Measuring your package correctly ensures accurate shipping costs, prevents unexpected surcharges, and guarantees a smoother shipping process. Here’s a detailed guide to help you measure your package like a pro.
What you'll need
- Measuring Tape or Ruler: For accurate measurements.
- Scale: To weigh the package.
- Pen and Paper: To record the dimensions (or use a notes app).
- Calculator: If you need to determine dimensional weight.
The key dimensions to measure
Shipping carriers require three essential dimensions for each package:
- Length: The longest side of the package.
- Width: The shorter side of the package base.
- Height: The distance from the base to the top of the package.
These measurements should be recorded as Length x Width x Height (L x W x H).
How to measure a package
Step 1: Place the package on a flat surface. Ensure the package is sealed and packed as it will be shipped.
Step 2: Measure the length
- Use a measuring tape or ruler to find the longest side of the package.
- Include protruding edges, bulges, or irregularities.
- Record the measurement as the Length.
Step 3: Measure the width. Measure the shorter side of the base. Again, include any bulging parts or edges.
Step 4: Measure the height. Measure from the base of the package to the highest point, including any irregularities like a rounded top.
Step 5: Round up. Round each dimension to the nearest whole number (inch or centimeter). For instance: A package 9.25 inches wide should be rounded up to 10 inches.
Measuring the weight of the package
Place the package on a scale to determine its weight. Round up to the nearest whole pound or kilogram as required by the carrier. If the package is large but light, you may also need to calculate its dimensional weight (explained below).
Dimensional Weight (DIM Weight)
Some carriers use dimensional weight (DIM weight) to calculate shipping costs for bulky but lightweight packages. DIM weight reflects the space the package occupies in a delivery vehicle.
DIM Weight Formula:
- The DIM Factor varies by carrier (e.g., 139 for FedEx/UPS in the U.S.).
- Compare DIM weight to the actual weight. Most carriers charge based on the greater of the two.
READ MORE ON: How to Calculate Dimensional Weight for Your Package
Make sure to double-check!
Verify all measurements, especially after sealing or adding padding. If you make any last-minute adjustments to packaging, remeasure and reweigh the package.
Do's and don'ts
Don't: Just measure outer dimensions. Always measure the outermost edges of your package, including tape, flaps, or bulges.
Don't: Reinforce fragile packages. If your package requires extra padding or reinforcements, measure it after packing to account for added size.
Don't: Overlook large packages, be aware that carriers may impose additional charges.
Do: Check carrier requirements. Each carrier may have specific guidelines for package size limits and dimensional weight calculations.
At Impack, we offer a variety of flat and padded mailers to fit all your shipping needs.
What Fits in Our Mailers?
- 6" x 9": Stickers, postcards, jewelry, small accessories, or other non-fragile items.
- 10" x 13": T-shirts, artisanal crafts, calendars, paperback books.
- 12" x 15.5": Magazines, folded dresses, multiple smaller cloth items, thicker books.
- 14.5" x 19": Sweaters, art prints, larger clothing pieces, multiple books, or home decor items.
- 19" x 24": Posters, blankets, large fabrics, shoe boxes or multiple-item orders.
- 6" x 9": Jewelry, phone cases, small cosmetics.
- 8.5" x 12": Skincare, accessories, small books, or other fragile paper goods.
Complete your packaging with our glassine bags, paper tapes, and custom stickers—designed to protect your products and make your brand stand out. Ship smart and stylish with Impack!
