Welcome to the Carbon Calculator
This calculator can be used in two modes:
Anonymous mode: does not require a login - you can use most of the calculator features, but no data will be saved
Click the 'Enter without Login' button
User mode: If you have previously registered your email address, and want to retrieve your existing data and update it:
Click the Login button
If this is your first visit to the calculator and you would like to save your data you will need to register before you can log in:
Click the Register button
If you are not sure whether you have already registered, click Login and enter your email address- you will be asked to register if it is not recognised.
Note: If you choose anonymous mode there will be another opportunity to login and save the data you have entered when leaving the 'Totals' page.