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Scientific Calculator Online — Free, Full-Feature, Mobile-Friendly Tool

Scientific calculator — free online tool

All-in-one calculator for trigonometry, logarithms, powers, roots, factorial, memory, and parentheses. Fast, accurate, and responsive on mobiles, iPads, tablets, laptops, and desktops worldwide.

Mode: Deg

What is a scientific calculator?

A scientific calculator is a versatile computing tool that extends basic arithmetic to advanced functions such as trigonometry, logarithms, exponentials, roots, powers, factorials, and memory operations. It respects mathematical precedence (PEMDAS/BODMAS) and supports parentheses, making it reliable for schoolwork, research, engineering, data analysis, and everyday problem‑solving.

Core features and benefits

  • Trig in Deg/Rad: Instantly switch between degrees and radians for sin, cos, tan, and inverse trig.
  • Logs and exponentials: Compute ln, log, e^x, and 10^x for growth, decay, and scientific notation.
  • Powers and roots: Use x^y, x², x³, √, and ∛ with parentheses for complex expressions.
  • Factorial and random: n! for combinatorics and rand() for simulations and sampling.
  • Memory keys: M+, M-, MR, and MC to store and reuse intermediate values efficiently.
  • Worldwide compatibility: Works in any country or region—no local restrictions, no sliders, and consistent behavior on all devices.

Who should use this calculator?

  • Students: Algebra, trigonometry, physics labs, statistics, exam preparation, and homework checking.
  • Teachers: Live demonstrations, classroom explanations, and creating worked examples quickly.
  • Engineers and professionals: Rapid prototyping of formulas, quick sanity checks, and exploratory calculations.
  • Everyday users: Percentages, growth rates, angles, and measurement conversions without installing apps.

Pro tips for precise results

  • Set the right mode: Confirm Deg vs Rad before doing trigonometry.
  • Use parentheses: Make the order of operations explicit for multi‑step calculations.
  • Round appropriately: Report answers with reasonable significant figures and units when applicable.

How to use this scientific calculator

  1. Choose mode: Tap Deg/Rad to match your problem’s angle measure.
  2. Enter expression: Use numbers, operators, and functions like sin( ), log( ), √( ), x^y, and n!.
  3. Use memory: Store partial results with M+, subtract with M-, recall with MR, and clear with MC.
  4. Evaluate or reset: Press = to compute. Use C for current input or Reset for a clean start.

Frequently asked questions

Use the Deg/Rad toggle above the display. Example: Deg mode → sin(30)=0.5; Rad mode → sin(π/6)=0.5.
Use x^y for exponents, x² and x³ for square and cube, √ and ∛ for roots, and n! for factorial of a whole number.
M+ adds to memory, M- subtracts, MR recalls the value into the display, MC clears memory.
Use ⌫ to delete one character, C to clear the input, and Reset to restore defaults, Deg mode, and empty memory.
Use ln for natural log, log for base‑10, e^x for exponentials, and 10^x for powers of ten. Ensure ln(x) has x>0.

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