Use M+, M-, MR, and MC for simple stored-value calculations.
General & Everyday calculator
4 Function Calculator
Use a simple 4 function calculator online for quick addition, subtraction, multiplication, and division.
Basic non-scientific calculator
Simple 4-function calculator
Use the keypad or your keyboard for addition, subtraction, multiplication, and division. Square root, percent, sign change, and memory keys are included as small everyday helpers.
- Add
- Subtract
- Multiply
- Divide
M Ready
Keyboard: numbers, decimal, +, -, *, /, Enter or =, Backspace, and Escape.
Result
4 function calculator results
Your results will appear here
Use the calculator and press = to see the result.
Current Expression
Result
Copy the result or continue with another operation from the display.
Recent Calculations
This is a basic calculator for everyday arithmetic. It intentionally excludes graphing, trigonometry, logarithms, variables, and symbolic math.
Calculator overview
Quick 4 Function Calculator Overview
Use this 4 function calculator for everyday addition, subtraction, multiplication, and division. It also includes simple helper keys such as percent, square root, sign change, memory, and keyboard entry.
Enter numbers with the keypad or keyboard, press equals, and review the latest result below.
Guide
4 Function Calculator Guide
This guide explains what a basic four function calculator does, how to use the keypad, and why this page stays intentionally simple.
What This Calculator Does
This 4 function calculator is a simple online tool for everyday arithmetic. It focuses on addition, subtraction, multiplication, and division, with a few familiar helper keys for square root, percent, sign change, clear entry, backspace, and memory.
It is designed as a basic four function calculator online, not a shopping comparison page and not a scientific calculator. The interface is meant to feel familiar if you have used a standard school, office, TI-108-style, or Casio-style basic calculator.
Formula
A four operation calculator uses the standard arithmetic operations. The helper keys apply simple one-step transformations to the current entry.
a + bAdd two values
a - bSubtract the second value from the first
a × bMultiply two values
a ÷ bDivide the first value by the second
√xFind the square root of a non-negative value
x%Use percent as a practical calculator helper for the current value or operation
Example Calculation
45 + 18 = 63 144 ÷ 12 = 12 25 × 4 = 100 √144 = 12 200 × 15% = 30
Basic calculator flow
Enter number - choose operation - press = Use CE, backspace, or AC if you need to correct the entry.How to Use
- 1Click or type a number
Use the on-screen keypad or your keyboard.
- 2Choose an operation
Select +, -, ×, or ÷ for the four basic operations.
- 3Enter the next number
Use decimals, sign change, percent, or square root if needed.
- 4Press =
The result section will show the current expression and final result.
- 5Correct or reset
Use CE or backspace for the current entry, and AC to clear all.
Tips / Notes
- This is a basic non-scientific calculator for quick everyday use.
- It is useful for school basics, shopping math, office work, and simple percentages.
- Square root and percent are included as helper keys, but advanced scientific functions are not.
- Use AC to reset the calculator to its initial empty state.
- Use memory keys for simple stored-value workflows without making the interface complicated.
- Graphing and scientific menus are intentionally excluded to keep the page fast and simple.
4 Function Calculator vs Scientific Calculator
A 4 function calculator is for basic arithmetic: addition, subtraction, multiplication, and division. A scientific calculator includes many more advanced operations such as trigonometry, logarithms, powers, constants, and sometimes equation tools.
This page stays intentionally simple. If you need graphing, variables, or advanced functions, use a scientific or graphing calculator instead.
FAQ
4 Function Calculator FAQs
Quick answers about basic calculator functions, square root, keyboard input, memory, and online use.
What is a 4 function calculator?
A 4 function calculator is a basic calculator for addition, subtraction, multiplication, and division. It is meant for quick everyday arithmetic rather than advanced scientific or graphing work.
What are the four functions on a basic calculator?
The four core functions are add, subtract, multiply, and divide. This page also includes simple helper keys such as square root, percent, sign change, and memory.
Is this calculator scientific?
No. This is a basic non-scientific calculator. It does not include trigonometry, logarithms, graphing, variables, matrices, or symbolic math.
Does this 4 function calculator support square root?
Yes. The square root key works for non-negative values, which makes the page useful as a simple 4 function calculator with square root.
Can I use this calculator online for free?
Yes. The calculator runs in your browser and is designed for quick online arithmetic without signup.
Does this work like a TI-108 or standard basic calculator?
It follows a familiar handheld-style flow for everyday calculations, but it is not a replica of any specific TI, Casio, or retail calculator model.
Can I use my keyboard instead of clicking the buttons?
Yes. Number keys, decimal point, +, -, *, /, Enter or =, Backspace, Escape, and percent are supported on desktop keyboards.