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This is the underlying spreadsheet behind FarmKind's impact calculator and compassion calculator
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For context on why these calculators exists, and how they works at a high level, see this blog post
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We think it’s important to be clear about the limitations of our methodology.
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• Ballpark accuracy: Estimating the impact of donations and the cost to offset dietary choices is inherently complex. To add to this challenge, there is often limited available data to work with. As such, our outputs should be viewed as rough ballpark estimates rather than precise figures.
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• Past performance does not guarantee future results: Our estimates are grounded in the real-world past performance of our recommended charities. We believe this is the strongest evidence for the likely future performance of a charity, but it is not a guarantee. The future impact of additional donations could be higher or lower, influenced by a wide range of unpredictable factors. Some programs could hit diminishing returns. Others could discover new efficiencies.
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• Based on a sample of programs: We base our estimates on the charity programs for which there is available data (typically their the main programs). This means that overall they may help different kinds of animals and may help them in different ways than what is captured in our estimates.
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• Focus on direct impacts: We typically estimate direct impacts only. Indirect benefits, such as raising public awareness and motivation to improve our food system, are not captured in our calculations, even though they can be significant.
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• Potential bias of data sources: Our estimates often rely on data provided by the charities themselves. While charities may have an incentive to present themselves positively, all of our recommended charities have met the rigorous standards of the Animal Charity Evaluators team, ensuring transparency and data integrity.
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• Estimates for some charities are based on others: When accurate estimates for a specific charity are unavailable, we base our estimates on the most similar recommended charities.
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Last updated: 27th August 2025