Scientific Calculator
A full-featured scientific calculator with trigonometry, logarithms, powers, memory functions, and calculation history — works just like your TI or Casio calculator.
History
No calculation history yet.
How To Use
Basic Operations
Click number and operator buttons just like a physical calculator. Type expressions using parentheses for complex calculations like (3+4)×5.
Scientific Functions
Use scientific functions like sin, cos, tan, log, and ln by clicking the function button then entering the number. Toggle between degrees and radians using the DEG/RAD buttons.
Memory Functions
Use memory functions to store and recall values. M+ adds to memory, M- subtracts from memory, MR recalls the stored value, and MC clears it. A small M indicator appears when memory holds a value.
Example Calculations
- sin(30) [in DEG mode] = 0.5
- cos(60) [in DEG mode] = 0.5
- log(1000) = 3
- ln(e) = 1
- sqrt(144) = 12
- 5! = 120
- 2**10 = 1024
Frequently Asked Questions
How do I calculate sine, cosine, and tangent?
Press the sin, cos, or tan button then enter the angle value and press equals. By default, the calculator is in degree mode, so sin(30) gives 0.5. If you need radians, press the RAD button first, then enter the angle in radians. sin(π/6) in radians also equals 0.5. Switch back to DEG mode with the DEG button for degree calculations.
How do memory functions work?
Press M+ to add the current result to memory. Press M- to subtract from memory. Press MR to recall the stored memory value into your current calculation. Press MC to clear memory back to zero. The M indicator on the display shows when memory holds a value. Memory is useful for multi-step calculations where you need to store an intermediate result.
What is the difference between log and ln?
Log (log₁₀) is the common logarithm using base 10. log(1000) equals 3 because 10³ equals 1000. Ln is the natural logarithm using base e (approximately 2.71828). ln(e) equals 1. Natural log appears in calculus, compound interest, and many scientific formulas. Use log for engineering and chemistry and ln for calculus and financial mathematics.
How do I calculate factorials?
Press the n! button after entering a whole number. For example, press 5 then n! to calculate 5 factorial which equals 120 (5 × 4 × 3 × 2 × 1). Factorials grow very quickly — 10! is 3,628,800 and 20! is over 2 quintillion. The calculator handles factorials up to 170!, beyond which the result exceeds JavaScript's maximum number value.
What does EXP do?
The EXP button enters scientific notation — it inserts "E" into your expression. For example 4.7 EXP 5 means 4.7 × 10⁵, which equals 470,000. EXP -5 gives 0.000047. Scientific notation is used in physics, chemistry, and engineering to express very large or very small numbers concisely. It is equivalent to the E button on a physical scientific calculator.