Barometric pressure conversion from Hpa to inHg?

Is there a way to convert Hpa to inHg? Not seeing an element that does that or an option for inHg in settings. And for my purposes Hpa is definitely not useful.

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The ratio between the units hPa to height Hg is a fixed constant.

for hPa to in Hg, the factor is 2.95299830715E-2

So, add a Text layer. Open the Advanced tab for this layer ( little rocket symbol bottom right) and in the text field ( top field of Advance tab ) paste the following expression:


I hope that helps.