Scientific Calculator

Free online Scientific Calculator with trig functions, logarithms, powers, roots, factorial, memory, and DEG/RAD toggle.

No signup required • Instant results • Works on mobile

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Functions Available

ButtonFunctionExample
sin, cos, tanTrigonometric (DEG/RAD)sin(30°) = 0.5
lnNatural log (base e)ln(e) = 1
logLog base 10log(100) = 2
√Square root√16 = 4
x²Square5² = 25
x^yPower2^10 = 1024
πPi (3.14159...)2π ≈ 6.2832
n!Factorial5! = 120
1/xReciprocal1/4 = 0.25

How to Use This Scientific Calculator

  1. Click DEG/RAD to toggle between degrees and radians.
  2. Use number buttons and operators to build your expression.
  3. Click = to see result.
  4. Click AC to clear everything, ⌫ to delete last character.

Frequently Asked Questions

What functions does a scientific calculator have?

Trigonometric (sin, cos, tan), logarithms (log, ln), powers (x², x^y), roots (√), factorial (n!), pi (π), and memory functions.

What is the difference between log and ln?

log is base 10. ln is base e (≈2.718). log(100) = 2, ln(e) = 1.

What is factorial used for?

Factorial (n!) multiplies all integers 1 to n. Used in probability, permutations, combinations.

How do I use degrees vs radians?

Degrees (0-360) for everyday math. Radians (0-2π) for calculus. Toggle DEG/RAD.

Can I use this scientific calculator for exams?

Check exam rules. Most exams allow physical scientific calculators, not online ones.

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