4 free carbon emissions calculators and tools. Solve real-world carbon emissions problems instantly with accurate, step-by-step results on ApexCalc.
| Constant | Symbol | Value |
|---|---|---|
| Speed of light | c | 2.99792458×10⁸ |
| Planck's constant | h | 6.62607015×10⁻³‴ |
| Boltzmann constant | kʙ | 1.380649×10⁻²³ |
| Avogadro's number | Nₐ | 6.02214076×10²³ |
| Gravitational constant | G | 6.6743×10⁻¹¹ |
| Gas constant | R | 8.31446 |
| Elementary charge | e | 1.602176634×10⁻¹⁹ |
| Electron mass | mₑ | 9.1093837015×10⁻³¹ |
| Proton mass | mₚ | 1.67262192369×10⁻²⁷ |
| Fine-structure constant | α | 7.2973525693×10⁻³ |
Calculate corporate greenhouse gas emissions across all three scopes using GHG Protocol emission factors. Supports CDP and TCFD reporting.
Calculate carbon offset costs, evaluate offset project types, and model carbon neutrality pathways at different carbon prices.
Calculate total fleet greenhouse gas emissions, NOx, PM2.5, and fuel costs from vehicle type, mileage, and fuel type.
Calculate Energy Use Intensity (EUI), carbon intensity, and benchmark against ENERGY STAR baselines for commercial buildings.