Scientific Calculator

DEG

RAD

📜 History

Your calculations will appear here

🔢 Constants

3.14159...

Euler's Number

2.71828...

Golden Ratio

1.61803...

√2

Pythagoras

1.41421...

Speed of Light

2.998×10⁸

Gravitational

6.674×10⁻¹¹

Nₐ

Avogadro

6.022×10²³

Gravity (Earth)

9.80665 m/s²

Professional Scientific Calculator

Every function you need — from basic arithmetic to advanced trigonometry and combinatorics

📐

Trig & Hyperbolic

sin, cos, tan, sinh, cosh, tanh — and all their inverses. DEG/RAD toggle for any use case

🔢

Memory Functions

M+, M–, MR, MS, MC — full memory system to store and recall values across calculations

📜

Calculation History

Every calculation is saved. Click any history entry to recall the result into your current calculation

🔬

Physics Constants

π, e, φ, √2, speed of light, Avogadro's number — one click to insert into your expression

Frequently Asked Questions

What is the difference between DEG and RAD mode?

DEG (degree) mode is used for everyday angles: a full circle is 360°. RAD (radian) mode is used in mathematics and physics: a full circle is 2π radians. Always match the mode to your problem — trig functions give completely different results in each mode.

How do I use the INV button?

INV (inverse) toggles alternate functions for buttons. For example: sin becomes sin⁻¹ (arcsin), cos becomes cos⁻¹ (arccos), log becomes 10ˣ, ln becomes eˣ, √x becomes x². Press INV again to toggle back.

How does the memory work?

MS saves the current number to memory. MR recalls the stored memory value. M+ adds the current number to memory. M– subtracts from memory. MC clears memory. The "M" indicator appears on the display when memory contains a value.

How do I calculate factorial (n!)?

Enter a positive integer and press the n! button. For example: 5 → n! = 120. Factorials grow very fast: 20! ≈ 2.4 × 10¹⁸. Values above 170 will return Infinity in JavaScript's floating-point arithmetic.

How do I calculate ⁿCᵣ and ⁿPᵣ?

Enter n, then press ⁿCᵣ or ⁿPᵣ, then enter r and press =. The calculator prompts you for r. ⁿCᵣ (combinations) = n!/(r!(n-r)!). ⁿPᵣ (permutations) = n!/(n-r)!.

How It Works

Calculate in 3 Steps

Enter Expression

Type your mathematical expression using the keypad or keyboard.

Use Functions

Access sin, cos, tan, log, sqrt, and other advanced functions.

Get Result

Press equals to compute — results are shown instantly.