Convert Millimeters of Mercury to Kilopounds per Square Inch
Instantly convert Millimeters of Mercury (mmHg) to Kilopounds per Square Inch (ksi) with our free online calculator.
Formula: mmHg to ksi — multiply by 1.9337e-5
Reference Table
| Millimeters of Mercury (mmHg) | Kilopounds per Square Inch (ksi) |
|---|---|
| 1 | 0.0000193367 |
| 5 | 0.0000966836 |
| 10 | 0.000193367 |
| 25 | 0.000483418 |
| 50 | 0.000966836 |
| 100 | 0.00193367 |
How to Convert Millimeters of Mercury to Kilopounds per Square Inch
Formula
To convert Millimeters of Mercury (mmHg) to Kilopounds per Square Inch (ksi): multiply by 1.9337e-5
Step-by-Step
- Start with your value in Millimeters of Mercury (mmHg).
- Multiply by 1.9337e-5 to perform the conversion.
- The result is your value expressed in Kilopounds per Square Inch (ksi).
Conversion Factor
1 mmHg = 0.0000193367 ksi
Reverse Factor
1 ksi = 51715.1 mmHg
Worked Example
Convert 25 Millimeters of Mercury to Kilopounds per Square Inch: 25 mmHg = 0.000483418 ksi
About Millimeters of Mercury (mmHg)
A unit of pressure historically defined as the pressure exerted by a column of mercury exactly 1 millimeter tall at the standard acceleration of gravity (9.80665 m/s²) and the standard density of mercury (13,595.1 kg/m³ at 0 °C). The mmHg's contemporary definition rounds to exactly 133.322387415 Pa (NIST SP 811). Despite being non-SI, mmHg remains the international clinical standard for blood pressure measurement ("120 over 80" mmHg) per WHO and ESH guidelines, and is the default unit for intraocular pressure in ophthalmology (normal IOP 10-21 mmHg per Glaucoma Research Foundation) and intracranial pressure monitoring in neurology. Numerically the mmHg is almost identical to the torr (1 mmHg ≈ 1.0000007 torr — the difference is whether one uses the conventional density or the experimentally measured density of mercury). Barometric atmospheric pressure was historically quoted in mmHg before kPa/hPa adoption (760 mmHg = 1 atm = 101.325 kPa).
About Kilopound per Square Inch (ksi)
An imperial unit of pressure equal to exactly 1,000 psi (≈ 6.895 MPa). KSI is the standard US unit for reporting material strength: structural-steel yield (A36 = 36 ksi, A992 W-shapes = 50 ksi, A572-Gr50 plate = 50 ksi, A514 quenched-tempered = 100 ksi), bolt-grade tensile strength (SAE Grade 5 = 120 ksi, Grade 8 = 150 ksi, ASTM A325 = 105-120 ksi, A490 = 150 ksi), aluminum aerospace alloys (7075-T6 ultimate = ~83 ksi), and the S-N fatigue curves in MMPDS / ASME Section VIII Division 3. US structural codes (AISC Steel Construction Manual, AASHTO LRFD Bridge Design), aerospace stress reports, and oil-and-gas casing specifications (API 5CT) all express allowables and yield in ksi. When cross-referencing US alloys against international material databases (typically MPa), the conversion ksi × 6.895 → MPa is essentially universal.
Quick Facts
- 1 Millimeters of Mercury equals 0.0000193367 Kilopounds per Square Inch
- 1 Kilopound per Square Inch equals 51715.1 Millimeters of Mercury
- Millimeters of Mercury is a unit of pressure
- Kilopound per Square Inch is a unit of pressure
- This conversion is commonly used in tire inflation, weather reporting, scuba diving, and engineering
- The Millimeters of Mercury belongs to the metric system
- The Kilopound per Square Inch belongs to the imperial system
Common Millimeters of Mercury to Kilopound per Square Inch Conversions
| Millimeters of Mercury (mmHg) | Kilopounds per Square Inch (ksi) |
|---|---|
| 0.1 | 0.00000193367 |
| 0.5 | 0.00000966836 |
| 1 | 0.0000193367 |
| 2 | 0.0000386734 |
| 5 | 0.0000966836 |
| 10 | 0.000193367 |
| 14.696 | 0.000284172 |
| 15 | 0.000290051 |
| 20 | 0.000386734 |
| 25 | 0.000483418 |
| 50 | 0.000966836 |
| 100 | 0.00193367 |
| 150 | 0.00290051 |
| 200 | 0.00386734 |
| 500 | 0.00966836 |
| 1000 | 0.0193367 |
Understanding Millimeters of Mercury
The Millimeters of Mercury (symbol: mmHg) is a unit of pressure. A unit of pressure historically defined as the pressure exerted by a column of mercury exactly 1 millimeter tall at the standard acceleration of gravity (9.80665 m/s²) and the standard density of mercury (13,595.1 kg/m³ at 0 °C). The mmHg's contemporary definition rounds to exactly 133.322387415 Pa (NIST SP 811). Despite being non-SI, mmHg remains the international clinical standard for blood pressure measurement ("120 over 80" mmHg) per WHO and ESH guidelines, and is the default unit for intraocular pressure in ophthalmology (normal IOP 10-21 mmHg per Glaucoma Research Foundation) and intracranial pressure monitoring in neurology. Numerically the mmHg is almost identical to the torr (1 mmHg ≈ 1.0000007 torr — the difference is whether one uses the conventional density or the experimentally measured density of mercury). Barometric atmospheric pressure was historically quoted in mmHg before kPa/hPa adoption (760 mmHg = 1 atm = 101.325 kPa).
It belongs to the metric measurement system.
Millimeters of Mercury are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Understanding Kilopounds per Square Inch
The Kilopound per Square Inch (symbol: ksi) is a unit of pressure. An imperial unit of pressure equal to exactly 1,000 psi (≈ 6.895 MPa). KSI is the standard US unit for reporting material strength: structural-steel yield (A36 = 36 ksi, A992 W-shapes = 50 ksi, A572-Gr50 plate = 50 ksi, A514 quenched-tempered = 100 ksi), bolt-grade tensile strength (SAE Grade 5 = 120 ksi, Grade 8 = 150 ksi, ASTM A325 = 105-120 ksi, A490 = 150 ksi), aluminum aerospace alloys (7075-T6 ultimate = ~83 ksi), and the S-N fatigue curves in MMPDS / ASME Section VIII Division 3. US structural codes (AISC Steel Construction Manual, AASHTO LRFD Bridge Design), aerospace stress reports, and oil-and-gas casing specifications (API 5CT) all express allowables and yield in ksi. When cross-referencing US alloys against international material databases (typically MPa), the conversion ksi × 6.895 → MPa is essentially universal.
It belongs to the imperial measurement system.
Kilopounds per Square Inch are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Why Convert Millimeters of Mercury to Kilopounds per Square Inch?
Engineers, mechanics, and scientists frequently need to convert pressure between Millimeters of Mercury and Kilopounds per Square Inch when working with different measurement standards. Tire pressure, blood pressure readings, weather barometric measurements, and industrial process specifications may all use different pressure units depending on the region or discipline. Reliable conversion prevents equipment misuse and ensures safety.
Frequently Asked Questions
How do I convert Millimeters of Mercury to Kilopounds per Square Inch?
A unit of pressure historically defined as the pressure exerted by a column of mercury exactly 1 millimeter tall at the standard acceleration of gravity (9. To convert Millimeters of Mercury to Kilopounds per Square Inch, multiply by 1.9337e-5. For example, 25 mmHg equals 0.000483418 ksi.
How many Kilopounds per Square Inch are in 1 Millimeters of Mercury?
There are 0.0000193367 Kilopounds per Square Inch in 1 Millimeters of Mercury.
How many Millimeters of Mercury are in 1 Kilopound per Square Inch?
There are 51715.1 Millimeters of Mercury in 1 Kilopound per Square Inch.
What is the formula for Millimeters of Mercury to Kilopound per Square Inch conversion?
The formula is: multiply by 1.9337e-5. This means 1 mmHg = 0.0000193367 ksi.
Is a Millimeters of Mercury bigger than a Kilopound per Square Inch?
Yes. One Millimeters of Mercury is larger than one Kilopound per Square Inch because 1 mmHg equals 0.0000193367 ksi, which is less than 1.
When do you need to convert between Millimeters of Mercury and Kilopounds per Square Inch?
An imperial unit of pressure equal to exactly 1,000 psi (≈ 6. Millimeters of Mercury and Kilopound per Square Inch are both pressure units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.