商品单价比较
UpBox优盒工具箱，免费在线单价比较工具，把不同规格商品的售价换算成每 100g、每 100ml 或每件价格，直接判断哪个更划算、贵多少。
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两件商品Two products
A
B
A 的单价-
B 的单价-
差价-
更划算-
填写两边的售价与规格后自动比较
只比较价格与规格，不含促销、满减、赠品与会员价；规格需与基准单位一致（克 / 毫升 / 件），不同品类之间不具可比性；差价按较贵一方相对便宜一方计算
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工具介绍
大包装不一定更便宜，尤其是「第二件半价」与不同规格混着摆的时候。把两边的售价和净含量填进去，换算到同一基准再比。 Bigger packs are not always cheaper, especially with multi-buy deals and mixed sizes on the shelf. Enter both prices and net weights, then compare on one basis.
结果给出每 100g / 100ml / 每件的价格，并标明哪边更划算、贵了多少百分比。 The result shows the per-100g, per-100ml or per-item price, which side wins and by what percentage.
- 同一基准换算Common basis
- 差价百分比Percentage gap
- 克与毫升Weight and volume
- 按件比较Per-item mode
使用说明
- 选换算基准。Pick the basis.
- 填两边的售价。Enter both prices.
- 填两边的规格。Enter both sizes.
- 看单价与结论。Read the per-unit price and verdict.
常见问题
为什么大包装反而更贵？Why can a bigger pack cost more?
单价由售价除以净含量决定，规格翻倍但价格涨得更多时就会更贵。Unit price is price divided by size, so a doubled pack that costs more than double loses.
可以比较不同品类吗？Can I compare different product types?
不建议，单价只对同类商品有比较意义。No — unit price only means something within the same kind of product.
含促销价吗？Does it include promotions?
可以填促销后的实付价，但工具不计算满减与赠品。Enter the post-discount price if you like, but the tool does not model coupons or gifts.
差价怎么算的？How is the gap calculated?
用较贵一方的单价相对便宜一方求百分比。The dearer side is measured as a percentage above the cheaper one.