Calculators

Percentage, math and everyday calculation tools.

7 tools available

Choose a tool

Example: a bill is $480. How much is 15% of it?

Example: you answered 36 out of 45 questions correctly. What percentage did you score?

Example: a product price increased from $200 to $270. What is the percentage increase?

Calculate the discounted price and the amount saved from the original price.

Calculate V, I, R and P from any two known voltage, current and resistance values.

Calculate mAh/Ah ↔ Wh from battery capacity, energy and nominal voltage.

Calculate voltage drop, percentage and estimated load voltage from circuit and cable inputs.