Basic Math · free · no sign-up
Programmable Calculator
Write your own formulas with variables and evaluate them, or load ready-made formulas for circle area, Pythagoras, BMI and compound interest.
Programmable Logic Solver
Create custom formulas & calculate anything
Formula expression
Calculation Result
About the Programmable Calculator
Write your own formulas with variables and evaluate them, or load ready-made formulas for circle area, Pythagoras, BMI and compound interest.
How to use the Programmable Calculator
- Type an expression such as
PI * r^2, or click a preset like Circle Area. - Enter values for the variables the formula uses.
- Press Calculate.
Tips
- Use ^ for powers and brackets to control the order of operations.
- Save time by reusing the same formula with different values.
Frequently asked questions
What functions can I use?
Standard arithmetic operators plus common maths functions and constants such as PI.