Stock Profit & Loss Calculator - an online tool to estimate A-share trading gains and fees. Free, instant, no installation required.
股票盈亏计算器是一款在线工具，按A股真实费率计算买卖成本、净收益与收益率，支持自定义费率。
手动计算股票交易盈亏和手续费繁琐易错，该工具自动按A股费率计算，帮助投资者快速评估交易结果。
输入：买入价、卖出价、持股数量、佣金费率、印花税率、过户费率、最低佣金、货币符号。输出：净收益、收益率、买入总金额、买入费用、卖出总金额、卖出费用等。
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.
适用于A股投资者，尤其是需要快速估算交易成本和盈亏的散户及短线交易者。
Trigonometry Calculator - Online sin/cos/tan tool. 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.
Grid Trading Calculator - Free online tool to calculate grid levels and capital allocation. No installation required, works instantly in your browser.
Position Size Calculator - Free online tool for risk management and calculating the number of shares to buy. No installation required.