Calculate your Tree Credit Score

Everyone should plant one tree for every year they live on Earth and be proud of having a positive Tree Credit Score. Do you know how to calculate your Tree Credit Score?

Planting a number of trees to match your age is not as difficult as you might imagine. Anyone can have a go at tree planting, and you may be surprised at how many you can plant in an hour or two. Even if you are quite mature in age, it won’t take you long to ‘catch up’ so that your tree count matches your years! The secret is to plant trees regularly, every year. Before you know it, you may move into tree credit. If you are old, infirm or simply too busy, then there are many non-profit organisations which will accept a donation and plant trees on your behalf. 

If you are not sure where to plant a tree, there are lots of schemes and activities across the country. Try contacting your local wildlife trust to volunteer or any one of the national environmental charities. If you fancy yourself as a ‘tree terrorist’ or ‘gorilla tree planter’, there’s little to stop you scattering tree seed or planting out seedlings quietly in the countryside, in hedgerows, or even around our towns and cities.

‘Everyone should plant a tree for every year they live on Earth.’

Dr Gabriel Hemery, The Tree Almanac 2025

I launched the Tree Credit Score as a concept in The Tree Almanac 2025 (Robinson Books). If you want to find out more, I recommend that you buy a copy, either from one of these online sellers or direct from me.

How to calculate your Tree Credit Score

Calculating your Tree Credit Score (TCS) is quite straightforward. Just subtract your age in years (A) from the number of trees you have planted (P) in your life to date. The following elegant formula prevents a negative credit score:

If the mathematical equation looks a little complicated, don’t worry. I’ve created a simple Tree Credit Score calculator. Find out more and calculate your Tree Credit Score using my free calculator. You can even download a personalised certificate.

If you feel as strongly as I do about the biodiversity crisis and about climate change, please share this page with your friends and family to help spread the word! Or, copy and paste this url: www.gabhem.com/tcs