Programme finder
Which programme fits your goal
Free calculators
Fifteen free tools to measure a footprint, check what applies to your company and plan a tree programme. They run in your browser; nothing is stored.
Free to use · nothing is stored · sources for every factor
For companies
Find the right programme and see what the rules ask of you.
For companies
Work out emissions, trees, budgets and credits.
For you
Everyday footprints, and the trees that would balance them.
Quick answer
Companies checking duties should start with the mandate checker or CSR obligation calculator; companies measuring emissions, with the business carbon footprint calculator; industrial sites, with the green belt calculator. For your own footprint, start with the carbon footprint calculator, then the commute, flight, social media or wedding calculators. Every result shows the trees that would balance it.
Yes. They run in your browser, need no sign-up, and nothing you enter is stored.
Each calculator lists its sources: the Central Electricity Authority for grid electricity, IPCC defaults for fuels, and the UK government's 2025 conversion factors for travel and hotels, used as an approximation for India.
They are estimates for awareness and planning, not audited figures. Companies reporting under BRSR should use measured data and an assured inventory.
Using about 21.8 kg CO₂ taken up by a mature tree each year, allowing for 85% survival across our programmes. Young trees take up much less.
Yes. Individuals can plant from ₹299 a tree; companies can plan a programme with site, species, care and GreenTrack reporting.
About Grow Billion Trees
We plant, geo-tag and look after every tree for three years, for companies, NGOs and families.