How many mmHg is 1 kPa?

7.50061575846 mmHg, printed to twelve significant digits. It scales cleanly, so 2 kPa is 15.0012315169 mmHg, 5 kPa is 37.5030787923 mmHg, 16 kPa is 120.009852135 mmHg, 50 kPa is 375.030787923 mmHg and 100 kPa is 750.061575846 mmHg. Signed scalar inputs are accepted without determining their pressure reference, so -1 kPa returns -7.50061575846 mmHg.

What is the formula for kPa to mmHg?

mmHg = kPa × 1,000 / 133.322387415 under the conventional definition. The rounded multiplier 7.50061575846 approximates that division and can change final rounding. In reverse, kPa = mmHg × 0.133322387415: 760 mmHg displays as 101.325014435 kPa and 750 mmHg as 99.9917905613 kPa. The factor is exact for the stated convention, while outputs round beyond twelve significant digits. Swap units reverses the pair and retains the typed scalar.

Why is 101.325 kPa not exactly 760 mmHg here?

The conventional millimetre of mercury and torr are distinct units. Here conventional mmHg is exactly 133.322387415 Pa, derived from the stated density 13,595.1 kg/m³, standard gravity 9.80665 m/s² and height 0.001 m. Torr is exactly 101,325/760 Pa. The unit-size difference is about 1.4 parts in ten million; rounded digit agreement depends on the quantity and precision. Thus 101.325 kPa displays as 759.999891726 mmHg, while 760 mmHg displays as 101.325014435 kPa. This converter contains conventional mmHg and no torr unit.

Is mmHg the same as torr?

They have different definitions: torr is exactly 101,325/760 Pa, while conventional mmHg is exactly 133.322387415 Pa. The converter prints conventional mmHg. For a separately supplied torr convention, calculate directly from original kPa as torr = kPa × 1,000 × 760 / 101,325. Thus 101.325 kPa is exactly 760 torr. Multiplying a rounded displayed atm result by 760 only approximates the original quantity; it can introduce further rounding. Torr is absent from the menu.

Why is mmHg missing from the list under the answer?

Because it is marked as an uncommon unit, and the list under the answer shows common units until you ask for the rest. Tick Show 1 more in the readout strip and the mmHg row appears. Nothing about the headline is affected: mmHg sits in both unit menus and the To box is already on it when you arrive. For 1 kPa, the list reads 1,000 Pa, 0.01 bar, 0.14503773773 psi and 0.00986923266716 atm, with 7.50061575846 mmHg added once the switch is on.

How do I convert mmHg back to kPa?

Press the swap button and the page becomes mmHg to kPa: 1 mmHg gives 0.133322387415 kPa, 750 mmHg gives 99.9917905613 kPa and 760 mmHg gives 101.325014435 kPa. The same reading in the other units of the list is there too, so 1 mmHg is 133.322387415 Pa, 0.00133322387415 bar, 0.0193367774595 psi and 0.00131578966114 atm.

What is a kilopascal, and what is the base unit here?

A pascal is one newton per square metre, and a kilopascal is exactly 1,000 of them, so 1 kPa is 1,000 Pa and 100 kPa is 1 bar. The readout strip under the boxes names the category, Pressure, and the base unit every factor in it is defined against, the pascal. The full pressure menu holds Pa, kPa, bar, psi and atm, and conventional mmHg. Both menus always contain mmHg; Show 1 more controls its readout row.

Does the converter know gauge pressure from absolute pressure?

This converter preserves the supplied pressure reference and has no gauge-to-absolute mode. Gauge pressure is relative to a stated reference, while absolute pressure is relative to vacuum. To derive absolute pressure separately, supply the applicable ambient pressure and add it before converting. The standard atmosphere of 101.325 kPa is a defined unit; it does not establish current ambient pressure.

Why does the page open on kPa and mmHg when I last converted something else?

This focused page opens on Kilopascal and Millimeter of mercury, while preserving the main converter’s saved unit pair. When storage is usable, a saved value and uncommon-unit preference can travel between pages. Its suffix must still match From. Valid deliberate scalar edits can save those fields after a short delay; invalid or incomplete drafts preserve the saved record. Unusable or conflicting records remain until you use Forget saved settings, which keeps the current conversion on screen. Your input and converted values are calculated in the browser and are not uploaded by the converter. The definitions arrive with the page, so conversion needs no external data lookup and keeps working offline after the page has loaded. The core conversion needs no account. Copy result copies the displayed headline without digit-grouping commas; each visible conversion row has its own Copy button. Displayed and copied values round to twelve significant digits. If native copying fails, a complete selectable summary identifies the input, selected pair and conventions and includes every unit in the category, including uncommon units.

kPa to mmHg Converter

One millimetre of mercury is 133.322387415 pascals, so kilopascals to millimetres of mercury is one division: mmHg = kPa × 1,000 / 133.322387415, using the exact stored conventional factor; multiplying by the rounded reciprocal 7.50061575846 only approximates it. That makes 1 kPa 7.50061575846 mmHg, 10 kPa 75.0061575846 mmHg, 20 kPa 150.012315169 mmHg and 100 kPa 750.061575846 mmHg, and the reverse is exact to the factor itself: 1 mmHg is 0.133322387415 kPa. The 133.322387415 is a convention rather than a measurement of any particular column of mercury: it fixes the mercury density at 13,595.1 kg/m³ and gravity at the standard 9.80665 m/s², so the unit stays put while real mercury expands with temperature. This page opens with Kilopascal (kPa) in the From box and Millimeter of mercury (mmHg) in the To box, ahead of whatever pair the converter last remembered, and prints twelve significant digits. mmHg is flagged as an uncommon unit here, which affects only the list below the answer: the headline conversion works as normal, and ticking Show 1 more in the readout strip adds the mmHg row to the list beside pascals, bar, psi and atmospheres. The unit is the one printed on barometers, vacuum gauges and blood pressure cuffs, while the SI unit of pressure is the pascal. This page changes units and nothing else: it says nothing about what any reading means.

From

To7.50061575846

Category: Pressure

Base unit: pascal

Uncommon units: Show 1 more

One standard atmosphere is 101,325 Pa. mmHg is the conventional 133.322387415 Pa, distinct from the torr (exactly 101,325/760 Pa). The psi coefficient is rounded to 6,894.757293168 Pa. Converting units preserves gauge or absolute reference; it does not add ambient pressure.

Results round to 12 significant digits using the listed unit definitions. Input must have a finite numeric magnitude and at most 512 significant digits. Type a single decimal or scientific number; a matching From unit suffix is accepted. Commas and grouped spaces separate thousands; decimal commas, fractions and compound measurements are refused.

1 kPa in every pressure unit

PascalPa
1,000
Barbar
0.01
Pound per square inchpsi
0.14503773773
Atmosphereatm
0.00986923266716

Selectable complete conversion

Unit Converter — Pressure
Input: 1 (Kilopascal, kPa)
Result: 7.50061575846 mmHg (Millimeter of mercury)
Displayed values round to 12 significant digits.
One standard atmosphere is 101,325 Pa. mmHg is the conventional 133.322387415 Pa, distinct from the torr (exactly 101,325/760 Pa). The psi coefficient is rounded to 6,894.757293168 Pa. Converting units preserves gauge or absolute reference; it does not add ambient pressure.
All other units:
Pascal (Pa): 1000
Bar (bar): 0.01
Pound per square inch (psi): 0.14503773773
Atmosphere (atm): 0.00986923266716
Millimeter of mercury (mmHg): 7.50061575846

Common questions

How many mmHg is 1 kPa?: 7.50061575846 mmHg, printed to twelve significant digits. It scales cleanly, so 2 kPa is 15.0012315169 mmHg, 5 kPa is 37.5030787923 mmHg, 16 kPa is 120.009852135 mmHg, 50 kPa is 375.030787923 mmHg and 100 kPa is 750.061575846 mmHg. Signed scalar inputs are accepted without determining their pressure reference, so -1 kPa returns -7.50061575846 mmHg.
What is the formula for kPa to mmHg?: mmHg = kPa × 1,000 / 133.322387415 under the conventional definition. The rounded multiplier 7.50061575846 approximates that division and can change final rounding. In reverse, kPa = mmHg × 0.133322387415: 760 mmHg displays as 101.325014435 kPa and 750 mmHg as 99.9917905613 kPa. The factor is exact for the stated convention, while outputs round beyond twelve significant digits. Swap units reverses the pair and retains the typed scalar.
Why is 101.325 kPa not exactly 760 mmHg here?: The conventional millimetre of mercury and torr are distinct units. Here conventional mmHg is exactly 133.322387415 Pa, derived from the stated density 13,595.1 kg/m³, standard gravity 9.80665 m/s² and height 0.001 m. Torr is exactly 101,325/760 Pa. The unit-size difference is about 1.4 parts in ten million; rounded digit agreement depends on the quantity and precision. Thus 101.325 kPa displays as 759.999891726 mmHg, while 760 mmHg displays as 101.325014435 kPa. This converter contains conventional mmHg and no torr unit.
Is mmHg the same as torr?: They have different definitions: torr is exactly 101,325/760 Pa, while conventional mmHg is exactly 133.322387415 Pa. The converter prints conventional mmHg. For a separately supplied torr convention, calculate directly from original kPa as torr = kPa × 1,000 × 760 / 101,325. Thus 101.325 kPa is exactly 760 torr. Multiplying a rounded displayed atm result by 760 only approximates the original quantity; it can introduce further rounding. Torr is absent from the menu.
Why is mmHg missing from the list under the answer?: Because it is marked as an uncommon unit, and the list under the answer shows common units until you ask for the rest. Tick Show 1 more in the readout strip and the mmHg row appears. Nothing about the headline is affected: mmHg sits in both unit menus and the To box is already on it when you arrive. For 1 kPa, the list reads 1,000 Pa, 0.01 bar, 0.14503773773 psi and 0.00986923266716 atm, with 7.50061575846 mmHg added once the switch is on.
How do I convert mmHg back to kPa?: Press the swap button and the page becomes mmHg to kPa: 1 mmHg gives 0.133322387415 kPa, 750 mmHg gives 99.9917905613 kPa and 760 mmHg gives 101.325014435 kPa. The same reading in the other units of the list is there too, so 1 mmHg is 133.322387415 Pa, 0.00133322387415 bar, 0.0193367774595 psi and 0.00131578966114 atm.
What is a kilopascal, and what is the base unit here?: A pascal is one newton per square metre, and a kilopascal is exactly 1,000 of them, so 1 kPa is 1,000 Pa and 100 kPa is 1 bar. The readout strip under the boxes names the category, Pressure, and the base unit every factor in it is defined against, the pascal. The full pressure menu holds Pa, kPa, bar, psi and atm, and conventional mmHg. Both menus always contain mmHg; Show 1 more controls its readout row.
Does the converter know gauge pressure from absolute pressure?: This converter preserves the supplied pressure reference and has no gauge-to-absolute mode. Gauge pressure is relative to a stated reference, while absolute pressure is relative to vacuum. To derive absolute pressure separately, supply the applicable ambient pressure and add it before converting. The standard atmosphere of 101.325 kPa is a defined unit; it does not establish current ambient pressure.
Why does the page open on kPa and mmHg when I last converted something else?: This focused page opens on Kilopascal and Millimeter of mercury, while preserving the main converter’s saved unit pair. When storage is usable, a saved value and uncommon-unit preference can travel between pages. Its suffix must still match From. Valid deliberate scalar edits can save those fields after a short delay; invalid or incomplete drafts preserve the saved record. Unusable or conflicting records remain until you use Forget saved settings, which keeps the current conversion on screen. Your input and converted values are calculated in the browser and are not uploaded by the converter. The definitions arrive with the page, so conversion needs no external data lookup and keeps working offline after the page has loaded. The core conversion needs no account. Copy result copies the displayed headline without digit-grouping commas; each visible conversion row has its own Copy button. Displayed and copied values round to twelve significant digits. If native copying fails, a complete selectable summary identifies the input, selected pair and conventions and includes every unit in the category, including uncommon units.

Results round to 12 significant digits using the listed unit conventions. Many factors are exact definitions; psi and parsec use rounded coefficients. Temperature includes scale offsets. Days and weeks are fixed-duration units, and unit conversion does not determine calendar dates, ambient pressure or a software label’s convention.