Container Load Calculator
Calculate shipping container capacity and optimize loading
Container Type
Carton/Pallet Dimensions
Maximum layers that can be stacked
Loading Capacity
Capacity Analysis
Container Details
Loading Pattern
When to Use Container Load Calculator
Import Planning
Determine how many units fit in a container before placing orders. Optimize order quantities to maximize container utilization and reduce per-unit shipping costs.
Cost Optimization
Calculate cost per unit by dividing container freight cost by loading capacity. Compare 20ft vs 40ft containers to find the most economical option.
Packaging Design
Test different carton dimensions to maximize container utilization. Small changes in packaging size can significantly impact how many units fit.
Warehouse Planning
Plan warehouse space requirements based on incoming container volumes. Coordinate receiving schedules and labor allocation for container unloading.
Quote Verification
Verify supplier loading calculations and freight quotes. Ensure you're not overpaying for partially filled containers or underutilized space.
Mixed Load Planning
Calculate capacity for containers with multiple product types. Optimize loading patterns to fit different carton sizes efficiently in one shipment.
Frequently Asked Questions
How do you calculate container load capacity?
Calculate by dividing container internal volume by carton volume to get theoretical capacity. Then factor in stacking limitations, weight restrictions, and loading efficiency (typically 85-95%). For example, a 20ft container (33.1 CBM) divided by 0.05 CBM cartons gives 662 theoretical units. With 90% efficiency, actual capacity is about 596 cartons. Always verify both volume and weight capacity as containers have maximum payload limits that may be reached before volume is filled.
What are standard shipping container sizes?
Standard sizes are 20ft (TEU), 40ft, and 40ft High Cube. A 20ft container has internal dimensions of 19.4ft x 7.7ft x 7.9ft (5.9m x 2.35m x 2.39m) with 33.1 CBM capacity and 28,200 kg max payload. A 40ft is 39.5ft x 7.7ft x 7.9ft (12m x 2.35m x 2.39m) with 67.5 CBM and 26,700 kg payload. A 40ft HC is 39.5ft x 7.7ft x 8.9ft (12m x 2.35m x 2.69m) with 76.2 CBM and 26,500 kg payload. High Cube containers offer 15% more volume for lightweight cargo.
How many pallets fit in a 40ft container?
A 40ft container fits 20-21 standard US pallets (48x40 inches) in a single layer when loaded lengthwise, or 24 Euro pallets (47.2x31.5 inches). A 40ft High Cube can accommodate 2 layers if pallet height permits, potentially doubling capacity to 40-48 pallets. Actual capacity depends on pallet dimensions, cargo height, stacking ability, and weight distribution. Always calculate both volume and weight to determine true capacity.
What is container utilization rate?
Container utilization measures space efficiency, calculated as (actual loaded volume / total container volume) x 100. Good utilization is 85-95%. Below 80% indicates wasted space and higher per-unit costs. Above 95% may cause loading difficulties or damage. Factors affecting utilization include carton size standardization, stacking patterns, void spaces between cartons, and loading method efficiency. Optimizing carton dimensions to fit container dimensions can significantly improve utilization.
Should I use 20ft or 40ft container?
Choose based on volume and cost efficiency. A 40ft container costs only 50-70% more than 20ft but offers double capacity, making it more cost-effective per unit for larger shipments. Use 20ft for volumes under 30 CBM, mixed cargo, or when weight limits are a concern. Use 40ft or 40ft HC for high-volume shipments where you can fill most of the container. Calculate cost per CBM for each option. If you can fill 70%+ of a 40ft container, it's usually more economical than using two 20ft containers.
What is the weight limit for shipping containers?
Maximum gross weight (container + cargo) is typically 30,480 kg (67,200 lbs). Payload capacity varies: 20ft containers allow approximately 28,200 kg, 40ft containers 26,700 kg, and 40ft HC 26,500 kg. Always check both volume and weight capacity. Dense cargo like machinery may hit weight limits before filling volume, while lightweight items like textiles may fill volume first. Verify limits with your carrier as regulations vary by country, route, and road weight restrictions in destination countries.
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