Introduction
The Amazon Profit Calculator shows you how much money you really keep from each sale on Amazon. You type in your selling price and your costs. The calculator takes out Amazon's fees and shows your net profit per unit, your profit margin, your ROI, and your break-even price.
Amazon takes a cut of every order. There is a referral fee based on your product category. If you use FBA, there is also a fulfillment fee based on your item's size and weight, plus monthly storage fees. Add your product cost, shipping, ads, and returns, and a sale that looks good can turn into a loss. This tool runs the numbers so you know before you buy stock.
Pick your marketplace, your category, and FBA or FBM. Quick Mode asks for just the basics. Advanced Mode adds storage, prep, labeling, inbound shipping, PPC ad spend, returns, and overhead, plus a monthly and yearly profit forecast. You get a full cost breakdown, step-by-step math, and charts that show where every dollar of your sale goes.
Use it to price new products, check if a supplier deal is worth it, or find out why your margins are thin. It uses amazon.com's U.S. fees, and it handles both inches/pounds and centimeters/kilograms.
How to use our Amazon Profit Calculator
Enter your product price, your costs, and your item size and weight. The calculator works out your Amazon fees and shows your net profit per unit, profit margin, ROI, break-even price, and a full cost breakdown with charts.
Calculator Mode: Pick Quick Mode for a fast profit check. Pick Advanced Mode to add storage, prep, ads, returns, and overhead costs.
Fulfillment Type: Choose FBA if Amazon ships your orders, or FBM if you ship them yourself.
Seller Account Type: Choose Professional if you pay the monthly plan fee, or Individual if you pay a fee on each unit sold.
Amazon Marketplace: The calculator uses amazon.com's U.S. fee schedule, in U.S. dollars.
Product Category: Pick the category your item is listed in. This sets your Amazon referral fee rate and adds a closing fee for media items like books and DVDs.
Selling Price: Enter the price a buyer pays for your item.
Shipping Charge to Buyer: Enter any shipping money you collect from the buyer. Put 0 if shipping is free.
Product Cost / COGS: Enter what one unit costs you to buy or make. Remember to include import customs duty if you source overseas.
Your Shipping Cost (Outbound): Enter what you pay to ship one unit to the buyer. FBA sellers can leave this at 0.
Length, Width, and Height: Enter your packed box size and pick inches or centimeters. These set your FBA size tier.
Packaged Item Weight: Enter the weight of the packed unit and pick lb, oz, kg, or g. The tool uses dimensional weight instead if it is higher, except for small standard-size items and items over 150 lb, which use the unit weight.3
Dangerous goods and SIPP: Tick Dangerous goods for hazmat items, which have their own fee table. Tick SIPP-certified if Amazon has certified the product to ship in its own packaging: standard-size items then get Amazon's SIPP discount, and Small or Large Bulky items avoid the packaging fee.
Historical days of supply: Copy the last-90-day and last-30-day figures from FBA Inventory.6 When both are under 28 days, Amazon adds a low-inventory-level fee to each unit shipped.6 Leave them blank if the fee does not apply to your product.
Storage Month: Pick the month you store stock. October to December costs more because of the holiday peak rate.5
Storage Space per Unit: This fills in from your size inputs. Change it if you know the real cubic size.
FBA Prep Fee: Enter what you pay per unit for bagging, bubble wrap, or other prep.
Labeling Fee: Enter what you pay per unit for FNSKU labels or stickers.
Inbound Shipping to Amazon: Enter the cost per unit to send stock to the fulfillment center.
PPC / Ad Spend per Unit: Enter your ad cost for each unit sold.
Return / Refund Allowance: Enter money set aside for returns. Choose a percent of your price or a flat amount.
Miscellaneous / Overhead: Enter any other cost per unit, like software or packaging inserts.
Estimated Monthly Unit Sales: Enter how many units you expect to sell each month. This gives you monthly and yearly profit numbers.
Press Calculate to see your results, or Reset to start over.
Amazon Seller Profit: What You Actually Keep
When you sell on Amazon, the price a buyer pays is not the money you keep. Amazon takes fees out of every sale. You also pay for the product itself, shipping, ads, and returns. Your real profit is what is left after all of that. Many sellers pick a price that looks good but ends up losing money once the fees are counted.
The Main Amazon Fees
Every sale has a few common costs:
- Referral fee: Amazon's cut of the sale. It is usually 15% of the total price, but some groups are different.1 Consumer electronics and computers are 8%.1 Clothing is 17% above $20, with lower rates on cheaper items.1 Jewelry starts at 20%.1 The fee is charged on the item's total price, which includes shipping and any gift wrap.1
- FBA fulfillment fee: If Amazon picks, packs, and ships for you, they charge a flat fee per unit. The fee depends on the size tier and shipping weight of your package, and on whether your price is under $10, $10 to $50, or over $50.2 Apparel and dangerous goods (hazmat) have their own fulfillment fee tables.2 A 3.5% fuel and logistics surcharge is added to fulfillment fees from April 17, 2026.2 Higher holiday peak fulfillment fees apply from October 15, 2026, to January 14, 2027.2
- Storage fee: A monthly charge based on how much space your stock takes up in the warehouse. It goes up a lot from October to December.5 Dangerous goods have their own, higher storage rates.5
- Closing fee: A flat $1.80 extra fee on media items: books, DVDs, music, software and video.1
- Per-item fee: Individual plan sellers pay $0.99 on each unit sold.1 Professional plan sellers pay $39.99 a month instead.1
Size Tiers and Billable Weight
Amazon does not always use your real product weight. It compares the real weight to the dimensional weight, which is length × width × height ÷ 139.4 Whichever number is bigger becomes your billable weight, except for small standard-size items and items over 150 lb, which use the unit weight.3 For bulky and extra-large items, Amazon counts the width and height as at least 2 inches.4 Amazon's size tiers run from small standard (up to 16 oz and 15 × 12 × 0.75 inches) through large standard, small bulky and large bulky to extra-large.3 That means a big, light box can cost as much to ship as a small, heavy one. Shrinking your packaging by even an inch can drop you into a cheaper size tier and save money on every single order.
FBA or FBM
With FBA, Amazon stores and ships your items. You pay fulfillment and storage fees, but you get Prime shipping and Amazon handles returns. With FBM, you ship the orders yourself. You skip FBA fees but pay for boxes, labels, postage, and your own time. FBA fees rise with the size and weight of the package, and stock that sells slowly keeps paying monthly storage, so FBM can cost less for heavy, bulky, or slow-selling items. If you restock from overseas, factor in your supplier lead time so you do not run out mid-season.
Costs Sellers Forget
Fees are only part of the story. Real profit also has to cover the cost to send stock into Amazon (inbound shipping), prep and labeling, PPC ad spend, and refunds. It also helps to set aside part of your price for returns and damaged stock. Don't forget income taxes either.
Margin, ROI, and Break-Even
Net margin is your profit divided by your revenue.7 It shows how much of each sale you keep. ROI is your profit divided by your costs. It shows how hard your cash is working. Break-even price is the lowest price you can charge without losing money. Many ecommerce businesses aim for a net profit margin of 10% to 20%, though results vary widely.7 The margin in this calculator is before income tax. If your margin is thin, one price drop from a competitor or one fee change can push you into a loss.
Ways to Improve Profit
- Lower your product cost by ordering more units or finding a better supplier.
- Make your package smaller or lighter to cut the FBA fee.
- Send in less stock at a time so storage fees stay low, especially before the holidays.
- Cut wasted ad spend by pausing keywords that do not sell, and watch your customer acquisition cost against customer lifetime value.
- Test a slightly higher price. A small raise often adds more profit than more sales at a low price.
Fee rates and FBA charges change over time and are different in each Amazon marketplace. Always check the current fee schedule in Seller Central before you commit to a price or place a big order.