Contrails ! HPa and inches of mercury

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Altimeter setting

We sometimes happen to fly with an altimeter set in inches of mercury.

The conversion is not always straightforward, although it is wise to remember that the standard setting 29,92 in Hg corresponds to 1013,25 hPa.

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Conversion table

hPa vs in Hg rounded off to 1/100th of an inch.

Hectopascals / inches of mercury

Hectopascals (hPa)	Inches of mercury (In Hg)
950	28.05
951	28.08
952	28.11
953	28.14
954	28.17
955	28.20
956	28.23
957	28.26
958	28.29
959	28.32
960	28.35
961	28.38
962	28.41
963	28.44
964	28.47
965	28.50
966	28.52
967	28.55
968	28.58
969	28.61
970	28.64
971	28.67
972	28.70
973	28.73
974	28.76
975	28.79
976	28.82
977	28.85
978	28.88
979	28.91
980	28.94
981	28.97
982	29.00
983	29.03
984	29.06
985	29.09
986	29.12
987	29.14
988	29.17
989	29.20
990	29.23
991	29.26
992	29.29
993	29.32
994	29.35
995	29.38
996	29.41
997	29.44
998	29.47
999	29.50
1000	29.53

Hectopascals (hPa)	Inches of mercury (In Hg)
1001	29.56
1002	29.59
1003	29.62
1004	29.65
1005	29.68
1006	29.71
1007	29.74
1008	29.76
1009	29.79
1010	29.82
1011	29.85
1012	29.88
1013.25	29.92
1014	29.94
1015	29.97
1016	30.00
1017	30.03
1018	30.06
1019	30.09
1020	30.12
1021	30.15
1022	30.18
1021	30.15
1022	30.18
1023	30.21
1024	30.24
1025	30.27
1026	30.30
1027	30.33
1028	30.36
1029	30.39
1030	30.41
1031	30.44
1032	30.47
1033	30.50
1034	30.53
1035	30.56
1036	30.59
1037	30.62
1038	30.65
1039	30.68
1040	30.71
1041	30.74
1042	30.77
1043	30.80
1044	30.83
1045	30.86
1046	30.86
1047	30.92
1048	30.95
1049	30.98
1050	31.01

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Last modified
21-04-2021 @ 14:16:43