Date Difference Calculator - free online tool to calculate the number of days and working days between two dates. No installation required, works instantly in your browser.
在线计算两个日期/时间之间相差的天数、小时、分钟及年月，并可选仅统计工作日（排除周末）。
手动计算两个日期之间的差值容易出错，尤其是需要排除周末统计工作日时，该工具提供快速准确的解决方案。
输入：开始日期和结束日期（日期时间格式），可选勾选仅统计工作日。输出：相差的天数（大数字显示）、总天数（含小时和分钟）、约等于的年月日，以及勾选工作日时的工作日天数。
Rule of 72 Calculator - a free online tool to estimate the time required to double your investment and project wealth growth. No installation needed, works instantly in your browser.
Hash Calculator - free online tool to compute MD5, SHA1, and SHA256 hashes instantly. No installation required.
适合需要快速计算日期差值的个人或专业人士，如HR、项目经理、学生等。
Trigonometry Calculator - Online sin/cos/tan tool. Free, instant, no installation required.
Stock Profit & Loss Calculator - an online tool to estimate A-share trading gains and fees. Free, instant, no installation required.
Free online tool to calculate take profit and stop loss target prices, along with potential profit and loss. No installation required.
Free online tool to calculate your IPO subscription quota for Shanghai and Shenzhen stock markets. No installation required.