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Calculate percentages easily. Find "What is 20% of 100?", "What percent is 50 of 200?", or "If 30 is 25%, what is the total?"
Choose from 'Find B% of A', 'What percent is A of B?', or 'If A is B%, what is the total?'
Enter the required numbers based on your selected mode.
The calculation result is displayed in real-time.
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Percentage Calculator is an online tool that makes various percentage calculations easy. From basic calculations like "What is 20% of 100?" to ratio calculations like "What percent is 50 of 200?" and reverse calculations like "If 30 is 25%, what is the total?" - it supports three calculation modes. Instantly perform percentage calculations frequently used in daily life and business.
"Find B% of A" calculates the value (20% of 100 = 20), "What percent is A of B?" calculates the ratio (50 is 25% of 200), and "If A is B%, what is the total?" reverse calculates the total (if 30 is 25%, total is 120).
"B% of A" = A × B ÷ 100, "A is what % of B" = A ÷ B × 100, "If A is B%, total" = A ÷ B × 100.
Calculations are performed within JavaScript's floating-point precision range. Practically, this provides about 15-16 digits of precision. Display is rounded as needed.
For "What percent is A of B?" when B is 0, or "If A is B%, what is the total?" when B is 0, an error message is displayed as division by zero is not possible.
No, input data is processed only in your browser and is never sent to or saved on any server. Data is cleared when you close the page.