Free tools for people who sell things
Run the numbers before you run the ads.
EcommerceJolt is a set of fast, free calculators for store operators — margins, breakeven ROAS, fees, landed costs — plus AI listing tools that run on your own API key, so your data and your costs stay yours.
Calculators no signup · no spreadsheet required
Pricing
Profit Margin Calculator
Cost, price, margin, markup — see exactly what you keep on every sale.
Open calculator →AdvertisingBreakeven ROAS Calculator
The ROAS your ads must clear before a single dollar of profit exists.
Open calculator →AmazonFBA Fee Calculator
Referral and fulfillment fees by size tier, before you commit inventory.
Coming soonSourcingLanded Cost Calculator
Unit cost + freight + duties + everything else between factory and shelf.
Coming soonShopifyShopify Fee Calculator
Transaction and processing fees across every Shopify plan.
Coming soonInventoryReorder Point Calculator
When to reorder so you never stock out mid-promotion.
Coming soonAI Tools bring your own API key · your data never touches our servers