Loading Inkwell...
A fast, simple and accurate online calculator for addition, subtraction, multiplication, division and percentages.
Tip: You can use your keyboard to enter numbers and operators. Press Enter to calculate, Backspace to delete and Escape to clear the calculator.
Enter numbers by clicking the calculator buttons or using your keyboard. Choose an arithmetic operation such as addition, subtraction, multiplication or division, then enter the next number. Press the equals button to see the result. You can also use the percentage button, decimal point, backspace and clear buttons when needed.
Type a number using the calculator or your keyboard.
Select +, −, ×, ÷ or percentage.
Press = or Enter to instantly calculate.
A calculator takes the numbers and mathematical operators you provide and evaluates them according to standard arithmetic rules. For example, when you enter 25 + 15, the calculator interprets the plus symbol as an addition operation and returns 40. This calculator also handles multiplication, division, subtraction, decimals and percentages. Calculations are performed directly in your browser, so normal calculations do not need to be sent to a server.
Addition: 10 + 5 = 15
Subtraction: 10 − 5 = 5
Multiplication: 10 × 5 = 50
Division: 10 ÷ 5 = 2
The percentage button converts a number into its percentage value. For example, 50% is represented as 0.5 in a calculation.
Common questions about using the calculator
It supports addition, subtraction, multiplication, division, decimals and percentages.
Yes. You can type numbers and operators directly from your keyboard. Press Enter to calculate, Backspace to delete and Escape to clear.
Calculations are kept in the current page session so you can review recent results. They are not automatically saved as a permanent account history.
Yes. Click the copy icon next to the result to copy the current answer to your clipboard.
Need help understanding a calculation, percentage or mathematical operation? Ask your question and find the answer.