Math Calculators
Basic Calculator
Calculate with a full keypad, memory controls and reusable history.
Free foreverRuns in your browserNo sign-up
About the Basic Calculator
This basic calculator handles everyday arithmetic in a clean keypad layout, including addition, subtraction, multiplication, division, percentages and grouped expressions with parentheses.
Memory controls let you store and reuse a result, while the history panel keeps recent calculations available during the current session. You can also type a full expression directly and press Enter to solve it.
Calculations run locally in your browser through a dedicated expression parser. It does not use unsafe code evaluation and does not send your numbers to a server.
Key features
- Addition, subtraction, multiplication and division
- Percentages and parentheses
- Memory clear, recall, add and subtract controls
- Recent calculation history and keyboard input
How to use
- 1Enter an expression with the keypad or your keyboard.
- 2Use parentheses to control the order of operations and % to convert a value to a percentage.
- 3Press = or Enter to calculate, then select a history item to reuse it.
Frequently asked questions
- Does the calculator follow the order of operations?
- Yes. Parentheses and exponents are evaluated first, followed by multiplication and division, then addition and subtraction.
- How does the percent button work?
- The percent symbol divides the value before it by 100. For example, 20% becomes 0.2, so 500 x 20% returns 100.
- What do MC, MR, M+ and M- mean?
- MC clears memory, MR recalls it, M+ adds the displayed result to memory, and M- subtracts the displayed result from memory.
- Are my calculations saved or uploaded?
- No. The calculator and its temporary history run entirely in your browser. Reloading the page clears the history.