Online Calculator
A browser calculator for the four basic operations, with a percent key, sign change, backspace and chained calculations across several steps.
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Note: These calculations are for informational purposes only and do not replace professional tax or financial advice. All information without guarantee.
FAQ
Frequently Asked Questions
How do I calculate percentages on the calculator?
Percentage: value × percentage ÷ 100. Example: 250 × 19 ÷ 100 = 47.50 EUR. On calculators with a % key: enter 250 × 19% directly.
How do I calculate a square root?
Square root: √x. Use the √ button or x^0.5. Example: √144 = 12. nth root: x^(1/n). Example: cube root of 27: 27^(1/3) = 3.
What does CE vs. C do on a calculator?
"CE" (Clear Entry) clears only the last entered number. "C" (Clear) clears the current input but not the memory. "AC" (All Clear) clears everything including memory.
How do I calculate powers and logarithms?
Power: base^exponent (e.g. 2^10 = 1,024). Logarithm: log(x) = base-10 logarithm; ln(x) = natural logarithm (base e). Example: log(1,000) = 3, because 10^3 = 1,000.
Guide
What is the Online Calculator?
The online calculator performs all basic operations (addition, subtraction, multiplication, division) and scientific functions (square root, powers, logarithms, trigonometry).
How does the Online Calculator work?
Enter your calculation directly or use the buttons. The calculator supports parentheses, decimals, negative numbers and all standard operations. Results are displayed instantly.
Key Data and Facts
Basic operations: + − × ÷. Power: xⁿ. Root: √. Logarithms: log (base 10), ln (natural). Trigonometry: sin, cos, tan. Memory: M+, M−, MR. Order of operations applied automatically.
Step-by-Step Guide
Step-by-step: 1. Basic arithmetic: enter numbers and operators, press =. 2. Brackets: use for correct order: (3+5)×4 = 32. 3. Percentages: 200 × 15 % = 30. 4. Square root: √144 = 12. 5. Power: 2^10 = 1,024. 6. Trig: sin(30°) = 0.5; log(100) = 2.
Calculation Example
VAT: 850 × 1.19 = 1,011.50 EUR. Pythagoras: √(3²+4²) = 5. Compound interest: 1,000 × 1.03^10 ≈ 1,343.92 EUR.
Sources
Official sources
Calculations are based on applicable German laws and official data:
Full methodology at Methodology.
Reviewed by Konstantin Iakovlev · Last updated:
Mathematics
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