SBTi Target Calculator

About the SBTi Target Calculator

The Science Based Targets initiative (SBTi) provides companies with a credible framework for setting emission reduction targets consistent with the Paris Agreement. The SBTi's absolute contraction approach requires companies to reduce emissions by approximately 4.2% per year for 1.5°C alignment, or about 2.5% per year for well-below 2°C alignment.

This SBTi Target Calculator applies the absolute contraction formula to your base-year emissions. Enter your base-year CO2, choose the ambition level (1.5°C or 2°C), and set the target timeframe (typically 5–10 years for near-term targets). The calculator shows the required reduction percentage, the target-year emissions level, and the cumulative budget.

Whether you're preparing an SBTi submission or simply benchmarking against science-based pathways, This calculator helps you understand what 1.5°C alignment looks like for your specific emission levels.

This measurement provides a critical foundation for energy auditing and sustainability reporting, helping organizations meet regulatory requirements and voluntary environmental commitments. 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

SBTi-validated targets are the gold standard for corporate climate commitments. This calculator helps you understand the required reduction rate, set realistic milestones, and prepare for the SBTi validation process. Regular monitoring of this value helps energy teams detect usage anomalies early and address equipment malfunctions or operational issues before they drive utility costs higher.

How to Use the Inputs

1. Enter your base-year total CO2 emissions (Scope 1 + 2, and optionally Scope 3).
2. Select the ambition level: 1.5°C (4.2%/yr) or Well Below 2°C (2.5%/yr).
3. Enter the number of years for the target (SBTi requires 5–10 year near-term targets).
4. View the target-year emissions, total reduction as a percentage, and annual milestones.
5. Use results to inform your SBTi submission or internal planning.

Example Calculation

Tips & Best Practices

• SBTi requires near-term targets of 5–10 years from the submission date.
• Scope 3 targets are required if Scope 3 exceeds 40% of total emissions.
• The 4.2% annual rate is required for 1.5°C alignment; 2.5% for well-below 2°C.
• Choose a robust base year that reflects typical operations (not an outlier year).
• Get your target validated by SBTi for external credibility.
• Review SBTi sector-specific guidance for additional requirements.

Understanding the SBTi Framework

SBTi offers two main approaches: absolute contraction (reduce total emissions by a fixed rate) and sector-specific (use industry pathways). Most companies use absolute contraction for Scopes 1–2. The required reduction rate is derived from global carbon budgets and shared equitably across the economy.

Near-Term vs Long-Term Targets

Near-term targets cover 5–10 years and focus on Scopes 1–2 with 4.2% annual reduction for 1.5°C. Long-term (net-zero) targets aim for at least 90% reduction by 2050 across all scopes. This calculator handles near-term planning; use the Net Zero Pathway Calculator for long-term goals.

Preparing for SBTi Validation

Validation requires a commitment letter, detailed emission inventory, proposed targets with methodology documentation, and a target submission form. The process typically takes 6–12 months. Starting with this calculator helps you understand the scale of commitment before beginning the formal process.

Frequently Asked Questions

• What is SBTi?

  The Science Based Targets initiative is a partnership between CDP, the UN Global Compact, WRI, and WWF. It validates corporate emission reduction targets to ensure they are consistent with climate science and the Paris Agreement goals.

• What is the 4.2% annual reduction?

  SBTi's absolute contraction approach for 1.5°C alignment requires approximately 4.2% annual reduction in absolute Scope 1+2 emissions. This rate is derived from IPCC scenarios that limit warming to 1.5°C with no or limited overshoot.

• Do I need to include Scope 3?

  If your Scope 3 emissions represent 40% or more of your total (Scope 1+2+3), SBTi requires you to set a Scope 3 target. Many companies find that Scope 3 dominates their total, especially in sectors like retail, finance, and technology.

• How do I choose a base year?

  Choose the most recent year for which you have reliable, complete emissions data. It should represent normal operations — avoid years with unusual events (like COVID lockdowns). SBTi allows adjustments for significant structural changes.

• Is the compound reduction formula exact?

  The formula Target = Base × (1 − r)^n gives the minimum target. SBTi validates using their own tools, which may differ slightly. It gives a close approximation for planning purposes.

• What happens if I miss my target?

  SBTi requires annual reporting of progress. If you're off track, you need to develop corrective action plans. Persistent failure to meet targets can result in removal from the SBTi companies list, affecting your credibility.