CO2 calculator

CO2 calculator
IPCC report of 2018: halve global emissions by 2030
Key messages from Greta Thunberg and the other youth activists
Climate crisis 10-point action plan Planting trees is not the answer Reduce your carbon footprint: 10% per year
Emissions from home energy Emissions from cars Emissions from food Buses Aviation
The "Net Zero 2050" UK Government deceits UK Government deceit: overclaiming the reduction in UK CO2 emissions
Basic UK energy and greenhouse gas statistics UK average footprint
About us

The climate crisis and what to do about it

Key points Climate change: the basics Stop burning fossil fuels: Stay within the budget of 420Gt CO2 Global emissions are rising and governments are failing The rising feeling of desperation Simple solutions for the climate crisis, which should have been implemented already

Action needed

Summary Local government Local government: Make walking safe National government Organisations Individuals Passivhaus home standards 'Offsetting'?

False and dubious solutions

Tree planting claims by Zurich scientists were withdrawn "Hydrogen power"

Awareness raising

Leaflets, video

Civil disobedience

Civil disobedience in a democracy: Q and A Civil disobedience and the law Extinction Rebellion

Reasons for optimism

Decline in UK domestic aviation Decline of domestic aviation in Sweden

Tecnicalities by sector

The UK has not cut its greenhouse gas emissions International comparisons "Green electricity" Health, education, etc emissions Trains Calculator version information

Standards of administration in a democracy

Effective planning Nolan's Seven Principles of Public Life

Performance assessments

Assessing performance on the climate crisis BEIS is not telling the truth on carbon emissions Transport for the North: Failing on the climate crisis Steve Rotheram: failing on the climate crisis

Best practice examples

Wirral Council's emission reduction trajectory Why trust this website?





Reduce your carbon footprint: 10% per year

We advocate that people reduce their carbon footprint by at least 10% per year.

This is in line with

We suggest:


The evidence is that the purchasing decisions of a group of individuals can have a large effect. Fair trade is one example. It has expanded enormously in the last few decades, all down to the personal purchasing decisions of individuals.

Our experience

We started measuring our carbon footprint in 2006 for the year 2005: it was 11.9 tonnes equivalent CO2, i.e. not much less than the UK average of 13.4 tonnes - and we thought we were pretty environmentally aware!

We settled on a plan of a reduction of 10% per year - we considered more, but 20% per year seems difficult and would probably not be something that we could advocate to others. A smaller reduction e.g. 5% seemed half-hearted. So we settled on a 10% reduction per year i.e. to 90% of the previous year's target.

Initially we were on track:

YearTarget (tonnes equivalent CO2)Actual CO2 footprint
200610.7 (i.e. 90% of 11.9) 9.6
20079.6 (i.e. 90% of 10.7)9.1
20088.6 (i.e. 90% of 9.6)7.9
20097.7 (i.e. 90% of 8.6)7.7
20106.9 (i.e. 90% of 7.7)6.8
20116.2 (i.e. 90% of 6.9)6.0
20126.0 (i.e. 96% of 6.2)5.9
20135.8 (i.e. 96% of 6.0)6.0
20145.6 (i.e. 96% of 5.8)5.9
20155.4 (i.e. 96% of 5.6)6.2
20165.2 (i.e. 96% of 5.4)6.0
20175.0 (i.e. 96% of 5.2)5.7
20184.8 (i.e. 96% of 5.0)6.0
20194.6 (i.e. 96% of 4.8)5.9
20204.4 (i.e. 96% of 4.6)4.8

After 2011, we reached half of our initial carbon footprint (and less than half of the average UK value). This was achieved via the changes of
None of this felt difficult.

From 2011, our plan was to reduce at a rate of 4% per year, so that our footprint stayed at less than half of the per person value needed to meet the UK Government's then 2020 and 2050 targets.

We have found even this to be difficult, partly because of government inaction, in particular


[1]United Nations: Intergovernmental Panel on Climate Change (IPCC) SR15 report (Oct 2018)
[2]Paris Agreement (2015) - Article 4(1) (page2) has the commitment that developing countries will take longer for emissions to peak, with the implication that developed countries will reduce more quickly
[3]Passivhous home heating standards

First published: 2009
Last updated: 29 May 2021