What Counts as an Oversize Product on Amazon?
You can sell almost anything on Amazon — but size matters. If Amazon classifies your product as oversize, your fees go up. So how do you know whether your package is oversize?
Start with Amazon’s size tiers
Amazon publishes a Product Size Tiers page in Seller Central that explains how items are classified by dimensions and weight. Use it to compare your retail-ready package (not just the item) against the tier limits. Exceeding a single threshold can push a product into an oversize tier.
Watch for edge cases
The size tiers page doesn’t always spell out every scenario, such as:
- special oversize designations
- single-unit weight rules
- packaging changes that tip an item into a higher tier
What this guide covers
In this guide, you’ll learn:
- how Amazon determines oversize vs. standard size
- which fees change when an item becomes oversize
- practical tips to avoid unexpected oversize charges
Amazon FBA Box Limits (Standard Shipments)
| Limit | Size |
|---|---|
| Maximum length | 36 inches |
| Maximum width | 25 inches |
| Maximum height | 25 inches |
| Maximum weight | 50 pounds |
| Minimum size | 6 × 4 × 1 inches |
| Jewelry or watches | Boxes must not exceed 40 pounds |
Standard box limits
Use these caps for Amazon FBA standard shipments.
- Maximum length – 36 inches
- Maximum width – 25 inches
- Maximum height – 25 inches
- Maximum weight – 50 pounds
- Minimum size – 6 × 4 × 1 inches
- Jewelry or watches – box max 40 pounds
Tip – keep packaging tight to avoid oversize reclassification
Penalties
Non-compliant boxes can lead to fees, shipment rejection, or shipping restrictions. Sticking to these limits helps avoid delays and extra costs.
Amazon FBA: Boxes with a Single Oversize Item
- A box with one oversize item may exceed 25 inches on a side only for length, and only up to 36 inches total length.
- Width and height stay capped at 25 inches each.
- The standard box weight limit is 50 pounds.
When is a Box over 25 Inches Allowed?
- Use a box longer than 25 inches only if it contains a single oversize unit whose size requires it.
- Boxes with multiple standard items or multiple oversize items must stay within 25 × 25 × 25 inches.
Handling and labels
- If the single item weighs more than 50 pounds, apply the required safety labels:
- Team Lift for 50–100 lbs
- Mechanical Lift for over 100 lbs
Other Considerations
- Dimensional weight still applies; oversized packaging can raise billed weight.
- Non-compliant boxes can trigger extra fees, rejection, or shipping restrictions.
- Policies can change; always confirm the latest rules in Seller Central before shipping.
What are the Costs Associated with Selling Oversized Products on Amazon?
Selling oversized items on Amazon costs more. Expect higher fulfillment fees (pick, pack, ship), pricier storage, steeper inbound shipping, possible overweight charges, and greater risk from slow-moving or overstocked inventory. Price accordingly to protect margins.
Key Cost Factors
- Storage fees – oversized rates are higher; holiday months cost more.
- Inbound shipping – larger, heavier cartons cost more to send to FBA.
- Long-term storage – aged inventory triggers extra fees.
- Overweight charges – per-pound fees if you exceed limits.
- Overstock risk – too much inventory inflates monthly and long-term storage.
Why costs are higher
Oversized items need more space, heavier packaging, and specialized handling. Amazon’s higher fees reflect the extra resources required.
Ways to reduce costs
- Accurate pricing – build all fees into your price before you launch.
- Inventory control – forecast demand, avoid overstock, and remove or liquidate slow movers.
- Margin reviews – recalc landed cost and contribution margin regularly; adjust price, packaging, or assortment if margins slip.
Do Amazon Oversize Fees Differ for Dangerous Goods?
Yes. Oversize fees for dangerous goods (hazmat) are usually higher than for non-dangerous goods because of added handling and storage requirements. Always confirm the exact fees for your product in Seller Central.
Why Dangerous Goods Cost More
- Special handling – extra safety procedures and trained staff.
- Storage precautions – segregated areas and stricter compliance rules.
- Transport compliance – labeling, documentation, and carrier restrictions.
How to find your exact fees
- Identify status – confirm if your ASIN is classified as dangerous goods.
- Determine size tier – place the product in the correct oversize tier (e.g., large oversize, special oversize).
- Check Seller Central – review “Fulfillment fees for dangerous goods” and “Large and Oversize” tables for current rates.
Other Considerations
- Fees change – always rely on the latest tables in Seller Central.
- Packaging and design – where legally possible, design to avoid hazmat classification to reduce fees.
- Account specificity – your Seller Central account is the primary source for the most current, ASIN-specific fees.
Amazon Fulfillment Fees for Standard Products
Amazon FBA charges two main fees for standard products:
- FBA Fulfillment Fees – per-unit charges for picking, packing, and shipping, based on size and weight.
- Monthly Inventory Storage Fees – charged by cubic foot and season.
You may also see removal, long-term storage, inbound placement, and other ad-hoc fees. Exact costs depend on your product’s size, weight, and type. Use the FBA calculator in Seller Central to price accurately.
FBA Fulfillment Fees (by product type)
- Small Standard Items – typically up to 16 oz.
- Large Standard Items – larger than small standard, up to 20 lb.
- Apparel – follows a separate fee table from non-apparel.
- Dangerous Goods – higher fees due to special handling.
Other common fees
- Monthly storage – varies by month/season and your inventory’s cubic footage.
- Aged/long-term storage – extra charges for slow-moving inventory.
- Removals and disposals – per-unit fees when clearing stock.
- Inbound placement and prep – fees for specific inbound routing or prep services.
How to estimate your costs
- Measure and weigh your retail-ready unit.
- Identify the correct size tier and product type (standard, apparel, dangerous goods).
- Use the FBA Revenue Calculator in Seller Central to model total landed and per-unit margins.
| Size tier | Shipping weight | Fulfillment fee |
|---|---|---|
| Small standard 1 | 2 oz or less | $3.06 |
| 2+ to 4 oz | $3.15 | |
| 4+ to 6 oz | $3.24 | |
| 6+ to 8 oz | $3.33 | |
| 8+ to 10 oz | $3.43 | |
| 10+ to 12 oz | $3.53 | |
| 12+ to 14 oz | $3.60 | |
| 14+ to 16 oz | $3.65 | |
| Large standard | 4 oz or less | $3.68 |
| 4+ to 8 oz | $3.90 | |
| 8+ to 12 oz | $4.15 | |
| 12+ to 16 oz | $4.55 | |
| 1+ to 1.25 lb | $4.99 | |
| 1.25+ to 1.5 lb | $5.37 | |
| 1.5+ to 1.75 lb | $5.52 | |
| 1.75+ to 2 lb | $5.77 | |
| 2+ lb to 2.25 lb | $5.87 | |
| 2.25+ lb to 2.5 lb | $6.05 | |
| 2.5+ lb to 2.75 lb | $6.21 | |
| 2.75+ lb to 3 lb | $6.62 | |
| 3 lb to 20 lb | $6.92 + $0.08 per 4 oz interval above first 3 lb | |
| Large bulky | 0 to 50 lb | $9.61 + $0.38/lb interval above first lb |
| Extra-large 0 to 50 lb | 0 to 50 lb | $26.33 + $0.38/lb interval above first lb |
| Extra-large 50+ to 70 lb | 50+ to 70 lb | $40.12 + $0.75/lb interval above 51 lb |
| Extra-large 70+ to 150 lb | 70+ to 150 lb | $54.81 + $0.75/lb interval above 71 lb |
| Extra-large 150+ lb 1 | 150+ lb | $194.95 + $0.19/lb interval above 151 lb |
| Size tier | Shipping weight | Fulfillment fee |
|---|---|---|
| Small standard 1 | 4 oz or less | $3.27 |
| 4+ to 8 oz | $3.42 | |
| 8+ to 12 oz | $3.72 | |
| 12+ to 16 oz | $3.98 | |
| Large standard | 4 oz or less | $4.25 |
| 4+ to 8 oz | $4.45 | |
| 8+ to 12 oz | $4.67 | |
| 12+ to 16 oz | $5.12 | |
| 1+ to 1.5 lb | $5.90 | |
| 1.5+ to 2 lb | $6.14 | |
| 2+ to 2.5 lb | $6.60 | |
| 2.5+ to 3 lb | $6.81 | |
| 3+ lb to 20 lb | $6.92 + $0.16 /half-lb above first 3 lb | |
| Large bulky | 0 to 50 lb | $9.61 + $0.38/lb interval above first lb |
| Extra-large 0 to 50 lb | 0 to 50 lb | $26.33 + $0.38/lb interval above first lb |
| Extra-large 50+ to 70 lb | 50+ to 70 lb | $40.12 + $0.75/lb interval above 51 lb |
| Extra-large 70+ to 150 lb | 70+ to 150 lb | $54.81 + $0.75/lb interval above 71 lb |
| Extra-large 150+ lb 1 | 150+ lb | $194.95 + $0.19/lb interval above 151 lb |
| Size tier | Shipping weight | Fulfillment fee |
|---|---|---|
| Small standard 1 | 2 oz or less | $4.03 |
| 2+ to 4 oz | $4.09 | |
| 4+ to 6 oz | $4.16 | |
| 6+ to 8 oz | $4.22 | |
| 8+ to 10 oz | $4.30 | |
| 10+ to 12 oz | $4.36 | |
| 12+ to 14 oz | $4.41 | |
| 14+ to 16 oz | $4.47 | |
| Large standard | 4 oz or less | $4.50 |
| 4+ to 8 oz | $4.71 | |
| 8+ to 12 oz | $4.94 | |
| 12+ to 16 oz | $5.14 | |
| 1+ to 1.25 lb | $5.59 | |
| 1.25+ to 1.5 lb | $5.97 | |
| 1.5+ to 1.75 lb | $6.12 | |
| 1.75+ to 2 lb | $6.26 | |
| 2+ to 2.25 lb | $6.33 | |
| 2.25+ to 2.5 lb | $6.51 | |
| 2.5+ to 2.75 lb | $6.67 | |
| 2.75+ to 3 lb | $7.08 | |
| 3+ to 20 lb | $7.38 + $0.08 per 4 oz interval above first 3 lb | |
| Large bulky | 0 to 50 lb | $10.33 + $0.38/lb interval above first lb |
| Extra-large 0 to 50 lb | 0 to 50 lb | $28.44 + $0.38/lb interval above first lb |
| Extra-large 50+ to 70 lb | 50+ to 70 lb | $43.33 + $0.75/lb interval above 51 lb |
| Extra-large 70+ to 150 lb | 70+ to 150 lb | $61.94 + $0.75/lb interval above 71 lb |
| Extra-large 150+ lb 1 | 150+ lb | $219.53 + $0.19/lb interval above 151 lb |
Shipping weight for calculating fees for small standard and extra-large 150+ lbs is based on unit weight. All other size tiers use greater of unit or dimensional weight. For detailed definitions of each size tier, go to product size tiers.
