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Free Online FBA Fee Calculator

Free Online FBA Fee Calculator

Estimate Amazon FBA costs by entering price, cost, size, weight, and category. Get referral, fulfillment, and storage fees plus profit and margin to price products with confidence.

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$0.00
Selling Price
Product Cost
$0.00
Referral Fee (15%)
$0.00
FBA Fulfillment
$0.00
Net Profit
$0.00
$0.00
Net Profit
Margin: 0.0% · ROI: 0.0%
Referral Fee = Price × Category Rate% FBA Fee = Size-tier based (2025 rates) Net Profit = Price − Cost − All Fees ROI = Net Profit ÷ (Cost + Shipping) × 100%

Want to scrape data in bulk? Try Thunderbit for free.

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Scrape Amazon With AI in 2 ClicksUse Thunderbit to scrape listings, subpages, and documents, then extract structured fields in a couple of clicks. Export to Sheets, Airtable, or Notion for quick analysis.
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Scrape Amazon With AI in 2 Clicks

Collect product and competitor data from any website using Thunderbit’s AI Web Scraper Chrome extension. Scrape listings with pagination, follow subpages to enrich rows, and extract structured fields from PDFs, docs, and images, then summarize, categorize, or format the results. Export your tables to Google Sheets, Airtable, or Notion with free data export. Choose cloud scraping for speed or browser scraping for logged-in pages, and schedule recurring runs to monitor prices, inventory, and catalog changes.

Use Thunderbit to Scrape Amazon in 2 Clicks

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STEP 1Download and InstallDownload and install the Thunderbit Chrome Extension from the Thunderbit Chrome Extension Download Page.
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STEP 2Open ExtensionOnce installed, log in or create a free account to get started.
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STEP 3Scrape Amazon PagesWith the help of AI, scrape information of products, reviews, and prices in 2 clicks.

Learn how to calculate Amazon FBA fees and profit margin online

Estimate Amazon referral, fulfillment, and storage fees

Use this AI-powered FBA fee calculator to estimate the main Amazon cost components before you launch or reorder inventory. Enter your marketplace, category, selling price, and product specs, and the tool returns an itemized breakdown of referral fees, FBA fulfillment fees, and monthly storage fees. It’s built for Amazon sellers and ecommerce operators who need quick, practical numbers to validate unit economics.
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Convert product size and weight into an FBA size-tier estimate

When you provide dimensions, weight, and units, the calculator can estimate the most likely FBA size tier, or use a tier you select. This helps you model fulfillment fees more accurately, especially when you are comparing packaging options or deciding whether to bundle products. It’s useful for private label teams, resellers, and sourcing managers who want to reduce surprises in landed cost.
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Validate profitability before listing, sourcing, or running ads

Model profit and profit margin by combining selling price, COGS, inbound shipping per unit, and estimated Amazon fees into a single view. This supports common decisions like setting a minimum viable price, choosing between suppliers, and deciding whether a product can support PPC spend. It’s a strong fit for ecommerce teams that review many SKUs and need a consistent way to compare margins.
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Plan inventory and storage strategy by month and marketplace

Select a marketplace and storage month to estimate how seasonality can affect monthly storage fees, then use the results to plan reorder timing and inventory levels. This is helpful for operators managing Q4 storage risk, evaluating oversized products, or comparing expansion into new marketplaces. The output is designed to be easy to copy into spreadsheets or internal SKU profitability trackers.
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What users say about Thunderbit

Taryn W.Growth Strategist@Thunderbit changed how I run competitor research. I click 'AI Suggest Fields,' and it builds a clean table across paginated results—no coding, no CSS. Huge time-saver when analyzing product data from long-tail marketplaces.
Miles T.Sales Development ConsultantI use Thunderbit to grab emails and phone numbers from directories. It extracts clean contact info in one click, and exporting to Sheets or Notion takes seconds. No extra setup, no coding—just usable data ready to work with.
Rhea C.E-commerce AnalystThunderbit helps me monitor SKU data across multiple pages. I scrape the listings, then use Subpage Scraping to pull full product specs, pricing, reviews, and stock. The AI organizes everything into columns I define.
Cassian B.Real Estate AdvisorThunderbit's Scheduled Scraper makes real estate tracking easier. I describe the interval in plain English, and it automatically pulls updated listings, prices, and links without touching the setup again. Simple and very practical.
Dorian B.Content & SEO SpecialistI use Thunderbit's Field AI Prompts to clean and tag scraped blog content. It extracts titles, authors, and even suggests categories. Works great across dynamic sites and subpages—perfect for building structured SEO datasets.
Lina K.Marketplace Operations LeadWe track SKUs from niche stores using Thunderbit. Cloud Scraping handles 50 pages at a time, and for login-required sites, we switch to browser mode. It’s fast, flexible, and doesn’t need ongoing maintenance or manual edits.
Jorge F.Inbound Sales ManagerThunderbit’s AI Autofill is a lifesaver. After scraping contact info, I use it to fill lead forms directly in my browser. I just select the tab, and it fills everything using the scraped row. No manual input needed.
Alina D.Freelance ResearcherI rely on Thunderbit for extracting data from PDFs, image-based sites, and infinite scroll pages. It handles messy formats with AI and delivers ready-to-export tables I can send to Google Sheets or Airtable in seconds.
Taryn W.Growth Strategist@Thunderbit changed how I run competitor research. I click 'AI Suggest Fields,' and it builds a clean table across paginated results—no coding, no CSS. Huge time-saver when analyzing product data from long-tail marketplaces.
Miles T.Sales Development ConsultantI use Thunderbit to grab emails and phone numbers from directories. It extracts clean contact info in one click, and exporting to Sheets or Notion takes seconds. No extra setup, no coding—just usable data ready to work with.
Rhea C.E-commerce AnalystThunderbit helps me monitor SKU data across multiple pages. I scrape the listings, then use Subpage Scraping to pull full product specs, pricing, reviews, and stock. The AI organizes everything into columns I define.
Cassian B.Real Estate AdvisorThunderbit's Scheduled Scraper makes real estate tracking easier. I describe the interval in plain English, and it automatically pulls updated listings, prices, and links without touching the setup again. Simple and very practical.
Dorian B.Content & SEO SpecialistI use Thunderbit's Field AI Prompts to clean and tag scraped blog content. It extracts titles, authors, and even suggests categories. Works great across dynamic sites and subpages—perfect for building structured SEO datasets.
Lina K.Marketplace Operations LeadWe track SKUs from niche stores using Thunderbit. Cloud Scraping handles 50 pages at a time, and for login-required sites, we switch to browser mode. It’s fast, flexible, and doesn’t need ongoing maintenance or manual edits.
Jorge F.Inbound Sales ManagerThunderbit’s AI Autofill is a lifesaver. After scraping contact info, I use it to fill lead forms directly in my browser. I just select the tab, and it fills everything using the scraped row. No manual input needed.
Alina D.Freelance ResearcherI rely on Thunderbit for extracting data from PDFs, image-based sites, and infinite scroll pages. It handles messy formats with AI and delivers ready-to-export tables I can send to Google Sheets or Airtable in seconds.

Frequently Asked Questions

Extract Data using AI
Easily transfer data to Google Sheets, Airtable, or Notion
Chrome Store Rating
PRODUCT HUNT#1 Product of the Week
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