Basic Calculator
Use this basic online calculator to perform simple arithmetic operations including addition, subtraction, multiplication, and division.
For more advanced calculations, try our Scientific Calculator.
How to Use the Basic Calculator
Our basic calculator provides a simple and intuitive way to perform everyday arithmetic calculations. Whether you're balancing your checkbook, calculating tips, or doing homework, this calculator handles all fundamental math operations.
Basic Operations
The calculator supports four basic arithmetic operations:
- Addition (+) - Adds two or more numbers together
- Subtraction (−) - Subtracts one number from another
- Multiplication (×) - Multiplies numbers together
- Division (÷) - Divides one number by another
Calculator Functions
| Button | Function | Description |
|---|---|---|
| AC | All Clear | Clears all entries and resets the calculator |
| Back | Backspace | Deletes the last digit entered |
| ± | Plus/Minus | Changes the sign of the current number |
| % | Percent | Converts the number to a percentage (divides by 100) |
| M+ | Memory Add | Adds the current value to memory |
| M- | Memory Subtract | Subtracts the current value from memory |
| MR | Memory Recall | Displays the value stored in memory |
| Ans | Answer | Recalls the last calculated result |
| EXP | Exponent | Enters scientific notation (×10^n) |
| RND | Random | Generates a random number between 0 and 1 |
Order of Operations
This basic calculator performs operations in the order they are entered (left to right), not following PEMDAS/BODMAS rules. Each operation is calculated as it is entered. For calculations requiring proper order of operations, use our Scientific Calculator.
What is a Basic Calculator?
A basic calculator, also known as a four-function calculator, is a digital or electronic device designed to perform fundamental arithmetic operations. Unlike scientific or graphing calculators, basic calculators focus on simplicity and ease of use, making them ideal for everyday calculations.
The first electronic calculators were developed in the early 1960s, and basic calculators became widely available to consumers in the 1970s. Today, online calculators provide the same functionality with added convenience and accessibility.
Common Uses for Basic Calculators
- Calculating tips at restaurants
- Balancing checkbooks and personal finances
- Computing sales tax
- Splitting bills among friends
- Basic homework and school assignments
- Quick mental math verification
- Shopping calculations and price comparisons
Tips for Using Memory Functions
Memory functions allow you to store a value and recall it later, which is useful for multi-step calculations:
- Use M+ to add the displayed value to memory
- Use M- to subtract the displayed value from memory
- Use MR to recall the stored value
- Memory is preserved across calculations until you close the page
Example Calculation
To calculate 15 + 7 × 3:
- Enter 15, press +
- Enter 7, press =
- Result: 22 (remember: left-to-right calculation)
- Press ×, enter 3, press =
- Result: 66
Frequently Asked Questions
What is a basic calculator?
A basic calculator, also known as a four-function calculator, is a digital tool designed to perform fundamental arithmetic operations: addition, subtraction, multiplication, and division. It's ideal for everyday calculations like balancing checkbooks, calculating tips, or doing simple homework.
How do I use a basic calculator online?
Simply enter numbers using the on-screen buttons or your keyboard, select an operation (+, -, ×, ÷), enter the second number, and press equals (=) to see the result. You can also use memory functions (M+, M-, MR) to store and recall values.
What's the difference between a basic and scientific calculator?
A basic calculator handles simple arithmetic (add, subtract, multiply, divide), while a scientific calculator includes advanced functions like trigonometry, logarithms, exponents, and follows proper order of operations (PEMDAS/BODMAS).
Does this calculator follow order of operations?
This basic calculator performs operations left-to-right as entered, not following PEMDAS/BODMAS rules. For calculations requiring proper order of operations, use our Scientific Calculator instead.