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How to calculate a parcels girth

Parcelpal’s guide to calculating parcel girth 

What is a parcels girth?  

Parcel girth, sometimes called ‘Max Girth’ on courier sites, is the length of the thickest part of the parcel. This thickest part is perpendicular to the parcel length.  

Why is it important?  

Many of the couriers that we partner with have services with certain restrictions on the maximum combined length and girth of the parcel allowed. Couriers have these restrictions in place to ensure that once the parcel arrives in their system it fits on their conveyor belts and is also suitable size for their delivery vehicles. Some couriers choose to use this system to protect and prepare their staff when handling large and heavy parcels. 

How do I calculate it?  

1. Measure the parcels length, width, and height and note these down. If you are unsure of where these measurements are, see the graphic above.  


2. Now look at your measurements. Which 2 are smallest? Add the two smallest measurements together. Then multiply this number by 2. This is your girth.  


3. The longest measurement that you did not add together is now added to the girth number. This result is the girth weight of your parcel.  


An example 

The parcel measurements are: Length= 60cm Width= 50cm Height= 40cm  

50cm+40cm= 90cm (add the smallest together) 

90cm x2 = 140cm (multiply the previous result by 2) 

60cm + 140cm = 200cm (add the previous result to the longest measurement from before that you did not use) 

The parcels total girth is 200cm. 

What if I‘m still unsure? 

If you are unsure if your calculations are correct, do not worry! Our friendly customer care team is on hand to help you every step of the way. Just give us a call once you have done your measurements and a member of our team will be happy to help you.