LET’S FOLLOW YOUR SUPPLIES
Little cases.
Big journeys.
Choose an origin and enter cases for each product. Compare your current shipping estimate with buying local American-made products from the selected U.S. location.
Choose a current origin and an Local American supply location for each product.
01 / Build your basket
Pick · Count · CompareUse the same time period for all products. Enter whole cases; leave unused products at zero. Minimize unused items to shorten the list; expand them anytime. Quantities are not saved after you close or reload this page.
Catalog weights include product and shipping packaging. The same case weight is assumed for both origin scenarios.
02 / Your product comparison
Estimated kg CO₂ for the entered cases, rounded down to whole numbers. Totals and percentages use unrounded values. A positive Current estimate − Buy Local American Goods difference means the Buy Local American Goods shipping estimate is lower.
| Product | Origin | Miles to NJ | Local American supply / miles to NJ | Weight / case | Cases | Current estimate | Buy Local American Goods | Current − Local American |
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03 / Preset assumptions
Distances are illustrative, not mapped. Ocean routes assume arrival in NJ. The U.S. truck factor is used as a proxy for trucking in other countries. This calculator does not verify origin or supplier claims.
Important limitations & terms of use
Illustrative estimates, not measurements. This calculator and its reports are provided for general informational and preliminary scenario-comparison purposes only. Results are rough, weight-allocated estimates using preset case weights, assumed routes, average or historical emission factors, and quantities entered by the user. They have not been independently verified. Actual emissions may differ materially because of packaging, shipment volume, loading, vehicle or vessel type, fuel, routing, transfers, delays, and operating conditions.
Limited scope. Results estimate freight combustion CO₂ only, not all greenhouse gases expressed as CO₂e. They exclude raw materials, manufacturing, upstream fuel production, warehousing, port operations, product use, disposal, and other unmodeled activities. They do not establish that any product, company, or country of manufacture is environmentally preferable overall. The same case weight and product quantity are assumed for both scenarios; actual alternatives may differ.
No verified savings or certification. A difference between modeled scenarios is not a measurement or guarantee of actual avoided emissions. These results are not a lifecycle assessment, environmental product declaration, audit, certification, regulatory filing, carbon credit, or offset calculation. Source citations do not imply approval or endorsement by any cited organization.
Verify before relying or making claims. Users should verify quantities, case weights, origins, routes, emission factors, and fitness for their purpose with suppliers, carriers, or qualified advisers. Do not use this report alone to substantiate advertising claims, public environmental claims, or mandatory reporting. Keep its assumptions, sources, and limitations with any reproduction or distribution.
No warranties; limited liability. To the fullest extent permitted by applicable law, the calculator and reports are provided “as is” and “as available,” without warranties, express or implied, including accuracy, completeness, currency, merchantability, fitness for a particular purpose, or noninfringement. To the fullest extent permitted by applicable law, the provider disclaims liability for losses arising from reliance on these estimates. Nothing in this notice excludes or limits any right, warranty, remedy, or liability that applicable law does not allow to be excluded or limited.
Calculation method & factor sources
How cases become an estimate
Shipment weight = case count × preset shipped weight per case.
Truck kg CO₂ = shipment lb ÷ 2,000 × truck miles × truck factor.
Ocean kg CO₂ = shipment lb × 0.45359237 ÷ 1,000 × ocean miles × 1.609344 × ocean factor.
Sum each route's legs. Percentage difference = (Current estimate − Buy Local American Goods) ÷ current estimate × 100; it is undefined when the selected-origin estimate is zero. Display rounding does not represent measurement precision.
Sources & historical limitations
Truck: EPA 2025, Table 8, 0.186 kg CO₂ / short ton-mile.
Ocean: UK 2012, Annex 7, page 33, 0.01250 kg CO₂ / metric tonne-km, 8,000+ TEU container ship, 70% loading. This historical illustrative benchmark is not a current carrier-specific factor.