How many hPa is 1 inHg?
1 inHg = 33.864 hPa
It is 33.864 hPa, so saying 34 hPa is fine — rounding is within 0.5%.
And how many inHg is 1 hPa?
1 hPa = 0.03 inHg
Formula: hPa = inHg × 33.8639
inHg to hPa around this value
0.1 inHg3.386hPa
0.2 inHg6.773hPa
0.3 inHg10.159hPa
0.4 inHg13.546hPa
0.5 inHg16.932hPa
0.6 inHg20.318hPa
0.7 inHg23.705hPa
0.8 inHg27.091hPa
0.9 inHg30.478hPa
1 inHg33.864hPa
1.1 inHg37.25hPa
1.2 inHg40.637hPa
1.3 inHg44.023hPa
1.4 inHg47.409hPa
1.5 inHg50.796hPa
1.6 inHg54.182hPa
1.7 inHg57.569hPa
1.8 inHg60.955hPa
1.9 inHg64.341hPa
2 inHg67.728hPa