Foundrs

The Foundrs Co-Founder Equity Calculator is free to tool based on almost 3 years of one-on-one discussions with entrepreneurs through co-founders meetups and conferences.

Fill out as many of the questions below as possible. If the question doesn’t apply to your situation, leave the answer blank. For questions where selecting multiple founders is allowed, try to limit your selection to one or two founders, not everyone.

What this calculator doesn’t do: it doesn’t handle salaries, co-founders who invest significant cash, or co-founders who join long after the first version of a product has shipped.

For projects that are heavily design-oriented, it’s ok to replace the questions about development by design, but keep in mind that you need developers as well.