The Size Tier Calculator helps you determine your product's size tier and expected FBA fulfillment fees. This guide shows you how to use it effectively.

What are Amazon Size Tiers?

Amazon categorizes products into size tiers based on dimensions and weight. Each tier has different FBA fulfillment fees. Smaller tiers have lower fees.

Step 1: Measure Your Product

• Length: Longest side in inches
• Width: Median side in inches
• Height: Shortest side in inches
• Weight: Product weight in pounds

Step 2: Enter Dimensions

Enter measurements in inches. The calculator will determine your size tier automatically.

Step 3: Select Marketplace

Choose your marketplace. Size tier criteria are similar, but fees vary by marketplace.

Understanding Size Tiers

Standard Size Tiers

• Small Standard: Smallest items, lowest fees
• Large Standard: Larger standard items, higher fees

Oversize Tiers

• Small Oversize: Larger than standard
• Medium Oversize: Even larger
• Large Oversize: Largest items, highest fees

Best Practices

• Measure products accurately for correct tier classification
• Optimize packaging to reduce size tier
• Smaller tiers = lower fees = higher profit
• Check size tier before finalizing product design
• Compare fees across different size tiers