
Yes. Lifetime free and unlimited use no sign ups, no paywalls, no watermarks.
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