Stop shipping air.Pack smarter.
Calculate the exact box for every order before it ships. Charge accurate shipping, reduce dimensional weight, and eliminate wasted space.
Optimal Recommendation: Medium box
Shipping Savings: $4.22
Dimensions: 10.0 x 10.0 x 10.0 in
10 units
Shipping costs shouldn't be a guessing game.
- error
Undercharge Customers
Lose margin on every order when estimated shipping doesn't cover dimensional weight charges.
- error
Oversized Boxes
Pay to ship empty space. Every cubic inch of void fill is money wasted on air.
- error
Inconsistent Packing
Unpredictable costs when every warehouse worker picks a different box for the same order.
Size correction increased postage
Lost Margin
$7.35
A Typical Shipping Scenario
Why shipping quotes don't match what you're actually charged
Example order
Backpack + Mug + Notebook
Denver New York
Backpack
Weight
1 lb.
Dimensions
13 x 8 x 14 in
Mug
Weight
2.33 lbs.
Dimensions
5.4 x 5.4 x 6.1 in
Notebook
Weight
0.63 lbs.
Dimensions
5 x 8 x 0.5 in
Checkout quote
Based on real weight of products
UPS Ground
$23.63
Carrier invoice
Based on real and volumetric weight
UPS Ground
$53.28
Loss on one order: $29.65
Loss on 100 orders: ~$3,000
Loss on 3,000 orders: ~$89,000
Packwell automatically selects the right box from available packaging options based on product dimensions, so your checkout shipping price matches what the carrier will charge.
What you get for every shipment
Turn item dimensions, weights, available boxes, and packing rules into the outputs your team needs: the recommended box, accurate carrier quote inputs, and a clear 3D packing plan.
Recommended box
Match each shipment to the best available box using item dimensions, weight, quantity, available packaging, and packing rules.
Accurate carrier quotes
Use the recommended box, actual weight, and dimensional weight to calculate shipping cost before the order ships.
3D packing plan
Give your team a visual packing layout showing how items should fit inside the selected box.
UI and API access
Run calculations in the Packwell web app or connect the API to checkout, order management, warehouse, or shipping workflows.
Packwell calculation
How Packwell works
Use the Packwell UI or REST API to integrate precise box selection and packing instructions into your existing business process.
Step 1
Define your packaging options
Add the boxes you use for shipping, or let Packwell calculate the ideal box size automatically.
Step 2
Provide shipment details
Send the items to be shipped, including dimensions, weight, and quantity. Optionally define packing rules like stacking or orientation.
Step 3
Packwell calculates the best box
Packwell uses a 3D Bin Packing Algorithm to select the best box for shipping the items and minimize dimensional weight and wasted space.
Step 4
Calculate real shipping cost
Use actual weight and dimensional weight to get accurate shipping rates from your carrier. No more undercharging or surprise costs.
Step 5
Pack exactly as planned
Follow the packing plan visualization to ensure orders are packed consistently and match what was quoted.
Run a sample order through Packwell in the interactive demo.
Built for teams that ship complex orders
Ecommerce Brands
Show accurate shipping at checkout. Stop eating margin on every order.
Promotional & Gifting
Complex kits with mixed items. Optimize box selection across warehouse distributions.
3PL Warehouses
Standardize packing decisions across shifts and locations. Consistent box selection every time.
Subscription Brands
Design packaging around your recurring SKU mix. Optimize box inventory for predictable orders.
Simple pricing that scales with your usage
Choose a plan that fits your packing volume today, then unlock automation and analytics as your operation expands.
Starter
For small teams validating pack-rate improvements.
- checkup to 50 packing plans/mo
- checkREST API access
- check3D visualization
Growth
For teams automating box choice across daily operations.
- checkup to 500 packing plans/mo
- checkREST API access
- check3D visualization
- checkemail support
Pro
For high-volume ops teams optimizing cost by lane, box type, and SLA.
- checkup to 2,000 packing plans/mo
- checkREST API access
- check3D visualization
- checkpriority support
Scale
For enterprise teams needing tailored rollout, governance, and long-term support.
- checkUnlimited usage
- checkSLA
- checkCustom integrations
Start packing smarter today.
Every mismatched box is money lost on dimensional weight charges and wasted packaging. Packwell picks the right carton for every order automatically.
Medium (14×10×8)
Calculated instantly