TotalCalcPro Scientific Calculator is a free online advanced math tool that goes beyond basic arithmetic. It provides professional-grade functions for trigonometry, logarithms, powers, and more – perfect for students, engineers, and anyone needing complex calculations right in their browser.
🔬 Scientific Calculator
Advanced calculator with scientific functions
About Scientific Calculator
This scientific calculator provides advanced mathematical functions for complex calculations including trigonometry, logarithms, exponentials, and more.
Available Functions
| sin, cos, tan | Trigonometric functions |
| sin⁻¹, cos⁻¹, tan⁻¹ | Inverse trigonometric functions |
| log | Logarithm base 10 |
| ln | Natural logarithm (base e) |
| √ | Square root |
| x² | Square |
| x^y | Power function |
| n! | Factorial |
| π | Pi constant (3.14159…) |
| e | Euler’s number (2.71828…) |
Angle Modes
DEG (Degrees): Trigonometric functions use degrees (0-360)
RAD (Radians): Trigonometric functions use radians (0-2π)
How to Use
• Click buttons to build your expression
• Use parentheses for complex calculations
• Switch between DEG and RAD modes for trigonometry
• Press = to evaluate your expression
• Use C to clear or ⌫ to delete last character
Examples
Example 1: sin(30) in DEG mode = 0.5
Example 2: log(100) = 2
Example 3: 2^8 = 256
Example 4: sqrt(144) = 12
Key Features
✓ Trigonometric Functions - sin, cos, tan, and their inverses (sin⁻¹, cos⁻¹, tan⁻¹)
✓ Dual Angle Modes - Switch between degrees (DEG) and radians (RAD)
✓ Logarithmic Functions - Base 10 (log) and natural logarithm (ln)
✓ Power Operations - Square (x²), any power (x^y), and square root (√)
✓ Mathematical Constants - Quick access to π (pi) and e (Euler's number)
✓ Factorial Function - Calculate n! for combinations and permutations
✓ Parentheses Support - Handle complex expressions with proper order of operations
✓ User-Friendly Interface - Clean, colorful design with large buttons
✓ Instant Results - Real-time calculation display
✓ 100% Free - No registration, no downloads, works in any web browser
✓ Mobile Responsive - Works perfectly on phones, tablets, and computers
How to Use - User Guide
Getting Started
- Choose Your Angle Mode
- Click DEG for calculations in degrees (default)
- Click RAD for calculations in radians
- The active mode is highlighted in blue
- Basic Operations
- Click number buttons (0-9) to enter numbers
- Use +, −, ×, ÷ for basic arithmetic
- Click for decimal numbers
- Press = to calculate your result
- Clear and Delete
- C button: Clears everything and starts fresh
- ⌫ button: Deletes the last character entered
- ± button: Changes the sign (positive/negative)
Scientific Functions
Trigonometry:
- sin, cos, tan: Enter the function, then your number, then close with )
- Example: sin(30) in DEG mode = 0.5
- sin⁻¹, cos⁻¹, tan⁻¹: Inverse trigonometric functions
Logarithms:
- log: Base 10 logarithm - Example: log(100) = 2
- ln: Natural logarithm (base e) - Example: ln(e) = 1
Powers and Roots:
- √: Square root - Example: sqrt(144) = 12
- x²: Squares a number - Example: 5x² = 25
- x^y: Any power - Example: 2^8 = 256
Special Functions:
- n!: Factorial - Example: 5! = 120
- π: Pi constant (3.14159...)
- e: Euler's number (2.71828...)
Tips for Complex Calculations
✓ Use ( ) parentheses to control order of operations ✓ Build expressions step by step ✓ Check the top display to see your current expression ✓ Switch angle modes before calculating trigonometric functions
Common Examples
- Find sine of 45°: Set DEG mode → sin(45) → = → Result: 0.7071
- Calculate compound expression: (5+3)×2 → = → Result: 16
- Power calculation: 3^4 → = → Result: 81
- Square root: sqrt(169) → = → Result: 13
This calculator is ideal for students, engineers, scientists, and anyone requiring advanced mathematical calculations.
Related Calculator
Scientific Calculator – Frequently Asked Questions
What is the Scientific Calculator Online?
The Scientific Calculator Online is a free browser-based calculator for advanced math, including trigonometry, logarithms, powers, roots, and basic arithmetic. No downloads or installations are required.
Is this scientific calculator free to use?
Yes, this calculator is 100% free. There are no sign-ups, subscriptions, or hidden fees.
What math functions does it support?
This calculator supports addition, subtraction, multiplication, division, exponents, roots, logarithms, trigonometric functions (sin, cos, tan), and constants like pi and e.
Can I use this calculator on my phone or tablet?
Yes, it is fully mobile-friendly and works on smartphones, tablets, laptops, and desktops.
Do I need to download or install anything?
No installation is required. The calculator works entirely in your web browser.
Is it accurate for advanced math calculations?
Yes, it provides precise results for trigonometry, logarithms, exponents, and other complex calculations.
Can I type calculations using my keyboard?
Yes, most modern browsers allow you to enter numbers and operators using your keyboard for faster input.
Is my calculation data saved or tracked?
No. All calculations are processed locally in your browser. Your data is not stored, shared, or tracked.
Can this calculator help with homework or learning?
Yes, it is ideal for students, teachers, and anyone practicing math. However, it may not be allowed in official exams.