Basic calculator
Add, subtract, multiply and divide with parentheses and percentages.
Sources and adopted values
How do I use this page?
- Enter data and choose a variant.
- Click Calculate and inspect the breakdown.
What this page does not do: Real-number calculator. Percent is unary: 200 + 10% = 200.1, not a retail-calculator percentage rule.
Further reading
Theory — Basic calculator
Order: parentheses, multiplication and division, addition and subtraction. 15% means 15/100.
Frequently asked questions
How does the calculation work?
Order: parentheses, multiplication and division, addition and subtraction. 15% means 15/100.
What are the limitations?
Real-number calculator. Percent is unary: 200 + 10% = 200.1, not a retail-calculator percentage rule.
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