Бесплатный онлайн percentage калькулятор. Рассчитайте percentages, percentage increase, decrease, difference, and reverse percentages мгновенно. Только на стороне клиента, no ads.
This percentage calculator handles all common percentage calculations in one place. Whether you need to calculate a tip, figure out a discount, compute a percentage change, or find what percentage one number is of another — everything is instant and private. All calculations happen in your browser with no data sent to any server.
To calculate what X% of Y is, multiply Y by X and divide by 100. For example, 20% of 150 = 150 × 20 ÷ 100 = 30. Our calculator does this instantly — just enter the percentage and the value.
Percentage increase = ((New Value - Original Value) ÷ Original Value) × 100. For example, if a price goes from $100 to $130, the increase is ((130 - 100) ÷ 100) × 100 = 30%.
Percentage decrease = ((Original Value - New Value) ÷ Original Value) × 100. For example, if a price drops from $200 to $160, the decrease is ((200 - 160) ÷ 200) × 100 = 20%.
Percentage change (increase/decrease) assumes one value came before the other and shows direction. Percentage difference treats both values equally and shows how far apart they are relative to their average, regardless of which came first.
Yes, completely free. No ads, no registration, no limits. All calculations happen in your browser.
Reverse percentage helps you find the original value before a percentage was applied. For example, if $120 includes 20% tax, the original price was $100. Formula: Original = Final ÷ (1 + Percentage/100).
Yes, our calculator handles negative numbers. Percentage difference uses the absolute difference relative to the average of both values, so it works for any real numbers including negatives and zero (with appropriate safeguards).
Percentage points are simple arithmetic differences (e.g., 15% to 20% = 5 percentage points). Percent change is relative: (20% - 15%) ÷ 15% × 100 = 33.3% increase. Percentage points describe absolute change, while percent change describes relative change.