指数与根计算器
计算数的乘方，并求平方根、立方根、n 次方根和对数。
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使用方法
- 1填写各项
输入数字或选择所需选项。
- 2查看结果
更改任何值时，答案会立即更新。
- 3使用结果
复制结果或记下来。不会向任何地方发送任何内容。
About this tool
Enter a base number and an exponent to get the power, such as 2 to the power 10 is 1,024. You also see the square, cube, square root, cube root, any root you choose, the base-10 logarithm and the natural logarithm.
When to use it
Raise a number to a power, and find square, cube and nth roots and logs.
Tips
Negative bases with fractional powers have no real result.
Privacy
Everything runs in your browser, so your data is not uploaded or stored.
Rules to remember
A number to the power 0 is 1, a negative power is the reciprocal, and a power of one half is a square root. Roots of negative numbers are not real.
计算示例
With the boxes at their starting values (Base number: 2; Exponent (power): 10; Root index n: 3), the tool shows: Square: 4; Cube: 8; Square root: 1.41421356237; Cube root: 1.25992104989; Log base 10: 0.301029995664; Natural log: 0.69314718056; n-th root: 1.25992104989; Base to the power: 1024. Change any box to see your own numbers. The result updates as you type, and nothing leaves your browser.
获得最佳结果的提示
在相信结果之前先检查每一个输入项，因为一个错误的数字就会改变整个答案。请使用工资单、账单、证书或合同上的准确数字，并记下计算日期。税率、门槛和规则会不时变化，因此对于税费和法律事务，请将结果视为估算，并与本页注明的官方来源核对。您可以尝试任意多个方案；不会保存或发送任何内容，刷新页面会清空输入。
要点
- 分类: 日常工具
- 在浏览器中运行，无需注册，无需上传。
- 您输入的信息保留在设备上。
- 提供多种语言。
- 内容最后审核日期:
常见问题
How do I find a fourth root?
Type 4 in the “root” box. The nth root is the number raised to 1 ÷ n.
Can I use negative numbers?
Powers work. Square roots and logs need positive numbers.
What is a root?
The number that, raised to a power, gives the value.
Does it do logs?
Yes, natural and base 10 logs.
What is 2 to the power 10?
1,024.