Question 1

计算器准确吗？

Accepted Answer

All calculations use standard mathematical formulas. Time tools use your device clock.

Question 2

免费使用吗？

Accepted Answer

Completely free, no limits, no ads that block tools.

Question 3

手机能用吗？

Accepted Answer

Yes, fully responsive — works on phones, tablets, and desktops.

Question 4

会存储我的数据吗？

Accepted Answer

Nothing. Everything runs in your browser. No data is ever uploaded.

基础计算器