Free Tools for Sellers

Every calculator
you need to sell smarter.

12 free tools for Shopify sellers, Amazon merchants, and ecommerce entrepreneurs. No sign-up. No cost. Ever.

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12 free tools

0 sign-ups required

100% browser-based

Ecommerce & Marketplace

Amazon FBA Fee Calculator

Calculate referral fees, FBA fulfillment costs, storage fees and your true profit per unit.

eBay Fee Calculator

Calculate eBay final value fees, payment processing fees and your net payout per sale.

Shopify Fee Calculator

Compare Shopify plan costs and transaction fees across Basic, Shopify, Advanced, and Plus.

Calculate your Average Order Value and see how small AOV increases multiply your monthly revenue.

Barcode Generator

Generate Code 128 and EAN-13 barcodes for your products. Download as PNG. Batch mode included.

Invoice Generator

Create professional invoices with line items, tax, and discount. Print or download as PDF instantly.

Advertising & Revenue

ROAS Calculator

Calculate Return on Ad Spend and see if your Google or Meta campaigns are truly profitable.

PPC Budget Calculator

Plan your ad budget. Calculate projected clicks, conversions, revenue and cost per acquisition.

Affiliate Commission Calculator

Calculate earnings per sale, monthly affiliate income and traffic needed to hit revenue targets.

Business & Finance

Calculate Annual Recurring Revenue and project 12-month growth with churn and expansion rates.

PayPal Fee Calculator

Calculate PayPal fees for Goods & Services, invoices, and international payments. See your net amount.

Google Review Calculator

Find out how many 5-star reviews you need to reach your target Google rating. Includes bad review impact.