Basic Calculator — Free Online Arithmetic Calculator
Use a free online basic calculator for addition, subtraction, multiplication, division, percentages, and memory calculations.
How to Use the Basic Calculator
- Enter numbers using the on-screen keypad or your keyboard, then choose addition, subtraction, multiplication, or division.
- Use the percent key to convert the displayed number to a percentage, and use the sign key to switch between positive and negative values.
- Memory controls let you store a running value: M+ adds to memory, M− subtracts from it, MR recalls it, and MC clears it.
Frequently Asked Questions
Can I use my keyboard with this calculator?
Yes. Use number keys and the standard +, -, *, /, and % keys. Press Enter or equals to calculate, Escape to clear, and Backspace to remove the last digit.
What do the calculator memory buttons do?
M+ adds the displayed value to memory, M− subtracts it, MR recalls the stored value, and MC clears memory.
How does the percent button work?
The percent button divides the displayed number by 100. For example, entering 25 and pressing percent displays 0.25.
How to use this estimate
This calculator is an educational planning tool. Results are based on the figures and assumptions entered by the reader, use standard mortgage mathematics, and are not a loan offer, approval, or substitute for a lender's Loan Estimate. Taxes, insurance, fees, mortgage insurance, and available rates vary by borrower, property, lender, and location.
Review the assumptions, compare more than one scenario, and confirm the final numbers with a licensed mortgage professional before making a financial commitment.