Barometric Pressure Converter
Unit ConversionConvert barometric (weather) pressure readings between mmHg, atmospheres, kilopascals, pascals, megapascals, bar, and psi. Type any value and every field updates instantly.
Barometric Pressure
Weather Units
Other units
1 mmHg = 0.001316 Atmospheres ⟷ 1 Atmospheres = 759.999892 mmHg
1 mmHg = 0.133322 Kilopascals ⟷ 1 Kilopascals = 7.500616 mmHg
1 mmHg = 133.322387 Pascals ⟷ 1 Pascals = 0.007501 mmHg
1 mmHg = 0.000133 Megapascals ⟷ 1 Megapascals = 7,500.615758 mmHg
1 mmHg = 0.001333 Bar ⟷ 1 Bar = 750.061576 mmHg
1 mmHg = 0.019337 PSI ⟷ 1 PSI = 51.714925 mmHg
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Frequently Asked Questions
What is a normal barometric pressure reading?
Standard sea-level atmospheric pressure is 760 mmHg, equal to exactly 1 atmosphere or about 101.325 kilopascals — this is the default value shown above.
Why is barometric pressure often reported in mmHg?
Millimeters of mercury (mmHg) has been the traditional unit for barometers since mercury barometers were invented, and it remains common in weather reports and medical blood pressure readings.
How does barometric pressure relate to weather forecasting?
Falling barometric pressure generally signals an approaching storm, while rising pressure typically indicates clearing weather — meteorologists track these changes in mmHg, kPa, or millibars.