Basic Calculator Online: Add, Subtract, Multiply and Divide
A basic calculator is useful for quick arithmetic while shopping, studying, planning a budget or checking a value. Enter the expression carefully and verify important calculations independently.
Use the basic calculator
- Enter the first number and choose an arithmetic operation.
- Enter the next number, then continue with the expression you need.
- Use the clear control to remove an incorrect entry and start again.
- Review the displayed result and the order of operations for expressions with more than one operator.
- Copy or write down the result if you need it elsewhere.
Operations and order of operations
The calculator supports common arithmetic operations. Multiplication and division may be evaluated before addition and subtraction; use parentheses when the intended order is not obvious.
Check results used for money or safety
Rounding, taxes, fees and unit conversions can change practical totals. Confirm financial, engineering, medical or safety-critical calculations with an appropriate source.
Frequently asked questions
Does a basic calculator replace a spreadsheet?
No. It is intended for quick arithmetic, while spreadsheets are better for repeated calculations, tables and audit trails.
Why does 2 + 3 × 4 equal 14?
Multiplication is normally evaluated before addition. Use parentheses if you intend a different order.
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