FREE CALCULATORS
Packaging math, worked out for you.
Builders, checkers, pickers, and calculators for the decisions that shape packaging — dimensional weight, freight class, pallet fit, box strength, case and label sizing, symptom diagnosis, FBA prep, label and print method, RFQs, timelines, co-packer fit, and EPR screening. No sign-up, and the method is shown on every one. Prefer to just get a price? Start a Quick Quote.
Ship it — freight & logistics
Size the case, check the strength, build the pallet, and price the freight. These five chain together — send your numbers straight from one to the next.
Case size calculator
Turn product dimensions and a pack arrangement into internal and external case dimensions.
Open calculator → STEP 2 · STRENGTHBox compression (BCT) calculator
Estimate box compression strength from ECT and box size with the McKee formula, plus a safe stack load.
Open calculator → STEP 3 · PALLETPallet (Ti-Hi) calculator
Estimate cases per layer, layers high, and total cases per pallet from case and pallet size.
Open calculator → STEP 4 · PARCELDimensional weight calculator
Get billable weight from box size and a DIM divisor — the greater of actual and dimensional.
Open calculator → STEP 4 · LTLFreight class calculator
Turn LTL dimensions and weight into density and its NMFC freight class, 50 to 500.
Open calculator → LOGISTICSCandle melt-risk planner
Wax type, expected temp, and transit days in; a melt-risk read and how to protect candles shipped in summer.
Open planner → COLD CHAINGel packs vs dry ice calculator
Box, insulation, temperatures and transit hours in; pounds of dry ice or a gel-pack count from real heat-leak math.
Open calculator → CARTON MARKSShipping mark template
Shipment details in; the standard export carton markings — main mark, case X of Y, gross/net weight, country of origin, handling.
Open builder → TRANSIT TESTWhich ISTA test do I need?
Channel and weight in; the ISTA procedure that fits (3A, 3B, 6-Amazon) and what its drop/vibration/compression sequence does.
Open selector → FRAGILEGlass jar shipping calculator
Jar size and count in; a partition grid, cushion, double-box outer size, and the dimensional weight you’ll be billed for.
Open calculator → LOGISTICSCorrugated box weight calculator
Box size and board grade in; per-box and per-pallet weight from real blank area × combined-board grammage — not a fake divisor.
Open calculator → BOARD GRADEECT to Mullen conversion
Pick a Mullen burst grade or ECT value; see the equivalent, plus what each spec protects against and when to use it.
Open calculator →Size it — dimensions & spec sheets
Get the geometry right, then hand a converter-ready spec to your supplier.
Label size calculator
Fit a label to any bottle or jar — full wrap, front-and-back, or front-only — with the real circumference math.
Open calculator → SPECSpec sheet builder
A converter-ready sheet that builds itself — with live smart checks, pallet math, print/PDF, and an instant-quote handoff.
Open builder → SIZINGShrink sleeve size calculator
Container diameters and height in; layflat width, cut height, and whether your film shrinks enough to grip.
Open calculator → SIZINGGusset volume calculator
Pouch width, height, and gusset depth in; estimated fill volume and weight for your product density.
Open calculator → SIZINGPouch size calculator
Product and fill weight in; the fill volume and a recommended stand-up pouch size — driven by published bulk densities.
Open calculator → SIZINGOxygen absorber calculator
Bag size and fill level in; residual air, oxygen to remove, and the recommended absorber cc rating.
Open calculator → LABELSSoap band label size
Soap bar dimensions in; the belly-band length (girth + overlap) and band height to print, so the wrap fits the first time.
Open calculator →Decide it — pickers & diagnostics
Answer a few questions; get a recommendation you can defend, or diagnose what went wrong.
Label format picker
Answer four questions; get a recommended decoration method — PS label, sleeve, direct, or in-mold — with the trade-off.
Open picker → DECISIONSPrint method selector
Format, run, versions, and color in; a recommended printing method out — flexo, digital, gravure, offset, or screen/pad.
Open selector → TROUBLESHOOTINGPackaging symptom checker
Pick a format and symptom to get the likely causes, the fixes, and whether it's your spec or your supplier's.
Open checker → DECISIONSLamination finish picker
Four questions in; a recommended finish — gloss, matte, soft-touch, or matte + spot UV — with the trade-off.
Open picker → DECISIONSRigid box vs folding carton
Enter a box size and see the freight-cube difference — a folding carton ships flat, a rigid box ships assembled.
Open calculator → BARCODESBarcode color contrast checker
Bar and background colors in; whether it will scan — the real red-light rule (red/orange/yellow bars fail, dark backgrounds fail).
Open checker →Source it — buying & suppliers
Write the RFQ, plan the timeline backward from launch, and vet the co-packer.
Packaging RFQ builder
Fill in your spec and quantities; get a clean request for quote you can copy and send to any supplier.
Open builder → SOURCINGPackaging timeline planner
Enter a launch date and tune each stage to find your order-by date, working backward.
Open planner → SOURCINGCo-packer scorecard
Rate a contract packager on weighted criteria for a fit score, your biggest gaps, and what to ask.
Open scorecard → PRICINGOverrun / underrun calculator
Order quantity and allowance in; the delivery range you'll get and how much to order to guarantee a minimum.
Open calculator → SOURCINGSupplier requirements builder
Your pallet, carton, labeling, and unitization rules in; a clean, ungated supplier packaging manual out.
Open builder → SIGN-OFFArtwork approval form
Project details in; a complete, printable artwork sign-off form with the full pre-press checklist — free and ungated.
Open builder → DESIGNPackaging design brief
Project details in; a complete, printable design brief a designer can work from — objective, audience, format, must-haves. Ungated.
Open builder → SOURCINGCo-packer cost calculator
A co-packer fee sheet in; the true all-in landed cost per unit — setup, pallet, storage and waste included.
Open calculator → PRICINGCustom box cost calculator
Box style, size, quantity and your board + setup quote in; the per-box cost from the real blank area and why quotes vary (amortization).
Open calculator → PRICINGShrink sleeve cost calculator
Container size and your film price in; film area and cost per sleeve from real wrap-around geometry.
Open calculator → PRICINGBlister packaging cost calculator
Tooling, card and seal costs and a volume in; the true per-unit cost and why quotes disagree (amortization).
Open calculator → PRICINGPackaging cost ratio calculator
Your packaging cost, unit cost and price in; packaging as a % of each — no invented benchmark.
Open calculator →Sell it — marketplace & compliance
Know what each channel and regulation expects before you commit.
FBA prep checker
Describe your product; get the Amazon FBA prep steps that apply, each linked to the rule to verify.
Open checker → COMPLIANCEEPR producer screener
See whether you're likely a covered producer under US packaging EPR laws — and where to confirm.
Open screener → BARCODESHow many UPCs do I need?
Variants, multipacks and case packs in; the total GTINs you need, plus the honest GS1-license-vs-reseller answer.
Open calculator →Automate it — workflow & ROI
Find the one thing worth automating first, and check the math before you buy the machine.
Workflow automation audit
Score your packaging workflow across four lanes and get the one lane worth automating first.
Open audit → AUTOMATIONAutomation ROI calculator
Estimate labor hours saved, net annual benefit, and payback — with a lower-volume stress test.
Open calculator → AUTOMATIONApproval cycle calculator
See the calendar time and review effort in your approval rounds — and what cutting one saves.
Open calculator →Every calculator here is an estimate for planning, with the formula and its assumptions stated in plain language — not a rate quote or an engineering certification. Validate critical numbers with your carrier, your converter, or a test. Want these built into how you spec packaging, not run one box at a time? That is what PackOS does. Building software? The same math is free at the Open Calc API.
Or skip the math entirely.
Upload a file and PackOS reads the spec, then estimates cube, case pack, pallet build, and freight as part of the quote.