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 offset cost
$405,000
Blended price per ton
$81.00
Forestry credit spend
$30,000
Tech/DAC credit spend
$375,000
Share of annual revenue
2.025%
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter emissions to offset (tCO2e).
- 2Enter share as forestry/nature credits (%).
- 3Enter forestry credit price ($/ton).
- 4Enter tech/dac credit price ($/ton).
- 5Enter annual revenue (optional, for context) ($).
- 6Read your total offset cost on the right — it updates as you type.
- 7Hit Share to keep the scenario or send it to someone.
About this calculator
Once you know your emissions total, offsetting is a straightforward multiplication — but offset quality and price vary enormously, from $3/ton for cheap forestry credits to $500+/ton for verified direct air capture. This calculator lets you model the cost of offsetting a given emissions volume across different project types and blend them into a portfolio, which is how most corporate buyers actually approach it rather than buying one credit type. It also shows the cost as a percentage of a hypothetical revenue base so finance teams can gut-check whether an offset commitment is material. Buying offsets doesn't replace reduction — under SBTi and most credible net-zero frameworks, offsets only count for residual emissions after you've cut what you can, so use this for the 'last mile' portion of your footprint, not the whole number.
Worked example
Using the values the calculator loads with:
Inputs
- Emissions to offset: 5000 tCO2e
- Share as forestry/nature credits: 50 %
- Forestry credit price: 12 $/ton
- Tech/DAC credit price: 150 $/ton
- Annual revenue (optional, for context): 20000000 $
Results
- Total offset cost: $405,000
- Blended price per ton: $81.00
- Forestry credit spend: $30,000
- Tech/DAC credit spend: $375,000
- Share of annual revenue: 2.025%
What each field means
Inputs
- Emissions to offset (tCO2e)
- The emissions to offset used in the calculation, measured in tCO2e. Starts at 5000 tCO2e so you have a working example on load.
- Share as forestry/nature credits (%)
- The share as forestry/nature credits used in the calculation, measured in %. Starts at 50 % so you have a working example on load. Accepted range: 0–100 %.
- Forestry credit price ($/ton)
- The forestry credit price used in the calculation, measured in $/ton. Starts at 12 $/ton so you have a working example on load.
- Tech/DAC credit price ($/ton)
- The tech/dac credit price used in the calculation, measured in $/ton. Starts at 150 $/ton so you have a working example on load.
- Annual revenue (optional, for context) ($)
- The annual revenue (optional, for context) used in the calculation, measured in $. Starts at 20000000 $ so you have a working example on load.
Results
- Total offset cost
- 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.
- Blended price per ton
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Forestry credit spend
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Tech/DAC credit spend
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Share of annual revenue
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
Why do offset prices vary so much?
Nature-based credits (reforestation, avoided deforestation) are cheap because the underlying land management is inexpensive, but they carry permanence and additionality risk — trees burn down, projects would have happened anyway. Engineered removal like direct air capture is 10-40x more expensive but delivers durable, verifiable tons, which is why buyers increasingly blend both.
Are offsets required for net-zero claims?
No credible framework lets you offset your way to net zero without first cutting emissions. SBTi's Net-Zero Standard requires 90%+ absolute reduction before offsets (as 'neutralization') can address the remainder, so treat this calculator as pricing the residual, not the whole inventory.
What's a reasonable price to budget per ton in 2024?
Voluntary market averages run $5-20/ton for standard nature-based credits and $100-600/ton for high-durability removal credits like biochar or DAC. If your organization has made public net-zero commitments, expect scrutiny to push you toward the higher-quality, higher-priced end over time.
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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Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Carbon Offset Cost Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/carbon-offset-cost
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/carbon-offset-cost" target="_blank" rel="noopener">Carbon Offset Cost Calculator — RevenueLab</a> (2026).</p>
Source: [Carbon Offset Cost Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/carbon-offset-cost) (2026).