Seller Tools That Show Your Real Profit

Free fee, profit and shipping calculators for US online sellers. Enter your price, see what the platform takes, and keep what is left — before you list, not after you sell.

Scientific Calculator
0

Calculator categories

Etsy

Listing, transaction and payment fees for Etsy sellers.

Open calculator →

eBay

Final value fees by category, plus profit and store tools.

Open calculator →

Amazon

FBA profit, referral fees and storage estimates.

Open calculator →

Poshmark & Mercari

Simple flat-rate fee calculators for resale sellers.

Open calculator →

Whatnot

Live-shopping fees and profit estimates.

Open calculator →

Walmart & Shopify

Marketplace and store fee estimates.

Open calculator →

Shipping

Dimensional weight and shipping cost comparisons.

Open calculator →

Profit & Pricing

Margins, break-even, discounts and bundle profit.

Open calculator →

TikTok Shop

Referral fees, affiliate commissions and live-shopping profit.

Open calculator →

Print on Demand

Base costs, pricing, shipping and returns for POD sellers.

Open calculator →

Dropshipping

Margins, ad spend, refunds and supplier comparisons.

Open calculator →

Handmade

Material, labor and platform-fee pricing for craft sellers.

Open calculator →

Wholesale

Faire commissions, bulk discounts and retail markups.

Open calculator →

All calculators

Etsy

eBay

Amazon

Poshmark & Mercari

Whatnot

Walmart & Shopify

Shipping

Profit & Pricing

TikTok Shop

Print on Demand

Dropshipping

Handmade

Wholesale

Popular searches

Etsy fees calculator · eBay final value fee · Poshmark fee calculator · Amazon FBA profit calculator · Dimensional weight calculator · Mercari fee calculator · Profit margin calculator · Shipping cost comparison

Guides

Etsy Fees Explained

Every Etsy fee on a US sale, with a worked example. Read the guide →

eBay Fees by Category

Final value fees by category, with the total-sale trap explained. Read the guide →

Poshmark Fees Explained

The $2.95 and 20% rules, with low-price examples. Read the guide →

Mercari Fees Explained

The flat 10% selling fee and what it is charged on. Read the guide →

Whatnot Seller Fees

Whatnot fees for live sellers, explained simply. Read the guide →

How to Price for Profit After Fees

A step-by-step pricing method that leaves room for fees. Read the guide →

USPS vs UPS Shipping for Small Sellers

How to compare carriers without guessing. Read the guide →

Break-Even Pricing Guide

Find the price where a sale stops losing money. Read the guide →

Amazon FBA Fees Explained

Referral, fulfillment and storage fees in plain language. Read the guide →

Walmart Marketplace Fees Explained

Referral fees and selling costs on Walmart Marketplace. Read the guide →

Poshmark vs Mercari Fees: Which Keeps You More?

Same item, both platforms, at $12, $30 and $100 — plus the $15 crossover. Read the guide →

Fast results

Enter numbers and get an instant result, no sign-up.

Free to use

All tools are free.

Formula shown on the page

Each calculator page shows the formula it uses, so you can check the result yourself.

Works on mobile

Built for phone browsers.

Frequently asked questions

What is SellerCalc?

SellerCalc is a free website with fee, profit and shipping calculators and guides for US online sellers on Amazon, Etsy, eBay, Walmart, Shopify, Whatnot, Poshmark and Mercari.

Are SellerCalc calculators free?

Yes, all SellerCalc calculators are free to use, with no sign-up and no download.

Do I need to sign up to use a calculator?

No, you do not need to sign up. Open a calculator, enter your numbers, and get an instant result.

Are the results exact?

No. Results are estimates and general information only, based on the numbers you enter and the fee rates shown on the page. Always check the platform's current fee page before you price or buy.

Results are estimates and general information only. Platform fees change, so check the platform's current fee page before making a pricing decision.

Start with a free calculator

Pick a calculator, enter your own numbers, and see an estimate. No sign-up, no download.

Browse calculators