Accurately determine your FedEx shipping charges based on package dimensions using our 2017 calculator.
Calculate Dimensional Weight
Enter the longest dimension of your package in inches.
Enter the second longest dimension of your package in inches.
Enter the shortest dimension of your package in inches.
Enter the actual weight of your package in pounds.
139 (Standard – US, International Economy, International Priority)
166 (Retail – US, International Economy, International Priority)
Select the dimensional factor applicable to your FedEx service. For 2017, 139 and 166 were common.
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Calculated Volumetric Weight (lbs)
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Chargeable Weight (lbs)
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Shipped By
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Formula: (Length × Width × Height) / Dimensional Factor = Volumetric Weight. The Chargeable Weight is the greater of the Actual Weight or the Volumetric Weight.
Weight Comparison: Actual vs. Volumetric
Chart showing the actual weight versus the calculated volumetric weight.
Calculation Details
Metric
Value
Unit
Length
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in
Width
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in
Height
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in
Actual Weight
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lbs
Dimensional Factor
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Volume (in³)
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in³
Calculated Volumetric Weight
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lbs
Chargeable Weight
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lbs
Shipping Basis
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Detailed breakdown of the dimensional weight calculation inputs and outputs.
FedEx Dimensional Weight Calculator 2017: Understanding Your Shipping Costs
What is FedEx Dimensional Weight?
FedEx dimensional weight, often called "DIM weight," is a pricing technique used by FedEx and other carriers to determine shipping charges. Instead of solely relying on the actual weight of a package, carriers also consider the package's volume. If a package is large but lightweight, the carrier may charge based on its dimensional weight rather than its actual weight. This is because lighter, bulkier items take up more space on delivery vehicles, and carriers price their services to account for this occupied space. Understanding the FedEx dimensional weight calculator 2017 is crucial for accurately estimating and managing shipping expenses.
Who should use it: Anyone shipping packages with FedEx, especially businesses that frequently send out products, e-commerce sellers, logistics managers, and individuals sending large, lightweight items. Knowing how to use the FedEx dimensional weight calculator 2017 helps prevent unexpected shipping costs and allows for better budget planning.
Common misconceptions: A common misconception is that dimensional weight only applies to extremely large packages. In reality, it can affect packages of many sizes. Another misconception is that the calculation is overly complex; however, with a tool like the FedEx dimensional weight calculator 2017, it becomes straightforward. Some also believe the dimensional factor is constant, but it can vary by service and year, underscoring the importance of using a calculator specific to the relevant period, like the FedEx dimensional weight calculator 2017.
FedEx Dimensional Weight Formula and Mathematical Explanation
The core of determining FedEx dimensional weight lies in a simple formula that converts a package's physical dimensions into a theoretical weight. This calculated weight is then compared to the package's actual weight to determine the billable weight.
Step-by-step derivation:
Measure Dimensions: Obtain the Length (L), Width (W), and Height (H) of the package in inches. Ensure you measure the longest dimension as Length, the second longest as Width, and the shortest as Height.
Calculate Volume: Multiply the three dimensions together: Volume = L × W × H. This gives the total cubic inches of space the package occupies.
Apply Dimensional Factor: Divide the calculated Volume by the applicable FedEx Dimensional Factor. For 2017, common factors were 139 (for standard services) and 166 (for retail or specific services). This yields the Volumetric Weight.
Volumetric Weight (lbs) = (L × W × H) / Dimensional Factor
Determine Chargeable Weight: Compare the Volumetric Weight to the package's Actual Weight (AW). The Chargeable Weight (CW) is the greater of the two.
Chargeable Weight (lbs) = max(Actual Weight, Volumetric Weight)
This comparison ensures that FedEx charges appropriately for either the physical space a package occupies or its actual mass, whichever results in a higher shipping cost.
Variables in the FedEx Dimensional Weight Calculation
Variable
Meaning
Unit
Typical Range (2017)
Length (L)
Longest dimension of the package.
inches (in)
≥ 1
Width (W)
Second longest dimension of the package.
inches (in)
≥ 1
Height (H)
Shortest dimension of the package.
inches (in)
≥ 1
Actual Weight (AW)
The measured weight of the package.
pounds (lbs)
≥ 0.1
Dimensional Factor
A constant used to convert volume to a theoretical weight. Varies by service and carrier.
(in³/lb)
139 or 166 (for FedEx in 2017)
Volume
The total space occupied by the package.
cubic inches (in³)
L × W × H
Volumetric Weight
The theoretical weight calculated from dimensions.
pounds (lbs)
Volume / Dimensional Factor
Chargeable Weight (CW)
The weight used by FedEx for billing purposes.
pounds (lbs)
max(AW, Volumetric Weight)
Key variables and their definitions used in calculating FedEx dimensional weight for 2017.
Practical Examples (Real-World Use Cases)
Example 1: Shipping a Lightweight, Bulky Item
Imagine shipping a large but lightweight decorative pillow for a customer.
Inputs:
Length: 24 inches
Width: 18 inches
Height: 6 inches
Actual Weight: 3 lbs
Dimensional Factor (using 139 for standard service): 139
Calculation:
Volume = 24 in × 18 in × 6 in = 2,592 in³
Volumetric Weight = 2,592 in³ / 139 = 18.65 lbs (rounded up to nearest half pound per FedEx rules)
Result Interpretation: Although the pillow only weighs 3 lbs, its dimensions result in a volumetric weight of 18.65 lbs. FedEx will charge shipping based on 18.65 lbs, not the actual weight. This highlights the importance of the FedEx dimensional weight calculator 2017 for accurately estimating costs for bulky items.
Example 2: Shipping a Dense, Small Item
Consider shipping a small, dense product like a metal component.
Result Interpretation: In this case, the actual weight (15 lbs) is significantly higher than the calculated volumetric weight (2.30 lbs). Therefore, FedEx will bill based on the actual weight of 15 lbs. This example shows that the FedEx dimensional weight calculator 2017 is useful even when actual weight is the primary factor, as it confirms you aren't overpaying.
How to Use This FedEx Dimensional Weight Calculator 2017
Our calculator simplifies the process of determining your FedEx shipping costs. Follow these steps for accurate results:
Measure Accurately: Use a measuring tape to find the Length, Width, and Height of your package in inches. Identify the longest side as Length, the second longest as Width, and the shortest as Height.
Weigh Your Package: Use a scale to determine the actual weight of the package in pounds (lbs).
Select the Dimensional Factor: Choose the correct dimensional factor based on your FedEx service. For 2017, 139 was standard for most services like US Domestic, International Economy, and International Priority. The factor 166 was often used for specific retail or time-definite services. If unsure, consult your FedEx shipping guide or use 139 as a default.
Enter Values: Input the measured dimensions (Length, Width, Height) and the Actual Weight into the calculator fields. Select the appropriate Dimensional Factor from the dropdown.
Calculate: Click the "Calculate" button.
How to read results:
Primary Result (Dimensional Weight): This large, highlighted number shows the calculated dimensional weight in pounds (lbs). This is the weight FedEx *might* use for billing.
Volumetric Weight: This shows the direct result of dividing the package volume by the dimensional factor.
Chargeable Weight: This is the critical number. It's the higher value between your package's Actual Weight and its calculated Volumetric Weight. This is the weight FedEx will bill you for.
Shipping Basis: Indicates whether your shipping cost will be based on Actual Weight or Volumetric Weight.
Detailed Table & Chart: Provides a full breakdown of your inputs and calculated metrics, useful for record-keeping and understanding the calculation.
Decision-making guidance: If the Chargeable Weight is significantly higher than your Actual Weight, consider ways to optimize your packaging. Can you use a smaller box? Can you consolidate multiple items into one shipment? Understanding these figures allows for cost-saving strategies. For businesses using FedEx shipping, integrating this understanding into packaging design and logistics planning is key to managing overall shipping expenses effectively.
Key Factors That Affect FedEx Dimensional Weight Results
Several factors influence the dimensional weight calculation and, consequently, your shipping costs. Understanding these elements is vital for accurate estimation and cost management.
Package Dimensions: This is the most direct factor. Larger dimensions mean higher volume, which increases the potential for the dimensional weight to exceed the actual weight. Careful measurement is crucial.
Actual Weight: If the package is dense and heavy for its size, the actual weight will likely be the determining factor for the chargeable weight. This is common for items like machinery parts, books, or metal goods.
Dimensional Factor: The specific factor (e.g., 139, 166) used by FedEx for a particular service is critical. A lower dimensional factor (like 139) results in a higher volumetric weight compared to a higher factor (like 166) for the same dimensions. Choosing the correct service impacts this factor.
Shipping Service Level: Different FedEx services (e.g., FedEx Express Saver vs. FedEx International Priority) may employ different dimensional factors. Always verify the applicable factor for the chosen service. The FedEx dimensional weight calculator 2017 defaults to common 2017 factors, but verification is recommended.
Packaging Material and Strategy: The choice of box size and cushioning material significantly impacts the final dimensions. Over-packaging lightweight items can drastically increase dimensional weight charges. Optimizing packaging can lead to substantial savings.
Rounding Rules: FedEx typically rounds the calculated volumetric weight up to the nearest half pound (or pound, depending on the specific service and region). This means a fraction of a pound can sometimes increase the chargeable weight. Our calculator uses standard rounding for demonstration.
Currency and Economic Conditions: While not directly part of the dimensional weight calculation itself, broader economic factors and currency exchange rates can influence the perceived cost of shipping internationally, affecting the overall financial impact of dimensional weight pricing.
Frequently Asked Questions (FAQ)
What is the dimensional factor for FedEx in 2017?
For FedEx in 2017, the most common dimensional factors were 139 (for services like FedEx Express U.S. Domestic, International Economy, and International Priority) and 166 (often used for certain retail services or time-definite shipments). Always confirm with FedEx documentation for the specific service used.
Does dimensional weight apply to all FedEx services?
Dimensional weight applies to most FedEx Express and FedEx Ground shipments. However, there might be exceptions or different calculation methods for freight or specialized services. It's essential to check the specific terms for the service you are using.
How are the dimensions measured for FedEx?
FedEx measures the three dimensions of the package: Length, Width, and Height. Length is typically considered the longest dimension, followed by Width, and then Height as the shortest. Ensure measurements are taken accurately in inches.
What if my package dimensions exceed a certain limit?
FedEx has limits for standard package sizes. If your package exceeds these limits (e.g., Length + Girth > 165 inches for FedEx Express), it may be subject to additional surcharges or classified as oversized freight, which has different pricing structures.
How does the FedEx dimensional weight calculator 2017 differ from current calculators?
The primary difference is the dimensional factor used. While the calculation method (Volume / Factor) remains consistent, the specific factors (like 139 or 166 for 2017) may have been updated or changed by FedEx in subsequent years. Always use a calculator relevant to the year of service.
Should I round my dimensions or weight?
It's best to measure as accurately as possible. FedEx typically rounds the *final chargeable weight* up to the nearest half pound or pound, depending on the service. For inputting into the calculator, use your measured values.
What is 'girth' in shipping terms?
Girth is the distance around the thickest part of the package perpendicular to its length. It's calculated as (2 × Width) + (2 × Height). For some services, total size limits are based on Length + Girth.
How can I reduce my shipping costs related to dimensional weight?
Optimize your packaging by using the smallest box possible for your item. Avoid excessive empty space. Consider consolidating multiple items into a single, appropriately sized shipment if feasible. Regularly review your shipping practices and compare carrier rates.