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Amazon FBA Calculator Skill

bynexscope-ai339GitHub starsGitHub

Calculate precise Amazon FBA fees, including fulfillment, storage, and referral costs, and get a full profit breakdown with margin and ROI. Start free in seconds.

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Result preview

Full Demo

Explore a real Amazon FBA profitability report powered by this Skill.

Get started

Run Your First Task

  1. The screenshot shows an AI assistant successfully installing the amazon-fba-calculator skill from a GitHub repository.
    01

    Install

    Add the Amazon FBA Calculator Skill to your AI agent.

  2. AI assistant loads FBA calculator to generate a 6-page Amazon profitability report, starting with baseline calculations using a representative product.
    02

    Calculate Profitability

    Enter your product dimensions, selling price, shipping cost, marketplace, and storage period to generate a complete FBA fee analysis.

  3. This is a showcase report generated using the amazon-fba-calculator skill.
    03

    Optimize Margins

    Get actionable recommendations on pricing, packaging, fulfillment costs, break-even price, profit margin, inventory efficiency, and ROI.

Install command

$ npx skills add https://github.com/nexscope-ai/Amazon-Skills/blob/main/amazon-fba-calculator

Installation signals

Installation activity

About

Amazon FBA calculator tools help e-commerce sellers estimate the true costs of selling on Amazon. This skill accurately calculates all relevant FBA fees—from fulfillment to storage—so you can analyze profit margins before listing a product or optimize your existing catalog. Whether you're a new seller scouting products or a veteran expanding your inventory, you'll get a detailed fee breakdown and actionable insights in seconds.

Beyond standard fee calculation, this skill automatically detects your product's size tier, applies the latest 2024 rate cards, and breaks down fees line by line. It also computes gross and net margins, ROI, and even suggests optimization tips like reducing package dimensions or adjusting inventory months to cut long-term storage costs.

Use it to compare FBA versus FBM economics, forecast seasonal storage spikes, or bulk-analyze your entire product line. With a simple JSON input, you can integrate it into your sourcing workflow or run ad-hoc analyses with plain Python scripts.

Key features

What makes it powerful

  • Automatic Size Tier Classification

    Instantly classify your product into the correct Amazon size tier based on dimensions and weight, ensuring accurate fee calculations.

  • Complete FBA Fee Breakdown

    Get a detailed breakdown of fulfillment fees, monthly storage, long-term storage, and referral fees using the latest 2024 rates.

  • Profit & ROI Analysis

    Calculate gross margin, net margin, and ROI after all FBA costs, including inbound shipping, to see your true bottom line.

  • Actionable Optimization Tips

    Receive smart suggestions to reduce fees by adjusting product size, weight, or inventory management strategies.

Use cases

When to reach for it

  • Estimate profitability for new products

    Before sourcing, quickly calculate all Amazon FBA fees and project your net profit to decide if a product is worth selling.

  • Optimize existing inventory costs

    Analyze your current catalog to identify products with high storage or oversized fees and take action to reduce costs.

  • Compare FBA vs FBM scenarios

    Understand the fee differences between Fulfilled by Amazon and Fulfilled by Merchant to choose the best fulfillment strategy.

  • Forecast seasonal storage expenses

    Plan inventory for Q4 and other peak seasons by estimating increased storage fees ahead of time.

SKILL.md

name: amazon-fba-calculator version: 1.0.0 description: Amazon FBA Calculator - Complete fee breakdown and profit analysis platform: amazon lang: en

Amazon FBA Calculator (Lite)

Precise FBA fee calculation based on product dimensions and weight.

Features

  • Size Tier Detection - Automatic classification
  • FBA Fulfillment Fee - 2024 rates
  • Monthly Storage Fee - Standard & Peak season
  • Long-term Storage Fee - 271+ days aging
  • Referral Fee - By category
  • Profit Analysis - Gross/Net margin, ROI
  • Optimization Tips - Size, weight, inventory

Size Tiers (2024)

TierMax WeightMax Dimensions
Small Standard1 lb15"×12"×0.75"
Large Standard20 lb18"×14"×8"
Small Oversize70 lb60"×30"
Medium Oversize150 lbL+Girth ≤108"
Large Oversize150 lbL+Girth ≤165"
Special Oversize>150 lb>165"

Input

{
  "length": 10.0,
  "width": 6.0,
  "height": 3.0,
  "weight": 1.2,
  "selling_price": 29.99,
  "product_cost": 8.00,
  "inbound_shipping_cost": 1.50,
  "category": "kitchen"
}

Output

  • Size tier classification
  • Fee breakdown table
  • Profit metrics (margin, ROI)
  • Optimization suggestions

Usage

python3 scripts/calculator.py
python3 scripts/calculator.py '{"length": 10, "width": 6, ...}' --zh

Version 1.0.0 | Platform: Amazon | Variant: Lite

Part of Nexscope AI — AI tools for e-commerce sellers.

FAQ