Free packaging & freight calculators
Packaging math,
without the spreadsheet.
Twenty practical calculators for ecommerce, warehouse, and freight teams. Check dimensional weight, carton fit, pallet loads, shipping cost, and margin—in seconds.
Built for quick estimates before you quote, pack, or ship.
The working set
Pick a calculation.
Get a useful answer.
Every tool includes the formula, assumptions, and a copyable result. No hidden spreadsheet logic.
Parcel
Dimensional Weight
Compare actual and volumetric weight to estimate the chargeable weight of a parcel.
Freight
CBM & Volume
Calculate shipment volume in cubic metres, cubic feet, and litres across common units.
Packing
Carton Fit
Find the best right-angle orientation for fitting identical items inside a master carton.
Warehouse
Pallet Load
Estimate cartons per layer, stack height, weight limit, and total cartons on a pallet.
Freight
Container Loading
Estimate axis-aligned carton capacity for 20ft, 40ft, and 40ft high-cube containers.
Parcel
Length + Girth
Calculate package length plus girth and compare it with a limit from your carrier.
Utility
Unit Converter
Convert the length, mass, and volume units used across international shipping documents.
Packaging
Box Cost Estimate
Estimate RSC corrugated blank area, material usage, waste, and a batch material cost.
Parcel
Shipping Cost
Estimate a parcel charge from billable weight, per-kilo rate, fuel surcharge, and handling.
Commerce
Ecommerce Margin
See profit, margin, fees, return on cost, and break-even price for an ecommerce order.
Freight
Freight Density
Calculate shipment density from outside dimensions, quantity, and total gross weight.
Air freight
Air Chargeable Weight
Compare gross and volumetric weight for a multi-piece air freight shipment.
Ocean freight
LCL W/M Charge
Estimate LCL weight-or-measure units and combine them with your quoted freight and fixed fees.
Road freight
Load Metres
Convert shipment floor area into load metres for a standard-width trailer estimate.
Commerce
Landed Cost
Estimate total and per-unit landed cost from goods, freight, duty, tax, and clearance fees.
Inventory
Reorder Point
Estimate the stock level that should trigger a replenishment order.
Inventory
EOQ
Balance annual ordering and holding costs with the classic EOQ model.
Warehouse
Storage Cost
Estimate storage, inbound, outbound, and administration costs for a palletised shipment.
Warehouse
Pallet Stack Height
Calculate finished pallet height, cartons per layer, total cartons, and remaining height clearance.
Packaging
Packaging Waste
Measure material loss, usable yield, and waste cost for a packaging production run.
From answer to action
Use the number.
Know its limits.
Original working guides connect each formula to measurements, quote checks, warehouse trials, and decisions.
A practical dimensional-weight packaging audit
Find cartons that are quietly increasing parcel charges, then test changes without weakening the pack.
Freight · 6 minHow to calculate CBM for a freight quote
Turn carton or crate dimensions into a defensible total-volume figure for air, ocean, and road quotes.
Warehouse · 8 minBuild a pallet loading plan before the warehouse starts
Estimate layers, height, weight, and carton count while keeping the safety checks visible.
Packaging · 7 minChoose a master carton size with fewer guesses
Move from product dimensions to a testable carton specification and avoid paying for unused cube.
FreightKit Operations Workbook
Keep the free tools.
Buy the repeatable workflow.
Batch DIM checks, freight quotes, pallet plans, landed cost, and ecommerce margin—connected in one editable Excel workbook.
Why FreightKit
Fast enough for a call.
Clear enough for a quote.
- 01Enter the known numbers
Use your carton, pallet, carrier, and cost inputs.
- 02See the working
We show the formula and assumptions behind the estimate.
- 03Copy the result
Drop a clean summary into your quote, email, or worksheet.