Free UK Parcel Size Checker – Check Royal Mail, Evri & Yodel Parcel Limits
Whether you’re selling on eBay, Amazon, Vinted, Etsy or Facebook Marketplace, choosing the right parcel size can save you money and help avoid delays. Sending a parcel that’s too large or too heavy for your chosen service could mean paying higher postage costs or having your parcel rejected.
Our free UK Parcel Size Checker helps you quickly check whether your packed parcel meets the size and weight limits for popular UK delivery services, including Royal Mail, Evri and Yodel. Simply enter your parcel’s dimensions and weight, select your delivery service, and instantly see whether your parcel qualifies.
Designed for UK resellers, online sellers and small businesses, this tool helps you choose the right shipping service with confidence and reduce unnecessary postage costs.
Parcel Size Checker
Check whether your packed parcel fits the size and weight limits for popular UK delivery services.
Select the carrier you plan to use.
Choose the parcel format or delivery service.
Include all packaging and protective materials.
Choose a carrier and service, then enter your packed parcel dimensions and weight.
Enter your parcel measurements.
The second-longest side will be checked here.
The shortest side will be checked here.
The packaged weight will be checked here.
This service uses a combined measurement limit.
Example: a 60 × 40 × 30cm parcel has a combined measurement of 60 + 80 + 60 = 200cm.
How to Use the Parcel Size Checker
Checking your parcel takes less than a minute.
The calculator will instantly tell you whether your parcel fits the selected service and highlight any size or weight limits that have been exceeded.
Why Parcel Size Matters
Shipping costs can quickly eat into your profits if you choose the wrong parcel size.
Using the correct parcel category helps you:
For resellers who post items every day, even saving a small amount on each parcel can make a noticeable difference over the course of a year.
Avoiding these mistakes can protect your profit margins.
1. Measuring the item instead of the packaged parcel
Always measure the parcel after it has been packed. Bubble wrap, cardboard boxes and protective packaging all increase the final dimensions.
2. Forgetting to include packaging weight
Carrier limits apply to the complete parcel, not just the item being sold.
Always weigh the finished parcel before purchasing postage.
3. Assuming all carriers use the same size limits
Royal Mail, Evri and Yodel all have different parcel categories and maximum dimensions.
Choosing the wrong service can increase shipping costs unnecessarily.
4. Ignoring length plus girth limits
Some courier services don’t just check the longest side—they also use a combined Length + Girth measurement.
Large but lightweight parcels can exceed this limit even when individual dimensions appear acceptable.
5. Choosing a larger parcel service than necessary
Many sellers automatically select a larger parcel category “just to be safe.”
Over time, paying for larger services than required can significantly reduce your overall profit.
Worked Example
Imagine you’re shipping a boxed video game console.
| Measurement | Value |
|---|---|
| Length | 42 cm |
| Width | 28 cm |
| Height | 14 cm |
| Weight | 1.8 kg |
You choose:
The Parcel Size Checker confirms:
✅ Fits within the size limits.
✅ Weight is below the maximum allowance.
✅ Suitable for the selected parcel category.
You can confidently purchase the correct postage without worrying about unexpected surcharges.
✅ SellerStack Shipping Checklist
Decision Rule: Always measure and weigh the completed parcel—not just the product—to avoid paying more than necessary.
Before buying postage, check:
✅ Have I measured the finished parcel?
✅ Have I included all packaging materials?
✅ Is the weight accurate?
✅ Am I using the correct carrier?
✅ Have I selected the most suitable parcel service?
✅ Will a smaller parcel category save money?
📦 SellerStack Shipping Toolkit
Now that you know your parcel size, use these tools to compare courier costs, prepare professional shipping labels and protect every order during delivery.
🚚 Shipping Cost Comparison
Compare Royal Mail, Evri, DPD and another courier using your latest quotes and complete fulfilment costs.
- Compare multiple courier options
- Include packaging and handling costs
- Receive a personalised shipping verdict
🖨️ Thermal Label Printer
Print clear 4 × 6-inch courier labels quickly without paying for ink or toner cartridges.
- Works with major UK couriers
- Speeds up order dispatch
- Ideal for regular online sellers
📦 Shipping Supplies
Protect products with suitable mailing bags, boxes, packing tape and protective materials.
- Mailing bags and cardboard boxes
- Bubble wrap and protective fill
- Labels, tape and packing accessories
Continue Building Your SellerStack Toolbox
Explore more free calculators and practical resources designed to help UK resellers source smarter, price accurately and ship with confidence.
Some links are affiliate links. SellerStack may earn a small commission at no additional cost to you.
Frequently Asked Questions
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SellerStack Verdict
Buy Smarter. Sell Smarter. Grow Smarter.
Choosing the right parcel size isn’t just about meeting courier limits—it’s about protecting your profit on every order.
An oversized parcel can increase your shipping costs, while incorrect dimensions may lead to surcharges, delays or rejected shipments. By measuring your packaged item accurately and checking it against your chosen courier’s size limits before purchasing postage, you can ship with confidence, reduce unnecessary costs and provide a better experience for your customers.
Whether you sell on eBay, Amazon, Etsy, Vinted, Depop or Shopify, taking a few moments to check your parcel size can save money on every shipment. Over hundreds of orders, those small savings can make a meaningful difference to your overall profitability.
Need a More Detailed Marketplace Calculation?
Use the dedicated SellerStack marketplace calculators when you need platform-specific fee settings, deeper profit analysis and more accurate selling-cost estimates.
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