Basic Calculator
Add, subtract, multiply, and divide with a clean keypad.
Updates as you tap — runs entirely in your browser.
How this basic calculator works
This is a straightforward four-function calculator for addition, subtraction, multiplication, and division. It runs entirely in your browser: tap numbers and operators, and the display updates as you go. Nothing is sent to a server, which makes it handy for quick checks while budgeting, shopping, or doing homework.
Chaining operations
Enter a value, choose an operation, enter the next value, then press equals. You can chain further operations on the result. CE clears the current entry; C clears the whole calculation. That matches the mental model of most handheld calculators.
Worked example
To compute a tip-style total such as 48 + 48 × 0.15, remember that this simple chain calculator typically applies operations left-to-right as you enter them — it is not a full algebraic precedence engine. For “15% of 48 then add to 48,” compute 48 × 0.15 first (or use the percentage calculator), then add.
How to use it
- Tap digits to build a number (including a decimal point when needed).
- Choose +, −, ×, or ÷.
- Enter the next number and press =.
- Use CE/C when you need to restart an entry or the whole problem.
When to use this vs other tools
Use this keypad for quick arithmetic. Use the percentage calculator for “X% of Y,” part-to-whole, and percent change — those questions are easy to mis-key as chained operations. Use the scientific calculator for trig, logs, and powers.
Privacy
Keystrokes stay in your browser for the calculation. We do not require a login. See the Privacy Policy for how advertising technologies may work on content pages elsewhere on the site.
Frequently asked questions
Does × happen before + automatically?
No. This tool applies operations in the order you enter them (left-to-right chaining), similar to many handheld four-function calculators — not full algebraic precedence.
What does CE vs C do?
CE clears the current entry; C clears the entire calculation including a stored operator.
Why do long decimals look odd?
Binary floating-point can produce tiny rounding artifacts. Round to the precision your problem needs.
Limitations
Very large or tiny results may show floating-point quirks. For scientific functions, use the scientific calculator page instead.