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I am performing a power analysis for a planned study. The previous effect sizes I see reported in the literature are all beta coefficients from multiple regression.

It looks like power analysis calculators online use f squared as an effect size (i.e. https://www.danielsoper.com/statcalc/calculator.aspx?id=1) and I cannot find one that uses beta coefficients instead.

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Power analysis for multivariate regressions is easily done using simulations. If you are comfortable with working in R, Alex Coppock has a nice guide on how to use simulations for power analysis at the EGAP website. See http://egap.org/methods-guides/10-things-you-need-know-about-statistical-power and http://egap.org/content/power-analysis-simulations-r.

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