How to calculate air freight cost per kg?

Unlocking Air Freight Costs: Calculating the Per-Kilogram Price

Understanding the cost of air freight can feel like navigating a complex maze. While many factors influence the final bill, a core element is understanding how the per-kilogram price is determined. It’s not as simple as just weighing your shipment; you need to factor in both its actual weight and its volumetric weight. Let’s break down the process to help you accurately estimate your shipping expenses.

The Weighty Dilemma: Actual vs. Volumetric Weight

Air freight companies typically charge based on whichever is greater: the actual weight of your shipment or its volumetric weight (also known as dimensional weight). This is because even relatively light but bulky items can take up significant space in the aircraft, reducing the amount of revenue-generating cargo the plane can carry.

1. Determining Actual Weight:

This is the straightforward part. Simply weigh your shipment (including packaging) using a calibrated scale. The weight is usually recorded in kilograms (kg).

2. Unveiling Volumetric Weight:

Volumetric weight is a calculated figure that reflects the amount of space your shipment occupies. Here’s how to calculate it:

• Measure the Dimensions: Obtain the length, width, and height of your shipment in centimeters (cm). It’s crucial to measure the outermost dimensions, including any protrusions or packaging.
• Calculate the Volume: Multiply the length, width, and height: Volume (cm³) = Length (cm) x Width (cm) x Height (cm)
• Convert to Cubic Meters: Divide the volume in cubic centimeters by 1,000,000: Volume (m³) = Volume (cm³) / 1,000,000
• Apply the Volumetric Conversion Factor: Air freight companies use a conversion factor to translate volume into weight. A common ratio is 1 cubic meter (m³) to 167 kilograms (kg). Therefore: Volumetric Weight (kg) = Volume (m³) x 167

Why 167 kg per Cubic Meter?

This number represents the density threshold. Shipments with a density lower than 167 kg/m³ are considered “lightweight” and will be charged based on their volumetric weight.

3. Choosing the Chargeable Weight:

Once you have both the actual weight and the volumetric weight in kilograms, compare them. The higher of the two is the chargeable weight. This is the weight that the air freight company will use to calculate your base shipping cost.

Example:

Let’s say you’re shipping a box with the following dimensions and weight:

• Length: 100 cm
• Width: 80 cm
• Height: 60 cm
• Actual Weight: 60 kg

Calculations:

• Volume (cm³): 100 cm x 80 cm x 60 cm = 480,000 cm³
• Volume (m³): 480,000 cm³ / 1,000,000 = 0.48 m³
• Volumetric Weight (kg): 0.48 m³ x 167 = 80.16 kg

Chargeable Weight:

Since 80.16 kg (volumetric weight) is greater than 60 kg (actual weight), the chargeable weight is 80.16 kg.

4. Calculating the Base Cost:

Once you have the chargeable weight, the freight forwarder will apply their per-kilogram rate. Let’s assume the rate is $5.00 per kg.

• Base Cost: 80.16 kg x $5.00/kg = $400.80

Important Considerations:

• Fuel Surcharges: Air freight costs typically include fuel surcharges, which fluctuate based on global fuel prices.
• Security Fees: Security screening fees are often added.
• Handling Charges: These cover the costs of loading, unloading, and handling your shipment at the airport.
• Other Fees: Be aware of potential charges for documentation, customs clearance, and insurance.
• Freight Forwarder Rates: Rates can vary significantly between freight forwarders. Shop around and compare quotes.
• Rounding: Freight forwarders may round up the chargeable weight to the nearest whole kilogram.

In Conclusion:

Calculating air freight cost per kilogram requires a clear understanding of the interplay between actual and volumetric weight. By carefully measuring your shipment and applying the correct formulas, you can gain a more accurate estimate of your shipping expenses and make informed decisions about your air freight needs. Remember to factor in all additional charges to avoid surprises and ensure you choose the most cost-effective shipping solution.

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