How to Measure a Box for Shipping

Shipping boxes are required if you need to move items from one place to another. These shipping boxes provide easy and better packaging and safeguard your products from any damage during transit. 

Do thorough research and buy shipping boxes from a reputable and reliable company, as quality boxes can withstand the long journey. 

No matter which service provider you choose, the shipping cost will vary depending on its size. To ensure you’re paying the right fees for shipping, it is essential to know the exact dimensions of the shipping box. For that, you need to know how to measure a box for shipping.

Use an accurate measuring tool to find the length, width, and height of the box. You can then use these measurements to calculate other metrics such as total size and dimensional weight, and the package’s billable weight. 

This guide will help you understand how to choose the correct box dimensions for shipping, box measurements for shipping, standard package dimensions, and more. 

Understanding Box Dimensions

To make the right-sized shipping box for your product, you need to discuss the appropriate box dimensions with your packaging supplier. However, measuring a shipping box accurately isn’t as easy as it looks. A simple mistake can prove to be costly and time-consuming.

It is important to measure shipping box dimensions correctly for hassle-free shipping and storage. The standard formula of measurement is Length x Width x Height (L x W x H). 

The length refers to the longest side of the box, the shorter side is the width, and to get the height, you need to measure the distance from top to bottom. Understanding these basics helps avoid mistakes and meets your carrier’s requirements. 

The standard industry measurement is Length x Width x Height (L x W x H) or Length x Width x Depth (L x W x D). This measurement is a standard process everywhere in the shipping and logistics industry.  

Maximizing space in a shipping box is crucial for efficient packaging and shipping. By following the standard measurement, eCommerce companies can ensure that their products fit into boxes, lowering the risk of damage during transit. 

Proper packaging not only saves on materials but also reduces shipping costs, making it a win-win for both businesses and customers.

• How to measure dimensions of a box. If you measure the dimensions of a package in inches. We assume:

Length = 30″

Width = 10″

Height = 15″

Shipping costs can vary significantly depending on various factors, including the type of item, weight, height, shipping distance, destination, and others. A carrier will provide you with the final figure after calculating these factors.

Leading carriers often revise their shipping costs and use the standard measurement to keep up with their soaring expenses. 

The information in measurement gives eCommerce businesses a clear idea about the range of packages or box sizes, which makes shipping cost calculation less complicated. Package dimensions length width height matter a lot here. 

Step-by-Step Guide to Measuring a Box

To measure a package, you need a measuring tool, like a tape measure or ruler, and a pencil and paper to note dimensions.

How to measure package dimensions. To measure a shipping box, you need to figure out its outside dimensions. 

Step 1: Measuring the Length

First, identify the longest side of the box. This will be the length of the box. Now, place your measuring tool so that it covers from the leftmost edge to the rightmost edge of the box. 

Ensure that the measuring tool is aligned straight, not at an angle, to avoid inaccuracies. Keep in mind that exact accuracy is the key, so ensure the tool is properly aligned.

Step 2: Measuring the Width

Next, you need to measure the width of the box, which is the side next to the length. Again, make sure you place the measuring tool straight from one edge to the other. 

The width of a shipping box is the shorter side. Similar to measuring the length, make sure the tool is perfectly horizontal to measure accurately.

Step 3: Measuring the Height

To get height, you need to measure a shipping box from the top down to the base. If the shipping box is closed, you can measure the external sides. If the box is open, you can also measure from the inside, from the top edge down to the bottom. 

Make sure that your measuring tool is perpendicular to the base of the box so that it does not slant, which could result in an incorrect measurement.

Understanding Dimensional (DIM) Weight

The dimensional (DIM) weight method is the standard measurement that all leading shipping carriers apply to calculate shipping costs. DIM weight is the dimension of a package to figure out the shipping cost.

The DIM weight is primarily about managing space. Due to less space in the shipping truck, carriers use the DIM weight method to measure the package density and shipping costs. It means a carrier uses the DIM method even when you ship a lightweight package.

To calculate the dimensional weight you need to multiply the package length, height, and width, considering the longest and shortest points of the sides. Also, the carrier considers the parcel’s cubic size (inches) to calculate the DIM weight (pounds).

The method of calculating the DIM weight is as follows:

• A carrier takes into account the package dimensions with the longest point on the sides. To measure the package, they will also check if there is any misalignment in the parcels. These issues may cost you significantly higher shipping fees. 

• A carrier generally considers the closest whole number when calculating the DIM weight with package dimensions length, width, height.

Calculating the DIM Weight

• Then the carrier calculates the cubic size of the package by multiplying the dimensions. 

• Next, the carrier divides the package’s cubic size by a DIM divisor. 

• Both UPS and FedEx use 139 cubic inches/pound as the DIM divisor for calculating domestic and international shipping costs.

To increase the profit margin, shipping companies weigh a package based on its dimensions (length x width x height) instead of the actual weight. 

Package Weight 

The package weight is about the weight of the shipped items. For this, no DIM divisor or calculation is needed.  

If the package weight is more than the DIM weight, the carrier will use it to calculate shipping costs. The larger and bulkier the package, the higher the shipping cost.

Carrier-Specific Measurement Guidelines

For Canada-based carriers like UPS and FedEx, they have specific box measurement guidelines. Usually, packages should not exceed 108 inches (274 cm) in length, and the length plus girth together should not exceed 165 inches (419 cm). 

Measuring the outside dimensions of the package is critical work, including the flaps and tape. You need to consider both the actual weight and the dimensional weight (calculated based on size) when calculating shipping costs. 

Detailed Guidelines:

1. Measuring Dimensions:

Length: The longest side of the package. 

Width: The second-longest side, measured perpendicular to the length. 

Height: The distance from the top to the bottom of the package. 

Girth: Two times the width plus two times the height (2W + 2H). 

2. UPS Guidelines: 

Packages can be up to 108 inches long.

Length plus girth cannot exceed 165 inches.

The weight limit is 150 lbs (68 kg).

Oversized packages may incur additional charges and are subject to dimensional weight calculations.

3. FedEx Guidelines: 

For FedEx, package dimensions length, width, and height can be up to 108 inches long.

Length plus girth cannot exceed 165 inches for Ground & Home Delivery.

The weight limit is 150 lbs (68 kg).

Oversized packages may incur additional charges and are subject to dimensional weight calculations.

4. DHL Guidelines:

DHL uses boxes that can handle up to 25 kg, with corresponding dimensions. 

For example: 

Box 5 can hold up to 10 kg (33.7 x 32.2 x 34.5 cm) 

Box 6 up to 15 kg (41.7 x 35.9 x 36.9 cm) and 

Box 7 up to 20 kg (48.1 x 40.4 x 38.9 cm).

5. Purolator Guidelines:

Maximum Dimensions and Weight:

Maximum Weight: 150 lbs (68 kg).

Maximum Length: 108 inches (274 cm).

Maximum Combined Length and Girth: 165 inches (419 cm). Girth is calculated as length + 2 x width + 2 x height.

6. Use of Dimensional Weight by Carriers:

Carriers often use dimensional weight to calculate shipping costs for packages that are large and light. 

Carriers calculate the dimensional weight by multiplying the length, width, and height (L x W x H), then dividing by their specific dimensional divisor (e.g., 150 for FedEx and 192 for UPS). 

The dimensional weight is used to calculate the shipping cost if it’s higher than the actual weight. 

5. Special Handling:

Carriers may have special handling fees for oversized or heavy packages. 

These fees may be applied if the length exceeds 108 inches, the girth exceeds 130 inches, or the weight exceeds 75 lbs. 

6. Additional factors:

Always measure from the outside of the box. If you are using a non-standard box, measure from the largest points. 

If you are not sure about the dimensions or weight, it is ideal to contact the carrier for clarification.

Standard Box Sizes and Their Uses

Standard shipping box sizes vary drastically, but common categories are small, medium, and large boxes, each suitable for various types of items.

Common Box Sizes and Uses:

• Small Boxes (e.g., 8 x 6 x 4 inches): Ideal for books, cosmetics, electronics, and other small items. 
• Medium Boxes (e.g., 12 x 9 x 6 inches): Generally, used for clothing, shoes, and electronics. 
• Large Boxes (e.g., 18 x 14 x 12 inches): Suitable for toys, larger electronics, and other heavy items. 
• Very Large Boxes (e.g., 20 x 15 x 15 inches): Ideal for heavier items, bulk orders, and oversized products. 
• Specialty Boxes: Include flat-rate envelopes for mailing, padded envelopes for fragile items, and flat-rate boxes for postal services. Read this for a complete guide on fragile shipping. 
• Oversized Boxes: Used for shipping large, flat items like mirrors or framed photographs. 
• Double-wall boxes: Provide stronger stacking and strength. 

Factors to Consider When Choosing a Box:

Item Type: Consider the size, shape, and fragility of the item. 

Weight: Select a box that can support the item’s weight. 

Protection: Ensure the box provides adequate protection during shipping. 

Shipping Method: Some shipping services have specific box size guidelines. 

Measuring a Box:

Length: The longest side of the shipping box. 

Width: The shorter side of the shipping box. 

Height: The distance from the bottom to the top of the box. 

Girth: Add the width and height, multiplied by two. 

Volume: Length x Width x Height.

Tips for Selecting the Right Box Size

To select the right shipping box size, measure your product accurately, add space for padding, and take into account and check carrier restrictions. A snug fit, with sufficient space for protection, is the key to safe and affordable shipping. 

A more detailed breakdown is below:

1. Measure Your Product:

Correctly measure the length, width, and height of your product.

If you are using any protective materials (e.g., bubble wrap, foam), add 1-2 inches to each dimension to fit them. 

2. Select the Right Size:

A snug fit, with some space for padding, is ideal. 

If the item is fragile, select a box that allows for at least 1-2 inches of padding on all sides. 

Avoid using oversized boxes, as they can lead to higher shipping costs due to dimensional weight. 

3. Consider Carrier Restrictions:

Different shipping carriers have different size and weight restrictions.

Research the carrier’s requirements and avoid unexpected fees or delays. 

4. Pack Carefully:

Use adequate padding to prevent the product from shifting during transit.

Use quality packing materials that can withstand the long journey.

Proper labeling is also crucial. 

5. Calculate Volume (for larger or irregular items):

Multiply length x width x height to get the volume. 

This helps you understand the space your package occupies, which is important for certain carriers and their dimensional weight calculations. 

6. Consider the Shipping Method:

Different shipping methods (e.g., air, ground, international) may have different size and weight restrictions.

Factors like delivery timeframe and destination can also influence box size requirements.

Common Mistakes to Avoid

Here are the common mistakes and how to avoid them:

1. Measuring from the Inside:

Mistake: Measuring the inside dimensions of the box instead of the outside. 

Why it’s wrong: This will result in smaller dimensions than the actual box size, potentially leading to unexpected surcharges from shipping companies. 

How to avoid: Always measure from the outer edges of the box, including any flaps or handles. 

2. Using Inaccurate Measuring Tools:

Mistake: Using a damaged or inaccurate measuring tape.

Why it’s wrong: Inaccurate measurements can lead to issues with shipping, such as the package not fitting properly or getting charged for extra space.

How to avoid: Ensure the measuring tape is in proper condition and measures correctly. 

3. Rounding Measurements:

Mistake: Rounding up or down the measurements to the nearest whole number.

Why it’s wrong: Carriers may consider even small fractions of an inch or centimeter, so accurate measurements are crucial for reducing shipping costs and avoiding surcharges. 

How to avoid: Provide the most accurate measurements possible, including fractions of an inch or centimeter. 

4. Neglecting Outer Dimensions:

Mistake: Not measuring the entire outer dimensions of the box, including any protruding handles or edges.

Why it’s wrong: This can lead to inaccurate shipping costs and unexpected surcharges.

How to avoid: Include all protruding parts in the measurements. 

5. Forgetting to Record Measurements:

Mistake: Not recording and storing the measurements accurately.

Why it’s wrong: You may not be able to retrieve the dimensions when needed, potentially leading to problems with shipping or returns, according to GPC Systems.

How to avoid: Take notes of the measurements and store them safely. 

6. Underestimating Overhang and Packaging:

Mistake: Ignoring the impact of overhang (the space the box goes beyond its base) and the packaging materials added.

Why it’s wrong: This can lead to inaccurate volume calculations, possibly resulting in higher shipping costs.

How to avoid: Consider the impact of overhang and packaging when calculating the final dimensions of the package. 

7. Depending on Manual Tape Measurements:

Mistake: Using a manual tape measure for all measurements, especially when dealing with complex shapes or large packages.

Why it’s wrong: Manual measurements can be time-consuming and prone to human error.

How to avoid: Consider using accurate digital measurement tools to ensure accuracy.

Conclusion

When you try to buy shipping boxes, you don’t have to sweat to find such items. You can search online, choose the right boxes, and order the required number of boxes. The shipping boxes will be delivered to your place in a few days. 

First, however, do some homework and compare prices of different websites before you go ahead and place your order. You would want to save as much as possible through the right deals. This is why it is ideal to compare different shipping box companies and see which one can offer the best price. Before buying, ensure the boxes have the right measurements.

FAQs

Q1. Why is measuring a box accurately important for shipping?

Ans: Accurately measuring a box for shipping is crucial for both cost and product safety. Incorrect measurements can lead to higher shipping costs and damage to the contents during transit. Knowing the precise dimensions ensures you choose the right-sized box, which minimizes movement inside the package, preventing breakage or other damage.

Q2. How do I measure the dimensions of an irregularly shaped package?

Ans: To measure an irregularly shaped package, identify its longest side (length), widest point (width), and highest point (height). Use a tape measure to find the distance at these, and make sure to account for any bulges. If calculating volume, use the CBM (Cubic Meter) method, multiplying length, width, and height.

Q3: Can I use my own boxes, or do carriers require specific packaging?

Ans: You can generally use your own boxes for shipping, but they must meet the carrier’s packaging guidelines. These guidelines mainly focus on the sturdiness of the package, adequate protection, and within size and weight limits.

Q4: How can I reduce shipping costs related to package dimensions?​

Ans: To lower shipping costs related to package dimensions, focus on reducing the size and weight of your packages. Use right-sized packaging, consider options like poly mailers or padded envelopes for non-fragile items, and bundled shipping when possible.

Q5. How does package size impact delivery options and times?

Ans: Larger packages generally affect delivery options and times by leading to higher shipping costs and possibly longer transit times. This is because larger packages require more resources for handling, loading, and transporting, which can affect the efficiency of the shipping process and overall delivery speed.