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
Cost per roasted lb
$8.99
Cost per cup
$0.357
Cost per 12 oz bag
$6.74
Retail margin
62.5%
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter green coffee price ($/lb).
- 2Enter roast shrinkage (%).
- 3Enter energy per roasted lb ($).
- 4Enter bag + label ($).
- 5Enter labor per roasted lb ($).
- 6Enter grams per cup.
- 7Enter retail bag price (12 oz) ($).
- 8Read your cost per roasted lb on the right — it updates as you type.
- 9Hit Share to keep the scenario or send it to someone.
About this calculator
Green coffee price plus roast shrinkage, energy, bags, and labor gives a real cost per roasted pound and per brewed cup.
Worked example
Using the values the calculator loads with:
Inputs
- Green coffee price: 5.2 $/lb
- Roast shrinkage: 16 %
- Energy per roasted lb: 0.35 $
- Bag + label: 0.85 $
- Labor per roasted lb: 1.6 $
- Grams per cup: 18
- Retail bag price (12 oz): 18 $
Results
- Cost per roasted lb: $8.99
- Cost per cup: $0.357
- Cost per 12 oz bag: $6.74
- Retail margin: 62.5%
What each field means
Inputs
- Green coffee price ($/lb)
- The green coffee price used in the calculation, measured in $/lb. Starts at 5.2 $/lb so you have a working example on load.
- Roast shrinkage (%)
- The roast shrinkage used in the calculation, measured in %. Starts at 16 % so you have a working example on load. Accepted range: 5–25 %.
- Energy per roasted lb ($)
- The energy per roasted lb used in the calculation, measured in $. Starts at 0.35 $ so you have a working example on load.
- Bag + label ($)
- The bag + label used in the calculation, measured in $. Starts at 0.85 $ so you have a working example on load.
- Labor per roasted lb ($)
- The labor per roasted lb used in the calculation, measured in $. Starts at 1.6 $ so you have a working example on load.
- Grams per cup
- The grams per cup used in the calculation. Starts at 18 so you have a working example on load.
- Retail bag price (12 oz) ($)
- The retail bag price (12 oz) used in the calculation, measured in $. Starts at 18 $ so you have a working example on load.
Results
- Cost per roasted lb
- 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.
- Cost per cup
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Cost per 12 oz bag
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Retail margin
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the coffee roasting cost calculator work?
Green coffee price plus roast shrinkage, energy, bags, and labor gives a real cost per roasted pound and per brewed cup.
What do I need to enter?
7 values: green coffee price, roast shrinkage, energy per roasted lb, bag + label, labor per roasted lb, grams per cup, and retail bag price (12 oz). Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the cost per roasted lb result mean?
It is returned as a money amount in US dollars and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
Who is this tool for?
It's built for anyone comparing money scenarios before committing — budgeting a payment, sanity-checking a quote, or seeing what a change in rate or term actually costs.
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.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Coffee Roasting Cost Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/coffee-roasting-cost
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/coffee-roasting-cost" target="_blank" rel="noopener">Coffee Roasting Cost Calculator — RevenueLab</a> (2026).</p>
Source: [Coffee Roasting Cost Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/coffee-roasting-cost) (2026).