FreightKit

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.

Calculate dimensional weight Browse all 20 tools
No sign-upRuns in your browserClear formulas
DIM WEIGHTMETRIC · ÷5000
40 × 30 × 25÷ 5,000
Chargeable weight6.00 kg
20focused calculators
25practical guides
0accounts required

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.

01

Parcel

Dimensional Weight

Compare actual and dimensional weight with carrier presets, quantity, and chargeable-weight rounding.

kg · lb
02

Freight

CBM & Volume

Calculate shipment volume in cubic metres, cubic feet, and litres across common units.

m³ · ft³
03

Packing

Carton Fit

Find the best right-angle orientation for fitting identical items inside a master carton.

6 rotations
04

Warehouse

Pallet Load

Compare standard pallet presets, carton orientation, layers, finished height, load weight, and footprint use.

layers · weight
05

Freight

Container Loading

Estimate axis-aligned carton capacity for 20ft, 40ft, and 40ft high-cube containers.

20ft · 40ft · HC
06

Parcel

Length + Girth

Calculate package length plus girth and compare it with a limit from your carrier.

carrier limits
07

Utility

Unit Converter

Convert the length, mass, and volume units used across international shipping documents.

length · mass · volume
08

Packaging

Box Cost Estimate

Estimate RSC corrugated blank area, material usage, waste, and a batch material cost.

RSC estimate
09

Parcel

Shipping Cost

Estimate a parcel charge from billable weight, per-kilo rate, fuel surcharge, and handling.

rate + surcharge
10

Commerce

Ecommerce Margin

See profit, margin, fees, return on cost, and break-even price for an ecommerce order.

profit · break-even
11

Freight

Freight Density

Calculate shipment density from outside dimensions, quantity, and total gross weight.

kg/m³ · lb/ft³
12

Air freight

Air Chargeable Weight

Compare gross and volumetric weight for a multi-piece air freight shipment.

gross vs volume
13

Ocean freight

LCL W/M Charge

Calculate CBM and tonnes across multiple cargo lines, apply minimum W/M, and separate variable and fixed LCL charges.

CBM · metric tonne
14

Road freight

Load Metres

Convert shipment floor area into load metres for a standard-width trailer estimate.

LDM · floor space
15

Commerce

Landed Cost

Estimate total and per-unit landed cost from goods, freight, duty, tax, and clearance fees.

duty · tax · freight
16

Inventory

Reorder Point

Estimate the stock level that should trigger a replenishment order.

demand · lead time
17

Inventory

EOQ

Balance annual ordering and holding costs with the classic EOQ model.

order vs holding cost
18

Warehouse

Storage Cost

Estimate storage, inbound, outbound, and administration costs for a palletised shipment.

pallet · handling
19

Warehouse

Pallet Stack Height

Calculate finished pallet height, cartons per layer, total cartons, and remaining height clearance.

layers · clearance
20

Packaging

Packaging Waste

Measure material loss, usable yield, and waste cost for a packaging production run.

yield · material loss

From answer to action

Use the number.
Know its limits.

Original working guides connect each formula to measurements, quote checks, warehouse trials, and decisions.

Parcel · 8 min

Dimensional-weight divisors for FedEx, UPS, DHL, and USPS

Compare common parcel DIM factors without treating a public rule as a substitute for your service contract.

Warehouse · 8 min

Standard pallet sizes and carton-fit examples

Compare Euro, industrial, GMA, and half-pallet footprints before fixing a carton or layer pattern.

Ocean freight · 8 min

How to calculate LCL W/M for multiple cartons, crates, and pallets

Build cargo lines, total CBM and gross weight once, and apply weight or measure without double-counting quantity.

Ocean freight · 8 min

LCL minimum charges and local fees: build an all-in estimate

Separate W/M charges from shipment-level fees so a small LCL quote does not look cheaper than its invoice.

Browse all 25 guides ↗

Three complete topic hubs

From a question
to a defensible answer.

Short, citation-ready answers connect the formula, a worked example, primary references, the live calculator, and the longer operating guides.

Parcel shipping

Dimensional Weight: Formula, Divisors & Worked Examples

A practical reference for DIM weight, chargeable weight, carrier divisors, measurement rules, rounding, and multi-parcel examples.

Open topic reference ↗Warehouse planning

Pallet Loading: Cartons per Layer, Height & Weight Limits

Plan a transparent pallet load using pallet footprint, carton rotation, full layers, total height, cargo weight, and operational limits.

Open topic reference ↗Ocean freight

LCL Weight or Measure: CBM, Revenue Tons & Local Fees

Calculate LCL weight or measure across cartons, crates, and pallets, then turn a base W/M rate into an all-in quote comparison.

Open topic reference ↗

More tools from the same maker

Need to calculate the tax side too?

TaxMathKit provides transparent calculators for federal income, 1099 work, sales tax, reverse tax, capital gains, and VAT.

Explore TaxMathKit

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.

$19one-time · no subscriptionSee what's included ↗

Why FreightKit

Fast enough for a call.
Clear enough for a quote.

  1. 01
    Enter the known numbers

    Use your carton, pallet, carrier, and cost inputs.

  2. 02
    See the working

    We show the formula and assumptions behind the estimate.

  3. 03
    Copy the result

    Drop a clean summary into your quote, email, or worksheet.