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Math Tools

19 free math tools. Browser-based. No signup. Privacy-first.

Free No signup Client-side Privacy friendly

什么是 Math Tools?

Math tools are free, browser-based calculators and solvers for everyday and academic mathematics — percentages, fractions, statistics, algebra, matrices, equations and probability. Each runs entirely client-side with instant results, no signup and no data leaving your device.

What are math tools?

From a quick percentage to solving a system of equations or computing a standard deviation, these calculators cover the arithmetic, algebra, statistics and probability that come up in study, work and research. Enter your numbers and get a worked result instantly.

Everything runs in your browser, so there is nothing to install and your inputs stay private.

Why client-side?

  • Privacy: sensitive data (API keys, payloads, passwords) never leaves your device.
  • Speed: no network round-trip — results appear as you type.
  • Reliability: works offline once loaded.
  • Cost: always free, no signup or rate limits.

Browse Math Tools

Learn the concepts

Go deeper into the theory behind these tools, with step-by-step explanations and Big-O analysis:

Prefer a focused tool?

  • Math → Free calculators for everyday and academic math

常见问题

什么是最大公约数(GCD)?

最大公约数是能够整除所有给定数字且没有余数的最大整数。

什么是最小公倍数(LCM)?

最小公倍数是所有给定数字的公倍数中最小的正整数。

这两个量之间有什么关系?

对于两个数,gcd(a, b) × lcm(a, b) = |a × b|。最大公约数通过欧几里得算法求得,再由此推导出最小公倍数。

我可以输入两个以上的数字吗?

可以——最大公约数和最小公倍数会针对整个列表逐对计算得出。

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