Stowage Tools: free logistics calculators

Inside dimensions, door openings, volume, tare and payload for 10 container types, from the 20' dry box to the 40' flat rack.

Count how many cartons of one size fit in a container, layer by layer, with a stacking limit and the payload cap.

Compare how many 20' GP, 40' GP and 40' HC boxes your volume and weight need, and find the cheapest combination.

Check whether a container number is valid under ISO 6346 and work out the check digit from the first 10 characters.

Turn the 4-character size-type code on a container door into its length, height, width and container type.

Add up cargo, packing, dunnage, securing and container tare into a printable VGM method 2 worksheet.

Work out the net volume of a 20 or 40 ft reefer below the red load line, upright carton count and typical carriage temperatures.

Check whether cargo plus packing stays within the container payload, how much capacity is left and the load per metre of floor.

Count how many drums or bags fit in a container or truck, with square or staggered rows, tiers and the payload limit.

Type the first 4 letters or a full container number to see the shipping line behind the prefix (BIC owner code), the equipment category and the ISO 6346 check digit.

Work out cartons and pallets in cubic metres and cubic feet, with the share of a 20' and 40' container they fill.

Work out how many pallets fit on a container floor, how many tiers if they stack, and whether the payload allows it.

Work out cartons per layer, number of layers, total height and gross weight of one pallet, with overhang and load limit.

Convert inches, feet, pounds, long tons, cubic feet and gallons to metric and back, using exact definitions.

Create an export carton shipping mark with carton numbers, weights, size and handling symbols, ready to download and print.

Check whether your lashings hold the cargo against sideways sliding, using the CSS Code rule of thumb and force balance.

Estimate box compression strength (BCT) from board ECT and caliper, and how many boxes can safely sit on top.

Compare carton patterns on a pallet: strong column stacking, or interlocked and pinwheel layers that fit more per layer.

Enter volume, weight and the longest piece to find the smallest truck that carries it, from pick-up to 40 ft trailer.

Pre-check whether your truck is overloaded against its JBB or exceeds the legal width, height and length limits.

Work out the loading metres of pallets and goods on a 13.6 m trailer, with stacking, share of deck length and LDM weight.

Work out front and rear axle loads from where the cargo sits on the deck, plus the safe window for its centre of gravity.

Estimate the cost of a CDE, CDD, Fuso, tronton, wingbox or trailer trip: fuel, tolls, crew allowance, vehicle cost and margin, down to cost per km and per tonne.

Compare actual and volumetric weight for air cargo, courier and sea LCL, and see the weight you will be charged for.

Count how many cartons fit in an air cargo ULD such as AKE/LD3, AKH, PMC or PAG, with payload and volumetric weight.

Estimate the pallet positions of a warehouse with selective racking from floor size, clear height, aisle width and pallet size.

Work out storage cost per pallet per day or month, per m² or per m³, plus handling in/out, admin, value-added services and minimum charges.

Compare LCL cost per revenue ton with a full 20GP, 40GP or 40HC container, including the break-even volume.

Work out customs value (CIF × tax rate), import duty, VAT, luxury tax, PPh 22 and local costs down to the landed cost per unit. Every rate is editable.

Convert an FOB price into CFR and CIF, or back again, with freight and an insurance premium on 110% of CIF worked out correctly.

Count the chargeable days after free time and total demurrage, detention or combined charges with tiered rates per container.

This week's Ministry of Finance tax exchange rates for every listed currency, with conversion to rupiah and between currencies.

Add up freight, local charges, duties, trucking and insurance, then split them over each SKU by value, weight, volume or quantity.

Work out the 110% CIF insured value, the cargo insurance premium, the minimum premium and policy fees from a CIF, CFR or FOB value.

Cost and risk matrix for the 11 Incoterms 2020 rules (EXW to DDP), details per term, and a chooser based on how you actually ship.

Indonesian export and import documents (NIB, PEB/PIB, NPE, certificate of origin, B/L, quarantine, restrictions) for your goods and mode, to tick off and print.

Create an export packing list with total packages, net weight, gross weight and CBM, then download it as Excel or print it to PDF.

Build an export commercial invoice with Incoterms, HS codes, automatic totals and the amount in words, then download Excel or print to PDF.

Estimate L/C costs for importer and exporter: issuance, amendments, usance acceptance, advising, confirmation, negotiation and discrepancies.

Count back from the vessel ETD: when to book, pick up the empty, stuff, clear customs, send the shipping instruction, file the VGM and meet CY closing.

Build an export price from unit cost, packing and margin up to EXW, FCA, FOB, CFR and CIF prices per unit in rupiah and foreign currency.

Check whether your wooden pallets, crates or dunnage fall under ISPM 15, which treatments are accepted and whether the mark is complete.

Work out stowage factor, the hold space needed including broken stowage, and whether a ship fills up by volume or by weight.

Find ports, airports and terminals worldwide by name or UN/LOCODE, with the location functions and coordinates.

Estimate the sea distance between two ports in nautical miles and kilometres, then the voyage time from vessel speed and port days.

Work out voyage bunker consumption and cost from distance, speed, engine consumption, port days and VLSFO and MGO prices.

Work out freight revenue, bunker and port costs, voyage days and the time charter equivalent (TCE) per day for one voyage.

Work out quarter-mean draft, first and second trim corrections, density correction, net displacement and cargo weight from initial and final surveys.

Estimate CO₂e emissions per sea, road, rail and air leg from cargo weight, distance and emission factors per tonne-km.

Learn the 9 dangerous goods classes with their divisions, labels and UN number examples, then understand the four segregation levels and how planners apply them.

Turn a mix of 20', 40', 40'HC and 45' boxes into TEU and FEU, TEU-per-box ratio, capacity utilisation and homogeneous capacity at 14 t.

Estimate displacement, deadweight, TPC, hold volume and TEU capacity from length, beam, depth, draft and the block coefficient.

Generic size classes of container ships, bulkers, tankers, general cargo ships, 180–330 ft barges and LCTs: DWT/TEU, length, beam, draft and use.

Work out the new forward and aft drafts after loading, discharging or shifting weights, from your ship’s TPC, MTC and LCF.

Work out the new KG, solid GM and free-surface-corrected GM after loading, discharging or shifting weights, plus list angle and roll period.

Estimate displacement, DWT, clear deck area, average deck load and bulk cargo (coal, nickel ore) from barge dimensions and stowage factor.

Work out the bearing pressure of heavy cargo on a ship or barge deck in t/m² and kPa, the effect of timber dunnage and spreader beams, and the area needed.

Drag up to 15 pieces on the deck plan of a 300 ft demo barge and see zone loads, centre of gravity, drafts, trim and heel straight from the stability engine.

Compare the hook load (cargo + rigging + hook block × DAF) with the SWL at radius from a ship or shore crane load chart, and find the maximum radius.

Combine the weights and centres of gravity of several components into one CoG (X, Y, Z), with moments and the load split between two lifting points.

Estimate transverse, longitudinal and vertical forces on cargo on a barge or ship from roll, pitch and heave, then check sliding, tipping and lashing count.

Stow containers in one bay (rows × tiers), check stack weights, discharge port order (overstows), heavy over light, VCG and port/starboard balance.

Open a BAPLIE 2.x or 3.x file and see the bay plan bay by bay, totals per POD, DG, reefers and validation findings. Parsed in your browser.

Look up a UN number by digits or name (English/Indonesian): proper shipping name, class or division, subsidiary hazard and packing group for common entries.

Understand the nine DG classes and the four segregation levels on board — from "away from" to longitudinal separation by a whole hold — with interactive diagrams.