💸 CPA（单次获客成本）计算器CPA Calculator
计算每次获客（转化）成本 CPA = 广告花费 ÷ 转化数，或由单次点击成本和转化率推算；填写客户价值后可看每次获客的利润和价值/成本比。Find cost per acquisition, CPA = ad spend ÷ conversions, or derive it from cost per click and conversion rate; add a customer value to see profit per acquisition and the value-to-cost ratio.
使用说明与常见问题How-to & FAQ
「CPA（单次获客成本）计算器」是什么？What is the CPA Calculator tool?
计算每次获客（转化）成本 CPA = 广告花费 ÷ 转化数，或由单次点击成本和转化率推算；填写客户价值后可看每次获客的利润和价值/成本比。Find cost per acquisition, CPA = ad spend ÷ conversions, or derive it from cost per click and conversion rate; add a customer value to see profit per acquisition and the value-to-cost ratio.
如何使用「CPA（单次获客成本）计算器」？How do I use the CPA Calculator tool?
在「CPA（单次获客成本）计算器」中，填写「已知」、「广告花费 $」、「转化数」、「单次点击成本 $」、「点击转化率 %」等参数，结果会随输入实时计算并显示在下方。In the CPA Calculator: Fill in "Given", "Ad spend $", "Conversions", "Cost per click $", "Click conversion rate %"; results are recalculated instantly as you type.
CPA 怎么算？How is CPA calculated?
CPA = 广告总花费 ÷ 获得的转化（客户、订单或注册）数。也可写成 CPA = 单次点击成本 ÷ 点击转化率。CPA = total ad spend ÷ conversions (customers, orders or sign-ups). Equivalently, CPA = cost per click ÷ click conversion rate.
CPA 多少才算合理？What is a good CPA?
关键看它与客户价值的关系：CPA 低于每个客户带来的利润才有赚。很多团队把客户价值 ÷ CPA 保持在 3 : 1 左右作为参考，但这只是经验做法。What matters is how it compares with customer value: CPA must be below the profit a customer brings. Many teams aim for value ÷ CPA of about 3 : 1, but that is a rule of thumb.
计算结果可以作为最终依据吗？Can I rely on the result?
「CPA（单次获客成本）计算器」按标准公式计算，结果仅供参考；实际金额以银行、券商或税务机关的规则和四舍五入方式为准。The CPA Calculator uses standard formulas and is for estimation only; actual figures depend on your bank, broker or tax authority's rules and rounding.
「CPA（单次获客成本）计算器」免费吗？需要注册吗？Is the CPA Calculator free? Do I need an account?
「CPA（单次获客成本）计算器」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The CPA Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.