Basic arithmetic
Add, subtract, multiply and divide with a clear, responsive keypad.
✦ MegaToolsHub Calculator
Scientific Calculator Online
Solve everyday arithmetic and advanced scientific calculations with a fast, accurate and mobile-friendly calculator.
⚡ Instant results
🔒 Private in your browser
✓ No login required
📱 Mobile friendly
Scientific Calculation
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Your reliable online scientific calculator
Perform quick arithmetic, trigonometric calculations, logarithms, roots, powers and constants in one clean interface. Your calculations run locally in the browser and your recent history remains available on the same device.
Scientific functions
Use sine, cosine, tangent, logarithms, roots, powers, π and e.
Reusable history
Select a previous result to use it instantly in a new calculation.
Degree and radian modes
Switch angle units before using trigonometric functions.
Keyboard support
Enter numbers and operators, then press Enter for faster calculation.
Free and responsive
Use all functions on desktop, tablet or mobile without registration.
Choose DEG for degree-based angles or RAD
for radians before using sin, cos or tan.
Frequently asked questions
Is this scientific calculator free?
Yes. The calculator is free to use and does not require an account.
Does it support degrees and radians?
Yes. Use the DEG and RAD switch above the calculator display.
Is my calculation data uploaded?
The calculations are performed in your browser. History is stored locally on the same device.