Free Amazon Seller Tools
27 free calculators and tools — no signup required. Understand your margins, optimize your PPC, plan inventory, and create better listings.
Profit & Fees
Understand your real margins and every Amazon fee.
FBA Profit Calculator
Calculate real profit per unit after all Amazon fees, shipping, and cost of goods.
Amazon Fee Calculator
See every Amazon seller fee broken down — referral, FBA, storage, placement, and more.
Profit Margin Calculator
Calculate gross and net profit margins with price sensitivity analysis.
ROI Calculator
Calculate return on investment, break-even month, and cumulative profit over time.
Sales Revenue Calculator
Project daily, monthly, and annual Amazon revenue with growth rate modeling.
FBA vs FBM Calculator
Compare FBA and FBM fulfillment costs side by side to find the most profitable method.
Referral Fee Lookup
Look up Amazon referral fee percentages by product category with 2026 rates.
PPC & Advertising
Optimize your ad spend and maximize campaign ROI.
Coupon ROI Calculator
Calculate whether your Amazon coupon promotion is actually profitable after discounts and clip fees.
Break-even ACOS Calculator
Find the exact ACOS threshold where your PPC campaigns stop being profitable.
PPC Budget Calculator
Estimate your daily and monthly ad budget based on target sales and margins.
TACoS Calculator
Calculate Total Advertising Cost of Sales and benchmark your ad dependency.
A/B Test Significance Calculator
Determine if your Amazon listing A/B test results are statistically significant.
Product Research
Evaluate products and estimate sales before committing.
Product Research Profit Analyzer
Score product opportunities 0-100 with PPC sensitivity modeling. Buy / Test / Skip.
BSR Sales Estimator
Estimate monthly sales volume from Best Seller Rank across all major categories.
Amazon Size Tier Calculator
Determine your product's FBA size tier and estimated fulfillment fee.
Storage Fee Calculator
Calculate monthly and annual FBA storage costs including Q4 surcharges.
Amazon Sales Estimator
Estimate monthly revenue, units sold, and profit for any product based on BSR and price.
Product Launch Cost Calculator
Estimate the total budget to launch a new product on Amazon — inventory, samples, photography, PPC, and more.
Inventory & Shipping
Stay in stock and avoid costly stockouts.
Inventory Reorder Calculator
Know exactly when to reorder so you never run out of stock on Amazon.
Inventory Restock Planner
Multi-SKU restock planner with stockout risk scoring and order quantity optimization.
Reimbursement Tracker
Track FBA reimbursement cases and calculate your recovery rate.
Shipping Cost Calculator
Estimate inbound shipping costs to Amazon FBA — sea freight, air freight, express, and domestic.
Listing Optimization
Create better listings that rank higher and convert more.
Listing Quality Checker
Score your Amazon listing title, bullets, description, and images for optimization.
Keyword Density Checker
Analyze keyword frequency and density in your Amazon listing text.
Duplicate Keyword Remover
Remove duplicate keywords and format for Amazon backend search terms.
Product Description HTML Editor
Create formatted Amazon product descriptions with live preview.
Listing Character Counter
Check character counts for Amazon listing fields — title, bullets, description, and backend keywords.