Measure the packed parcel
Use the outside dimensions after packing. A little extra space can change the result.
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Ship smarter.
Know the numbers.
Plan a parcel, check what fits, and see the money left in an order — with practical calculators made for independent online sellers.
✓ Metric and imperial units✓ Your entries stay on your device✓ Instant estimates
Start calculating ↓THE SELLER TOOLKIT
Plan it before you ship.
Volumetric & chargeable weight
Compare parcel size-based weight with its scale weight.
Volumetric weight1.80 kg
Estimated chargeable weight2.00 kg
Parcel volume0.0090 m³
Based on the inputs and selected divisor. Carrier rounding and minimum billable weights may differ.
How many products fit in this carton?
Find the best simple grid arrangement across six item orientations.
Grid-fit estimate75 items
A simple estimate for identical, box-shaped items. Leave space for protection.
This is a simple estimate. It assumes identical box-shaped items. It does not include protective packing. Try one real carton before shipping.
Order profit & margin
See what may be left after the costs you enter.
Estimated profit per order$12.50
Profit margin35.7%
Platform fee estimate$3.50
Enter all costs in the currency you select. This estimate does not include costs you leave out, such as tax, returns, ads, or labor.
A QUICK GUIDE
Small details can
change shipping cost.
Many parcel services compare actual weight with a size-based weight. For light, bulky packages, dimensions can matter more than the number on a scale.
Read the dimensional weight guide ↗Use the carrier's divisor
Divisors vary by carrier, service, route, and date. Check the rate rules for your shipment.
Compare the full order
Shipping and platform fees can change your margin. Keep your estimates beside your selling price.
FAQ
Useful answers for
busy sellers.
What is chargeable weight?+
It is the weight a carrier uses to price a shipment under its rules. A service may compare actual weight with volumetric weight and use the greater figure, then apply its rounding or minimums. Always check the carrier's current service guide.
Which DIM divisor should I use?+
There is no universal divisor. It depends on the carrier and service. This tool starts with 5,000 as an example for metric dimensions; replace it with the divisor shown by your carrier.
Does the carton fit result guarantee everything will fit?+
No. It checks simple rectangular grid orientations. It cannot model irregular shapes, protective packaging, fragile goods, compression, or safe stacking. Test-pack before choosing a carton.
Does the order profit include tax or marketplace rules?+
No. It estimates the costs you enter and calculates a percentage fee from the selling price. Tax, refunds, ad spend, currency conversion, and platform-specific fee rules are not included unless you add them as other costs.
Are my numbers stored or uploaded?+
The calculator runs in your browser and does not submit its input values to this site. Your browser or hosting provider may still process basic technical data when loading the page. See the privacy and cookie pages for details.
Can I use these estimates for a customs declaration or carrier invoice?+
No. Use the carrier's own tools and documents for a shipment quote, label, customs filing, or invoice. These calculators are for planning and may not reflect a carrier's latest rules.
MORE TO EXPLORE
Plan with a little more clarity.
Practical notes on parcel measurements, dimensional weight, and small-shop shipping.