There are a number of tools available for pre-revenue valuation which are commonly used in Silicon Valley and other startup hubs. These can help you calculate a close estimated value without needing any financial inputs, since typically you would not have any real financial data available for a newly-launched startup. Some of these methods include Risk Summation, Scorecard, and the Berkus methods. There are some automated tools available online to calculate valuation based on these methods, such as at eleva8or.com and other platforms.