Free tools for online sellers
4 free tools for people who sell on eBay, Etsy, Amazon and their own stores: fee calculators, a margin calculator and a barcode maker. They run in your browser, need no account, and use rates we check against each platform’s own pages.
Seller tools
Pick a tool, get the number
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eBay
eBay fee calculator
Fees, payout and profit for a sale on eBay US, UK, Germany, Australia, Canada and other eBay sites, with every rate linked to eBay.
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Payments
PayPal fee calculator
What PayPal takes from a payment and how much to ask for to receive an exact amount, with every current US rate.
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Pricing
Profit margin & markup calculator
Margin, markup and the price you need for a target margin, after eBay, Etsy, Amazon or Shopify fees, shipping and ads.
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Barcodes
UPC & barcode generator
UPC-A, EAN-13, EAN-8, ITF-14 and Code 128 barcodes with the check digit worked out, as PNG or SVG, plus a bulk check-digit checker.
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How we build these tools
- Checked against the source. Every rate links to the platform’s own help page, with the date we last checked it.
- Private by design. The numbers you type stay in your browser. Nothing is sent to us or stored.
- Free, with no sign-up. Use them as often as you like and share a link to your result.
We are an e-commerce design studio in New Jersey, and these tools grew out of the questions our clients ask before they list and price. If you want a hand with the store itself, see our eBay store design work.
Start a project
Selling online? Let’s make your store sell more.
- Fixed quote before any work starts
- In-house team in New Jersey, no outsourcing
- Support long after launch
Prefer to talk? (609) 675-0912 · frannie@ocdesignsonline.com