gross margin, markup, fee, break-even and contribution calculators for online selling
Understand the unit economics behind a sale
Model selling price, product cost, platform fees, payment fees and contribution per order from your own numbers.
Tools
Gross Margin
Calculate gross margin percentage from selling price and product cost.
Open →ToolsMarkup
Calculate markup percentage relative to product cost.
Open →ToolsPercentage Fee Cost
Estimate a percentage-based platform or payment fee.
Open →ToolsContribution per Order
Subtract product, shipping and variable fees from selling price.
Open →ToolsBreak-even Orders
Estimate orders required to cover fixed monthly costs from contribution per order.
Open →Guides
Margin and markup use different bases
Both describe spread between selling price and cost, but their denominators differ.
GuidesMap variable fees per order
Unit economics improve when every sale-linked fee is visible.
GuidesUse contribution before fixed costs
Contribution per order shows what remains to cover fixed expenses and profit.
GuidesEstimate break-even order volume
Break-even volume links unit contribution to monthly fixed costs.
GuidesCompare pricing scenarios
A higher price and a higher order volume are not interchangeable.