Reforestation Carbon Calculator

About the Reforestation Carbon Calculator

Reforestation — replanting trees on previously forested land — is one of the largest-scale natural climate solutions. Forests sequester approximately 3–15 tonnes of CO2 per hectare per year, depending on climate, species, and stand age. Over decades, reforested land can accumulate hundreds of tonnes of CO2 per hectare.

This Reforestation Carbon Calculator estimates total CO2 sequestered by a planting project. Enter the area in hectares, the average annual sequestration rate, and the project lifetime. The calculator projects cumulative carbon removal.

Project developers, conservation organizations, and carbon credit investors use these estimates for project design, credit issuance, and impact assessment.

Integrating this calculation into regular energy reviews ensures that conservation strategies are grounded in measured data rather than assumptions about building performance and usage patterns. Precise measurement of this value supports sustainable energy planning and helps organizations reduce their environmental impact while maintaining operational performance and comfort levels.

Integrating this calculation into regular energy reviews ensures that conservation strategies are grounded in measured data rather than assumptions about building performance and usage patterns.

When This Page Helps

Reforestation projects need credible carbon projections for funding, credit issuance, and impact communication. It gives a transparent, adjustable estimate for project planning.

How to Use the Inputs

1. Enter the reforestation area in hectares.
2. Enter the average annual sequestration rate (tonnes CO2/ha/yr).
3. Enter the project duration in years.
4. View total cumulative CO2 sequestered.

Example Calculation

Tips & Best Practices

• Tropical reforestation can sequester 10–15 t CO2/ha/yr; temperate is 3–8 t/ha/yr.
• Mixed native species improve biodiversity and resilience over monocultures.
• Sequestration rates are low in early years and peak after 10–20 years.
• Include buffer pools (10–20% of credits) for permanence risk.
• Monitoring, reporting, and verification (MRV) are essential for carbon credit programs.
• Consider soil carbon, which may add 30–50% to above-ground biomass estimates.

Global Reforestation Potential

The Bonn Challenge aims to restore 350 million hectares of degraded land by 2030. At average sequestration rates, this could remove 1–2 billion tonnes of CO2 per year — about 3–5% of global emissions. While not sufficient alone, it's a meaningful contribution.

Economics of Reforestation

Projects typically cost $500–5,000 per hectare for planting, depending on location and species. Carbon credit revenue ($5–30/tonne) can offset some costs. In many cases, reforestation also provides timber, non-timber forest products, and ecosystem service payments.

Monitoring with Technology

Remote sensing (satellite imagery, LiDAR), drone surveys, and ground-based sampling enable accurate monitoring of forest growth and carbon stocks. These technologies are improving and becoming more affordable, increasing confidence in reforestation carbon claims.

Frequently Asked Questions

• What is a typical sequestration rate?

  Rates vary widely: tropical moist forests average 10–15 t CO2/ha/yr, temperate forests 3–8 t/ha/yr, and boreal forests 1–4 t/ha/yr. Fast-growing eucalyptus plantations can exceed 20 t/ha/yr but with biodiversity tradeoffs.

• How long do carbon credits last?

  Carbon credits from reforestation typically have 20–40 year accounting periods. However, the carbon remains stored as long as the forest stands. Permanence guarantees usually extend 100 years for crediting programs like Verra VCS.

• What are non-permanence risks?

  Fire, pest outbreaks, illegal logging, and climate change impacts (drought, storms) can release stored carbon. Credit programs address this through buffer pools: 10–20% of credits are set aside in a shared insurance pool.

• How does afforestation differ from reforestation?

  Reforestation replants land that was previously forested. Afforestation plants trees on land that was not recently forested (e.g., degraded agricultural land). Both sequester carbon, but they face different ecological and social considerations.

• Can I earn carbon credits from reforestation?

  Yes. Reforestation projects can generate carbon credits under standards like Verra VCS, Gold Standard, and Plan Vivo. Credits require third-party validation, monitoring, and verification. The process typically takes 1–2 years to set up.

• Does this calculator account for varying growth rates?

  This is a linear estimate using average annual rates. In reality, sequestration follows a growth curve: low in early years, peaking at 10–20 years, then declining as forests mature. For detailed project planning, use forestry growth models.