CalculatorMode

CalculatorMode is a free, professional-grade online calculator designed for both everyday calculations and complex scientific computations. Built with precision arithmetic using the Decimal.js library, our calculator ensures accurate results for financial calculations, scientific research, engineering work, and academic studies.

Whether you're a student working on homework, a professional managing budgets, or a scientist performing complex calculations, CalculatorMode provides the tools you need with a clean, intuitive interface that works seamlessly across all devices.

The history of calculators spans thousands of years, from ancient counting tools to modern digital computers. The abacus, invented around 2700–2300 BCE in Sumeria, was one of the first calculating devices, using beads on rods to perform arithmetic operations.

In 1642, Blaise Pascal invented the Pascaline, the first mechanical calculator capable of addition and subtraction. This was followed by Gottfried Wilhelm Leibniz's Stepped Reckoner in 1672, which could perform multiplication and division. These mechanical calculators laid the groundwork for modern computing.

The 20th century brought electronic calculators, with the first desktop electronic calculator introduced in the 1960s. Pocket calculators became widespread in the 1970s, revolutionizing how people performed calculations in daily life. Today, online calculators like CalculatorMode combine the power of advanced computing with accessibility, offering sophisticated mathematical capabilities through any web browser.

Our basic calculator provides essential arithmetic operations for everyday calculations:

Arithmetic Operations

• Addition (+): Combine numbers. Example: 25 + 17 = 42
• Subtraction (−): Find the difference. Example: 100 − 35 = 65
• Multiplication (×): Multiply values. Example: 12 × 8 = 96
• Division (÷): Divide numbers. Example: 144 ÷ 12 = 12
• Percentage (%): Calculate percentages. Example: 50% of 200 = 100

Memory Functions

Memory functions allow you to store and recall values during calculations:

• MS (Memory Store): Store the current display value in memory
• MR (Memory Recall): Retrieve the stored memory value
• M+ (Memory Add): Add the current value to memory. Example: Store 50, calculate 30, press M+ → Memory = 80
• M− (Memory Subtract): Subtract the current value from memory. Example: Memory = 100, display 25, press M− → Memory = 75
• MC (Memory Clear): Clear all values stored in memory

Practical Examples

The scientific calculator expands capabilities with advanced mathematical functions for engineering, physics, and higher mathematics:

Trigonometric Functions

• sin (Sine): Calculate sine of an angle. Example: sin(30°) = 0.5
• cos (Cosine): Calculate cosine. Example: cos(60°) = 0.5
• tan (Tangent): Calculate tangent. Example: tan(45°) = 1
• sin⁻¹, cos⁻¹, tan⁻¹ (Inverse): Find angles from ratios. Example: sin⁻¹(0.5) = 30°

Logarithmic Functions

• log (Common Log): Base-10 logarithm. Example: log(100) = 2
• ln (Natural Log): Natural logarithm (base e). Example: ln(e) = 1

Power and Root Functions

• x² (Square): Square a number. Example: 7² = 49
• xʸ (Power): Raise to any power. Example: 2⁵ = 32
• √ (Square Root): Find square root. Example: √144 = 12
• 1/x (Reciprocal): Calculate inverse. Example: 1/4 = 0.25

Special Functions

• n! (Factorial): Product of all positive integers up to n. Example: 5! = 5×4×3×2×1 = 120
• |x| (Absolute Value): Distance from zero. Example: |−15| = 15
• π (Pi): Mathematical constant ≈ 3.14159
• e (Euler's Number): Mathematical constant ≈ 2.71828

Advanced Examples