From one carton to the whole shipment.
Calculate CBM, dimensional weight, pallet capacity, container loading, paper weight, roll geometry, and material thickness with connected tools built for real planning workflows.
Try one carton
Enter dimensions once and see the connected planning outputs.
Professional calculators, one clear purpose
Use a single tool for a quick answer or move through the connected workflow from package dimensions to pallet and container planning.
CBM Calculator
Multi-SKU carton volume, total shipment CBM, cubic feet, liters, and weight.
High demandPallet Calculator
Cartons per layer, layers, loaded height, gross weight, and a pallet layout preview.
B2BDimensional Weight
Compare actual and volumetric weight using metric or imperial divisors.
FreightContainer Loading
Orthogonal carton capacity for 20GP, 40GP, and 40HC containers.
B2BBox Volume
Box and shipment volume in m³, ft³, liters, and per-carton volume.
PackagingPaper Weight / GSM
Calculate paper weight from GSM or estimate GSM from known sheet weight.
PaperRoll Calculator
Roll length from diameter, diameter from length, and web material weight.
Paper & filmThickness Converter
Convert micron, millimeter, mil, inch, and nanometer values.
ConversionThe product is the workflow
Most calculator sites stop at one answer. PackFlow is designed so each result naturally supports the next logistics decision.
Transparent formulas
Every calculator explains the formula, assumptions, and where real-world packing can differ.
Customizable constraints
Change pallet dimensions, height limits, payloads, divisors, and container dimensions instead of trusting hidden defaults.
Local-first privacy
Recent package dimensions can be stored in your browser to reduce re-entry. No account is required.