UPS Maximum Size Limits: A Simple Guide

If you’ve ever wondered how big a parcel you can send with UPS, you’re not alone. UPS has clear limits on length, weight, and overall size, and breaking those rules can mean extra fees or a rejected shipment. Below we break down the main numbers, show you how to measure correctly, and give a few tricks to keep costs low.

Core Size and Weight Rules

For most UPS services in the UK, the biggest package you can ship is 150 lb (≈68 kg). Length cannot exceed 165 in (≈419 cm). If you add length, width, and height together, the total (called the girth) must stay under 165 in as well. In plain English, if your box is long and skinny, it might still be okay as long as the combined measurements don’t pass the 165‑inch limit.

Here’s a quick cheat sheet:

• UPS Ground: Max 150 lb, max 165 in length, max 165 in girth.
• UPS Express (Next Day Air, 2nd Day Air): Same size limits, but weight can be lower for some services (usually 70 lb for Express documents).
• International shipments: Weight still caps at 150 lb, but each destination may have extra rules. Always check the destination country’s customs guidelines.

Measuring Your Package the Right Way

Grab a tape measure and follow these steps:

1. Measure the longest side – that’s your length.
2. Measure the side opposite the length – that’s the width.
3. Measure the tallest side – that’s the height.
4. Calculate girth: 2 × (width + height). Add that to the length and make sure the total stays under 165 in.

If you’re close to the limit, consider re‑packing or using a lighter box. Cardboard can add a few inches, while bubble wrap can add weight. A slimmer, sturdier box often saves money.

What Happens If You Exceed the Limits?

UPS will flag the parcel at the drop‑off point. You’ll be offered two choices: pay an oversize surcharge (which can be $30‑$100 depending on the service) or re‑package the item to fit within limits. For very large items, UPS offers a freight service, but that’s a whole different pricing model.

Pro tip: If your item is just over the 65‑inch length limit but under the 165‑inch girth, try rotating it. Sometimes flipping the package changes which side counts as “length,” keeping you under the limit without extra fees.

Tips to Keep Costs Down

• Use the smallest box that safely holds your goods.
• Weigh the package before you get to the UPS store – a kitchen scale works for small parcels.
• Combine items into one box when possible, but watch the girth.
• Check the UPS online calculator; it tells you instantly if your dimensions trigger a surcharge.
• Consider UPS Ground for heavy, non‑urgent shipments – it’s cheaper than Express and has the same size caps.

Understanding UPS’s maximum size limits saves you time, money, and a lot of frustration. Measure twice, pack smart, and you’ll get your parcel on the road without surprise fees. Need a quick check? Grab a ruler, do the simple math above, and you’re good to go.