Scientific Calculator
What Is a Scientific Calculator?
A scientific calculator performs more advanced mathematical calculations than a standard calculator.
Beyond addition, subtraction, multiplication, and division, a scientific calculator can handle functions such as powers, square roots, logarithms, and trigonometry.
Scientific calculators are commonly used by students and professionals working with mathematics, science, engineering, and other technical subjects.
How to Use This Scientific Calculator?
Using the calculator is simple.
Step 1: Enter Your Calculation
Use the calculator buttons to enter the numbers and mathematical operations you need.
For example:
25 + 15 × 3
Step 2: Calculate the Result
Press the equals button to calculate the expression.
The calculator follows the normal mathematical order of operations.
For the example above:
15 × 3 = 45
Then:
25 + 45 = 70
So the answer is:
70
Step 3: Understand the Result
Where applicable, the calculator provides working or an explanation so you can understand how the results are obtained.
Scientific Calculator Functions
Our scientific calculator includes several useful mathematical functions.
Basic Arithmetic
You can perform common operations including:
- Addition (+)
- Subtraction (−)
- Multiplication (×)
- Division (÷)
- Percentages (%)
- Parentheses
For example:
25 + 15 = 40
Powers and Exponents
Use the power function to calculate numbers raised to an exponent.
For example:
2⁵ = 32
This means:
2 × 2 × 2 × 2 × 2 = 32
Powers are useful in mathematics, science, computing, and many other areas.
The square root function allows you to find the number that produces a given value when multiplied by itself.
Square Roots
For example:
√144 = 12
because:
12 × 12 = 144
Logarithms
A logarithm helps determine the exponent needed to produce a particular number.
For example:
log₁₀(100) = 2
because:
10² = 100
Logarithms are commonly used in mathematics, science, engineering, and computing.
Trigonometric Functions
The calculator can also be used for common trigonometric functions:
- sin
- cos
- tan
For example:
sin(30°) = 0.5
When using trigonometric functions, make sure the calculator is set to the appropriate angle mode, such as DEG for degrees or RAD for radians.
Pi (π)
Pi is a mathematical constant approximately equal to:
π ≈ 3.14159
It is commonly used in calculations involving circles.
For example, the area of a circle is:
Area = πr²
If the radius is 5:
Area = π × 5²
Area ≈ 78.54
Euler’s Number (e)
The constant e is an important mathematical constant with a value of approximately:
e ≈ 2.71828
It is frequently used in exponential growth, logarithms, probability, and other areas of mathematics.
Scientific Calculator Functions
A basic calculator is useful for simple arithmetic such as addition, subtraction, multiplication, and division.
A scientific calculator provides additional mathematical functions.
| Function | Basic Calculator | Scientific Calculator |
|---|
| Addition | ✓ | ✓ |
| Subtraction | ✓ | ✓ |
| Multiplication | ✓ | ✓ |
| Division | ✓ | ✓ |
| Percentages | ✓ | ✓ |
| Powers | Sometimes | ✓ |
| Square roots | Sometimes | ✓ |
| Logarithms | — | ✓ |
| Trigonometry | — | ✓ |
| π | Sometimes | ✓ |
| e | — | ✓ |
If you only need simple arithmetic, a basic calculator may be sufficient. For more advanced mathematical calculations, a scientific calculator provides additional functions.
When Should You Use a Scientific Calculator?
A scientific calculator can be useful when working with:
- School mathematics
- Algebra
- Trigonometry
- Geometry
- Exponents
- Logarithms
- Scientific calculations
- Engineering calculations
- Physics calculations
- University mathematics
It can also be useful when you want to quickly check a calculation or verify your own working.
Scientific Calculator Tips
Use Parentheses
Parentheses can help control the order in which calculations are performed.
For example:
(5 + 3) × 2 = 16
Without the parentheses, the calculation may produce a different result depending on the expression.
Check Your Angle Mode
When using sin, cos, or tan, check whether you are using degrees or radians.
DEG means degrees.
RAD means radians.
Using the wrong mode can produce an unexpected answer.
Follow the Order of Operations
Mathematical expressions generally follow the order of operations.
A common way to remember it is:
Parentheses → Powers → Multiplication/Division → Addition/Subtraction
For example:
2 + 5 × 3
First:
5 × 3 = 15
Then:
2 + 15 = 17
So the answer is 17, not 21.
Try More Math Calculators
Need to solve a different type of problem? Explore our other calculators:
- Percentage Calculator
- Fraction Calculator
- Algebra Calculator
- Square Root Calculator
- Exponent Calculator
- Ratio Calculator
- Average Calculator
- Geometry Calculator