DimPack3D is a free online 3D packaging calculator designed for e-commerce sellers, Amazon FBA sellers, and freight forwarders. It helps you calculate optimal product-to-carton packing, container loading, CBM (cubic meters), and Amazon FBA size tiers with interactive 3D visualization.

How do I calculate CBM (Cubic Meters)?

To calculate CBM, enter your carton dimensions (length, width, height) in centimeters. DimPack3D automatically converts to cubic meters using the formula: CBM = (Length × Width × Height) / 1,000,000. The calculator also shows total CBM for multiple cartons in your shipment.

What are Amazon FBA size tiers?

Amazon FBA size tiers determine fulfillment fees based on product dimensions and weight. Tiers include Small Standard, Large Standard, Large Bulky, and Extra-Large. DimPack3D uses the 2025 Amazon FBA standards to classify your products and estimate fees.

How many boxes can fit in a 40-foot container?

The number of boxes depends on your carton dimensions. A 40GP container has internal dimensions of approximately 1203 × 235 × 239 cm (67.5 CBM). DimPack3D's container loading calculator optimizes placement and shows exactly how many cartons fit with 3D visualization.

Is DimPack3D free to use?

Yes, DimPack3D is completely free with no registration required. All features including 3D visualization, packing calculator, container loading, and FBA size tier calculations are available at no cost. Your data is saved locally in your browser.

What is dimensional weight and how is it calculated?

Dimensional weight (DIM weight) is a pricing technique for freight that considers package size. It's calculated by multiplying Length × Width × Height and dividing by a DIM factor (typically 5000 for air freight, 6000 for sea freight). Carriers charge the greater of actual weight or dimensional weight.

How do I calculate products per carton?

Calculate products per carton by dividing carton dimensions by product dimensions for each axis (length, width, height), then multiply the results. Try all 6 product orientations (rotations) to find the maximum. For example: carton 60×40×40cm, product 10×10×20cm = 6×4×2 = 48 products.

Should I rotate products to fit more in a carton?

Yes! Rotating products can significantly increase the number that fit per carton. Our calculator tests all 6 possible orientations automatically to find the optimal arrangement. Always verify the product can be safely stored in different orientations.

What is packing efficiency?

Packing efficiency is the percentage of carton volume actually used by products: (Total product volume ÷ Carton volume) × 100%. A good packing efficiency is 65-85%. Below 60% suggests you should consider a different carton size.

How do I choose the right carton size?

Choose carton size based on: 1) Product dimensions - carton should be a multiple of product size, 2) Weight limits - don't exceed 23kg for manual handling, 3) Shipping requirements - consider container dimensions, 4) Protection needs - allow space for padding.

Products Per Carton Calculator: Optimize Box Packing

1Basic Calculation Method

The basic method is to divide each carton dimension by the corresponding product dimension, then multiply the results.

// Basic Formula

Products = floor(CL/PL) × floor(CW/PW) × floor(CH/PH)

C = Carton dims, P = Product dims, floor = round down

Example Calculation

Carton: 60cm × 40cm × 40cm

Product: 10cm × 10cm × 20cm

Length: 60 ÷ 10 = 6 units
Width: 40 ÷ 10 = 4 units
Height: 40 ÷ 20 = 2 layers
Total: 6 × 4 × 2 = 48 products

2Product Rotation Strategy

By rotating products, you may find better arrangements. A rectangular product has 6 possible orientations.

6 Orientations

For product L×W×H, try: L×W×H, L×H×W, W×L×H, W×H×L, H×L×W, H×W×L

Rotation Optimization Example

Carton 60×40×40cm, Product 15×10×8cm:

15×10×8

4×4×5 = 80

10×15×8 ✓

6×2×5 = 60

10×8×15

6×5×2 = 60

8×10×15

7×4×2 = 56

Result: First orientation fits 80 products - the optimal choice.

3Packing Efficiency

// Packing Efficiency Formula

Efficiency = (Products × Product Volume) ÷ Carton Volume × 100%

<60%

Needs optimization

60-75%

Acceptable

75-85%

Excellent

4Carton Selection

Multiple Sizing Principle

Choose carton dimensions that are multiples of product dimensions to minimize wasted space.

Weight Limits

Cartons for manual handling should not exceed 23kg. Use smaller boxes for heavy items.

Standardize Cartons

Using 2-3 standard carton sizes simplifies logistics and container loading calculations.

53D Visualization

3D visualization tools let you see exactly how products are arranged in the carton, ensuring calculations match real-world requirements.

Our 3D Simulation Feature

DimPack3D's packing calculator includes interactive 3D simulation - rotate and zoom to see exact product placement.

6Use Our Calculator

Our calculator automatically tests all rotations to find the optimal arrangement, with 3D visualization preview.

Calculate Products Per Carton

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