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FBA Calcs
Free Amazon FBA Calculators & Tools
2 followers
Free Amazon FBA Calculators & Tools
2 followers
Most FBA calculators ignore prep, inbound placement and freight, so your margin looks better than it is. FBA Calcs shows your true landed cost per unit and real net profit — free, no sign-up. • Profit and fee calculator: referral tiers, FBA size tiers, inbound placement, prep, freight • Prep cost calculator: polybagging, labelling, bundling, inspection per unit • Sourcing scorecard: margin, competition, seasonality before you commit 2026 US rate card, 10 marketplaces, 4 languages.
Free
Launch tags:E-Commerce
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I built this because I got tired of FBA calculators that ask for an email before they'll show you a number.
The annoying part was the rate card. Amazon's 2026 US fees aren't one number - they're 8 small-standard tiers, 12 large-standard tiers, bulky sizes, a 30-category referral table and a 3.5% fuel surcharge that kicked in on 2026-04-17. So I typed all of it in as static data and let the browser do the math. Dimensional weight switches between US (139) and international (5000) automatically. Break-even price is solved by bisection, 60 iterations, so it converges even when the fee tier changes partway through.
No backend, no tracking, no price scraping - that last one is deliberate, since Amazon's Associates policy doesn't allow it.
What's next: built-in rate cards for UK/DE/FR/IT/ES (right now those are manual entry), and localized URLs with hreflang.
Happy to answer anything about the fee math.