By using this online calculator, you agree to the Terms and Conditions (T&C) of our website, including the provisions outlined in our Disclaimer. Please note that this is the basic version of the calculator. An advanced version of this calculator can be tailored to specific needs. For more information, including customization options, please contact us. Get in touch with us for more details. Email: lichin@emi-cast.com

Maritime decarbonisation

FuelEU and CII Calculator

Explore how fuel choice, low-carbon measures and annual vessel performance influence FuelEU Maritime compliance and IMO Carbon Intensity Indicator ratings.

2025–2050 outlookInstant results
Step 1
Define the assessment inputs

Fuel Selection

Low-carbon options

🌬️

Ship Characteristics

Voyage Characteristics

Step 2
Review results for reporting
WtW GHG intensity
gCO₂eq/MJ
FuelEU balance
tCO₂eq
Attained CII
gCO₂/dwt·nm
CII rating
FuelEU Maritime
  • Uptake of sustainable alternative fuels & energy onboard
  • Use onshore power supply (OPS) at ports

Emission intensity in Year 2025–2050

FuelEU reference value is 91.16 gCO₂eq/MJ in 2020.
ResultValue
Compliance balance (tons CO₂eq)
FuelEU penalty (EUR)
IMO CII
  • Could be improved with optimisation of ship design, engine efficiency and uptake of low-carbon fuels.

CII in Year 2025–2050

CII Rating
Attained CII: –
TtW CO₂ is the current CII basis. TtW and WtW GHG lines include all greenhouse gases and lifecycle emissions respectively, for forward-looking comparison.

📄 Generate Report

Creates a formal PDF report of this page's fuel, ship and annual performance assessment.

Watch this demo video with step-by-step guidance on how to use this calculator!

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