Shipping Costs Help Center (Weights, Fees, Savings)

Shipping cost is usually based on a combination of weight, package size, service level, and optional services. This page gathers the most important resources to help you estimate costs accurately and reduce your total shipping spend.

1) Estimate Your Shipping Cost (Fast)

If you want a quick estimate before you ship:

• Use your package weight and dimensions
• Compare the impact of dimensional (volumetric) weight
• Check whether repacking could lower cost

2) Understand Weight Pricing (Avoid Surprises)

Dimensional Weight (Volumetric Weight)

Carriers may charge based on space (size) instead of scale weight, especially for large, lightweight packages.

Repacking to Reduce Cost

Oversized boxes and empty space can increase dimensional weight. Repacking can reduce volume and lower total cost.

3) Fees and Pricing (What You’re Paying For)

Shipping totals can include:

• Carrier shipping cost (based on weight/size and service level)
• Optional services (for example, repacking or special handling)
• Any applicable platform fees (based on your pricing model)
• Duties/taxes charged by destination customs (separate from shipping)

4) How to Lower Your Total Shipping Cost (Practical Tips)

Consolidate multiple packages (when it makes sense)

If you shop from multiple stores, combining packages into fewer shipments can reduce shipping spend (depending on item mix and total volume).

Reduce volume first, then ship

If your package is lightweight but bulky, focus on reducing size through repacking.

Avoid oversized retailer packaging

Shoeboxes, gift packaging, and large outer cartons can significantly increase dimensional weight.

Use estimates early

Run an estimate before you ship to prevent surprises and plan consolidation timing.

Start with our shipping calculator

5) Most Common Shipping Cost Questions (Quick Links)

Use these shortcuts based on what you’re trying to solve:

• “Why is my shipment priced higher than expected?”Start with dimensional weight.




• “Where can I see fee details?”Simply sign up for Boxit4me.




• “I just want an estimate right now.”Use our calculator.

Frequently Asked Questions

Is shipping cost based only on weight?

Not always. If the package is large relative to its weight, carriers may charge based on dimensional weight.

Why do my costs change after the package arrives?

Final cost can change if the measured dimensions/weight differ from estimates, or if you add optional services (like repacking).

Does repacking always reduce cost?

Not always, but it often helps when the package has extra empty space or bulky packaging that increases dimensional weight.

Where can I see all fees?

For a full breakdown, sign up now.