Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Total annual savings
$83,750
Material cost savings
$68,750
Freight cost savings
$15,000
Emissions avoided
81.25
Savings per unit
$0.1675
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How to use this
- 1Enter units shipped per year.
- 2Enter current packaging weight per unit (oz).
- 3Enter redesigned weight per unit (oz).
- 4Enter material cost per lb ($).
- 5Enter freight savings per unit ($).
- 6Enter material emission factor (kg CO2e/lb).
- 7Read your total annual savings on the right — it updates as you type.
- 8Hit Share to keep the scenario or send it to someone.
About this calculator
Packaging redesign projects — thinner corrugate, right-sizing boxes, switching to mono-material film — save money on material cost and on freight, since lighter and smaller packages cost less to ship, and they cut embodied carbon because less material is manufactured and transported. This calculator compares your current packaging weight and unit volume against a redesigned version, computing material cost savings, an estimated freight savings from reduced dimensional weight, and the emissions avoided from lower material throughput. Companies use this to build the business case for packaging engineering investment, since procurement and sustainability teams often need both a cost number and a carbon number to get sign-off. A 20% weight reduction on a high-volume SKU can add up to six figures annually once you multiply by shipping volume, which is usually the number that gets a redesign project funded.
Worked example
Using the values the calculator loads with:
Inputs
- Units shipped per year: 500000
- Current packaging weight per unit: 6 oz
- Redesigned weight per unit: 4 oz
- Material cost per lb: 1.1 $
- Freight savings per unit: 0.03 $
- Material emission factor: 1.3 kg CO2e/lb
Results
- Total annual savings: $83,750
- Material cost savings: $68,750
- Freight cost savings: $15,000
- Emissions avoided: 81.25
- Savings per unit: $0.1675
What each field means
Inputs
- Units shipped per year
- The units shipped per year used in the calculation. Starts at 500000 so you have a working example on load.
- Current packaging weight per unit (oz)
- The current packaging weight per unit used in the calculation, measured in oz. Starts at 6 oz so you have a working example on load.
- Redesigned weight per unit (oz)
- The redesigned weight per unit used in the calculation, measured in oz. Starts at 4 oz so you have a working example on load.
- Material cost per lb ($)
- The material cost per lb used in the calculation, measured in $. Starts at 1.1 $ so you have a working example on load.
- Freight savings per unit ($)
- The freight savings per unit used in the calculation, measured in $. Starts at 0.03 $ so you have a working example on load.
- Material emission factor (kg CO2e/lb)
- The material emission factor used in the calculation, measured in kg CO2e/lb. Starts at 1.3 kg CO2e/lb so you have a working example on load.
Results
- Total annual savings
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Material cost savings
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Freight cost savings
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Emissions avoided
- Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Savings per unit
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
Why include freight savings, not just material cost?
Parcel carriers price on dimensional weight above a threshold, so a lighter, smaller package can drop a shipment into a cheaper rate tier even when the material cost difference is small. For high-volume e-commerce SKUs, freight savings from right-sizing often exceed the material savings alone.
What material emission factor should I use?
Corrugate cardboard runs roughly 0.9-1.1 kg CO2e per lb depending on recycled content; virgin plastics run higher, often 1.5-3 kg CO2e per lb. Use your specific supplier's environmental product declaration (EPD) if you have one — generic factors are fine for a directional estimate but not for public claims.
How long do packaging redesign projects typically take to pay back?
Tooling and validation testing (drop tests, compression tests, transit testing) usually take 3-6 months, and most redesigns pay back the tooling investment within the first year once you're at meaningful volume, since the per-unit savings compound with every shipment.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
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Supply Chain Emissions Intensity Calculator
Emissions per dollar of spend by supplier category, spend-based method.
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Packaging Material Reduction Savings Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/packaging-reduction-savings
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/packaging-reduction-savings" target="_blank" rel="noopener">Packaging Material Reduction Savings Calculator — RevenueLab</a> (2026).</p>
Source: [Packaging Material Reduction Savings Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/packaging-reduction-savings) (2026).