Ecommerce Calculators

Selling online adds a layer that a shop floor never had: a stack of percentage and per-order fees that sit between the price a customer pays and the money that reaches you. These ten calculators exist to make that stack visible.

Start with ecommerce profit for the general case — price, cost of goods, shipping, platform fees, advertising and a returns rate, producing net profit per order and per month. Then narrow: the Shopify profit calculator models the plan fee and the 2.9% + 30¢ payment processing that most sellers forget until reconciliation, and the Amazon FBA profit calculator stacks referral commission, fulfilment, storage, returns and PPC, then reports the break-even ACoS that decides whether an advertising campaign is worth running.

Pricing runs the same relationship backwards. The product pricing calculator takes a cost and a target margin and solves for the selling price that survives the fees — which is a genuinely different sum from adding a markup, because percentage fees scale with the price you are trying to find. The wholesale pricing calculator does the same for two tiers at once, protecting your margin while leaving a retailer room to work.

The remaining four are the everyday ones. Shipping cost compares actual against dimensional weight, which is how a light, bulky parcel quietly costs three times what the scale suggested. Discount handles stacked promotions and the effective rate they add up to. Sales tax works in both directions, including stripping tax back out of a gross price. And conversion rate and store ROI connect traffic to money.