关于本计算器
Compare two pack sizes by price per unit with winner flag and savings percent.
按单位价格比较两种商品。
输入计算参数
计算结果摘要
Compare two pack sizes by price per unit with winner flag and savings percent.
Price divided by quantity — lower wins regardless of pack size.
Convert first (e.g. kg to g); comparison needs the same unit.
Often but not always — this check catches shrinkflation traps.