Free · No signup · Runs in your browser
Free tools for online sellers
and small business owners
Fee calculators, profit tools, and pricing calculators for Amazon, eBay, and Etsy sellers. Built by a seller, for sellers. Embed any tool on your site in one line of code.
🆓
100% Free
No hidden fees, no freemium
🔒
Private
Calculated in your browser only
📎
Embeddable
Add any tool to your site
Selling Tools — 10 free calculators
📦
Amazon FBA Calculator
Calculate Amazon FBA profit, profit margin, ROI, and total Amazon fees with this free Amazon FBA Calculator.
FREE →💰
FBA Fee Calculator
Enter your product dimensions and weight — estimate your FBA fulfillment fee and size tier
FREE →📊
Profit Margin Calculator
Calculate gross profit margin, net margin, and markup — and understand the difference between them
FREE →⚖️
Break-Even Calculator
Estimate the units and revenue needed to break even — before you source or launch
FREE →🏷️
Product Pricing Calculator
Enter your costs and target profit margin — estimate the price you should charge
FREE →✖️
Markup Calculator
Calculate markup percentage, convert markup to margin, and find the right selling price from cost
FREE →🚢
Landed Cost Calculator
Add every cost from factory to your warehouse door — know your true cost per unit before you place the order
FREE →📬
Shipping Calculator
Estimate domestic shipping costs by weight, dimensions, and zone — so you never undercharge on shipping again
FREE →🛒
eBay Fee Calculator
Enter your eBay sale price and costs — estimate fees and real take-home profit
FREE →🎨
Etsy Fee Calculator
Enter your Etsy sale price and costs — see every Etsy fee and your real take-home profit
FREE →Built by an Amazon seller, not a content farm
I've been selling on Amazon North America since 2019. Every calculator on this site reflects real fees I deal with daily — FBA size tiers, referral percentages, inbound shipping estimates. I built these tools because I couldn't find a free one that got the math right.
Learn more about this site →