How to calculate the cost of a carbon offset
Offsetting my annual carbon footprint
For the purposes of the exercise, let's assume a hypothetical carbon footprint (determined by using our calculator). of 10,000 Kg.

The calculation is 10,000(kg)/1,000(kg per tonne) = 10 tonnes.

10 tonnes x $60= $600 per annum to offset your footprint.
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Offsetting a flight
We use a figure of 0.1kg of carbon per km per passenger
A return flight from Auckland to Sydney for one passenger would require an offset of $10.33 calculated as follows: â€‹

Calculate the distance between the cities at this link: https://www.distancefromto.net/

The distance to Sydney is 2,156km x 2 (return flight) = 4,312km

The carbon emissions are calculated as follows 4,132km x 0.1kg per km = 413.2kg

413.2kg x $60per tonne = 413.2/1,000 x $60 = $24.79 to offset the flight.
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Offsetting a Motor Vehicle Trip
We estimate that in a medium sized vehicle you will emit 0.24kg per kilometre.

Using this, a one way trip between Kerikeri and Auckland (242km) would generate 58.08kg of carbon.

58.08kg/1,000 x $60 = $3.48 to offset the trip.
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