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🇺🇸Free tools for United States sellers

Free tools for US Amazon, eBay, Etsy & Shopify sellers

Calculate FBA fees in USD, check sales tax nexus across 50 states, and price listings that actually make profit.

USD by default
Amazon US 2026 fees
50-state sales tax
No signup

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Best tools for United States sellers

Handpicked, mobile-friendly and completely free.

US Sales Tax Nexus Checker (50 States, 2026)

Check economic sales tax nexus across all 50 US states from your annual sales and transactions.

Amazon FBA Fee & Profit Calculator

Calculate FBA fees, referral fees and net profit for Amazon US, UK and India sellers.

Amazon ACOS & TACOS Calculator

Break-even ACOS, target ACOS, ROAS and TACOS for Amazon Sponsored Products — free.

Amazon Listing Title Builder

Assemble compliant 200-char Amazon product titles in seconds. Upgrade with ListIQ AI.

eBay Final Value Fee Calculator

Category-wise eBay final value fees, insertion fees and PayPal — accurate net payout.

Etsy Fee & Profit Calculator

Estimate Etsy listing, transaction, payment and offsite ad fees — see your real take-home.

Shopify Profit Margin & Breakeven ROAS Calculator

Calculate margin, breakeven ROAS and target ad spend for your Shopify store.

Profit Margin & Markup Calculator

Gross margin, markup and suggested sell price. Works in USD, INR, GBP and EUR.

Sales Tax & VAT Calculator (Global)

Add or reverse tax across US, UK, EU, Australia, Canada and India — instant net & gross.

Barcode Generator (EAN-13, UPC, Code128)

Generate and download printable EAN-13, UPC-A and Code128 barcodes — free, no signup.

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