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Calcimator

Soil Carbon Calculator

Estimate carbon sequestration from regenerative practices including cover crops, no-till, compost, and rotational grazing.

Inputs

%

Results

Annual sequestration (tCO2e/acre)

0.75

Annual total (tCO2e)75
Cumulative sequestration (tCO2e)699.4
Projected SOC increase (%)0.19
Projected SOC (%)2.19
Annual credit revenue ($)$1,875.00
Cumulative revenue ($)$17,484.38
How to Use This Calculator
  1. Enter Field size (acres), Current SOC (%), and Cover cropping (0/1).
  2. Set No-till (0/1), Compost (tons/acre/yr), and Rotational grazing (0/1).
  3. Adjust Projection (years), Carbon credit price ($/tCO2e) as needed.
  4. Review the Annual sequestration (tCO2e/acre) result.
  5. Use Annual total (tCO2e) and Cumulative sequestration (tCO2e) to inform your decision.

How the result changes with Current SOC (%)

Current SOC (%)Annual sequestration (tCO2e/acre)
1.290.88
4.260.38
7.830.38
110.38

What each input means

Field size (acres)
Total acreage under regenerative management.
Current SOC (%)
Current soil organic carbon percentage in top 6 inches. Typical range: 1-4% for cropland, 3-6% for grassland.
Cover cropping (0/1)
Set to 1 if using multi-species cover crops, 0 if not.
No-till (0/1)
Set to 1 if practicing no-till or strip-till, 0 for conventional tillage.
Compost (tons/acre/yr)
Annual compost application rate. Typical: 2-5 tons/acre.
Rotational grazing (0/1)
Set to 1 if using adaptive multi-paddock grazing, 0 if not applicable.
Projection (years)
Number of years to project cumulative sequestration.
Carbon credit price ($/tCO2e)
Market price per ton of CO2-equivalent for voluntary carbon credits.

What each result means

Annual sequestration (tCO2e/acre)
Estimated CO2-equivalent sequestered per acre per year.
Annual total (tCO2e)
Total CO2-equivalent sequestered across all acres per year.
Cumulative sequestration (tCO2e)
Total CO2-equivalent sequestered over the projection period.
Projected SOC increase (%)
Estimated increase in soil organic carbon percentage.
Projected SOC (%)
Estimated SOC percentage after the projection period.
Annual credit revenue ($)
Potential annual income from carbon credit sales.
Cumulative revenue ($)
Total potential income from carbon credits over the projection period.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Field size (acres) = 100, Current SOC (%) = 2, Cover cropping (0/1) = 1, No-till (0/1) = 1 = 8 input(s) provided
  2. Calculate Annual sequestration
    Annual sequestration = coverCropRate + noTillRate + compostRate + grazingRate
    0.75 = 0.75
  3. Calculate Annual total
    Annual total = annualRatePerAcre * acres
    75 = 75
  4. Calculate Cumulative sequestration
    Cumulative sequestration
    699.4 = 699.4

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