Offset Your CO2 Emissions by the Tonne

US$15.00 per tonne | 90% goes to projects | 100% U.S. tax-deductible

Offset any number of tonnes at right (below if mobile/tablet). For individuals in the U.S., our calculator is provided below. Others can find their per-capita carbon emissions figures here.

Important Notes

  • A PayPal account is not required. After entering your number of tonnes and clicking the ‘donate’ button, simply select the ‘Pay without a PayPal account’ option on the next page.
  • To offset, enter your tonnes (rounded to the nearest tonne) and click ‘donate’.
  • If, after clicking ‘donate’, you receive the error message “Things don’t appear to be working at the moment. Please try again later.”, please clear out your cookies, browser history, etc. and try again.

Carbon Footprint Calculator (U.S.)

Where Your Money Goes

Your tonnes will be evenly allocated to our projects and you will receive a detailed offset acknowledgement like this one. Your tonnes will be included in our public carbon credit retirements on the Markit Environmental Registry like this. You can track COTAP’s progress and download projects’ annual reports, which contain detailed accounting of payments to communities, in our Transparency section..

Enter Any Number of Tonnes

US$15 /tonne | 90% to Projects | Tax-deductible (U.S.) For other amounts, please use

COTAP’s Khasi Hills Documentary

Testimonials & Beneficiary Profiles

Important Calculator Notes

COTAP’s thorough calculator methodology can be found here. Record your inputs and results before leaving this page, as our calculator doesn’t retain results.