Net Zero Calculator
Plan a path to net-zero emissions by calculating required annual reductions and remaining offsets needed.
metric tons CO2e
%
years
USD
Residual Emissions at Target
484 metric tons CO2e
Total Reduction Achieved516 metric tons CO2e
Annual Offsets Needed484 metric tons CO2e
Annual Offset Cost14,519 USD
Residual Emissions at Target vs Years to Net Zero
How to Plan for Net Zero
Net zero means reducing emissions as much as possible and offsetting the remainder.
Formula
Residual Emissions = Current * (1 - Annual Reduction %)^Years
Offsets Needed = Residual Emissions
The Science Based Targets initiative requires at least 90% absolute reduction before relying on offsets for net zero. Remaining emissions must be neutralized through high-quality carbon removal.
Example Calculation
A company emitting 1,000 tons CO2e reduces 7% annually over 10 years with $30/ton offsets.
- 01Residual: 1,000 * (1 - 0.07)^10 = 1,000 * 0.484 = 484 metric tons
- 02Total reduced: 1,000 - 484 = 516 metric tons
- 03Offsets needed: 484 metric tons/year
- 04Offset cost: 484 * $30 = $14,520/year