计算工具/百分比计算器
百分比计算器
百分比、增减率、折扣计算
输入
%
计算公式: A × B% = ?
结果
请输入数值
Percentage Calculator Guide
Learn how to calculate percentages effectively
What is Percentage Calculator?
The Percentage Calculator helps you perform various percentage calculations including basic percentages, ratios, percentage changes, and discounts. Essential for shopping discounts, financial calculations, grade computations, and business analytics.
How to Use
- Select a calculation mode (Basic, Ratio, Change, or Discount)
- Enter the required values in the input fields
- View the result instantly calculated
- Switch between modes for different percentage calculations
Practical Tips
- Basic mode: Calculate "X% of Y" - great for discounts and tips
- Change mode: Find percentage increase/decrease between two values
- Discount mode: Quickly calculate sale prices with markup or discount
Accuracy & Limitations
Results are calculated with high precision and displayed with up to 2 decimal places. All calculations happen instantly in your browser - no data is sent to any server.
常见问题
百分比和百分位有什么区别?
百分比(%)是整体中特定部分的比例(如:100分中80分 = 80%)。百分位(percentile)是数据分布中的相对位置(如:第90百分位 = 高于90%的数据)。成绩、健康数据等使用百分位。
折扣率和加价率如何计算?
折扣价 = 原价 × (1 - 折扣率/100)。例如:10,000元打8折 = 10,000 × 0.8 = 8,000元。加价 = 原价 × (1 + 加价率/100)。例如:10,000元加价15% = 10,000 × 1.15 = 11,500元。
增长率和下降率如何计算?
变化率 = ((新值 - 原值) / 原值) × 100。例如:100变成150 = ((150-100)/100) × 100 = 50%增长。结果为负数则表示下降。例如:100变成80 = -20%(下降20%)。
什么是百分点(%p)?
百分点是两个百分比之间的绝对差异。例如:利率从5%上升到7%,上升了'2个百分点'。而相对来说是 (7-5)/5 × 100 = 40%上升。这在金融、统计领域是重要的区分。
复利百分比如何计算?
复利:终值 = 本金 × (1 + 利率/100)^期数。例如:100万元按年利率5%复利10年 = 100 × 1.05^10 ≈ 162.9万元。单利计算为本金 × (1 + 利率 × 期数/100)。长期来看复利收益更高。