Convert Pascal-seconds to Pounds per foot-hour
Instantly convert Pascal-seconds (Pa·s) to Pounds per foot-hour (lb/(ft·hr)) with our free online calculator.
Formula: Pa·s to lb/(ft·hr) — multiply by 2419.09
Reference Table
| Pascal-seconds (Pa·s) | Pounds per foot-hour (lb/(ft·hr)) |
|---|---|
| 1 | 2419.09 |
| 5 | 12095.4 |
| 10 | 24190.9 |
| 25 | 60477.2 |
| 50 | 120954 |
| 100 | 241909 |
How to Convert Pascal-seconds to Pounds per foot-hour
Formula
To convert Pascal-seconds (Pa·s) to Pounds per foot-hour (lb/(ft·hr)): multiply by 2419.09
Step-by-Step
- Start with your value in Pascal-seconds (Pa·s).
- Multiply by 2419.09 to perform the conversion.
- The result is your value expressed in Pounds per foot-hour (lb/(ft·hr)).
Conversion Factor
1 Pa·s = 2419.09 lb/(ft·hr)
Reverse Factor
1 lb/(ft·hr) = 0.000413379 Pa·s
Worked Example
Convert 25 Pascal-seconds to Pounds per foot-hour: 25 Pa·s = 60477.2 lb/(ft·hr)
About Pascal-second (Pa·s)
The SI unit of dynamic (absolute) viscosity (ISO 80000-4 §4-32) — the ratio of shear stress to velocity gradient in a flowing Newtonian fluid (τ = μ · du/dy). Pa·s is the universal reference unit in fluid mechanics research, CFD solver inputs (Ansys Fluent, OpenFOAM, COMSOL all use Pa·s internally), rheology and tribology research, lubricant film calculations, and polymer melt-flow analysis. Reference values: water at 20 °C is 1.002 × 10⁻³ Pa·s (the calibration baseline), air at 20 °C is 1.81 × 10⁻⁵ Pa·s (~55× less viscous than water), SAE 30 engine oil at 40 °C ≈ 0.1 Pa·s, honey at room temperature ~10 Pa·s, peanut butter ~250 Pa·s, the asthenosphere of Earth's mantle ~10¹⁹ Pa·s. Glass at its working temperature (~1,400 °C) is ~100 Pa·s; at its glass-transition temperature ~10¹² Pa·s — the conventional definition of Tg. Convert Pa·s to cP (centipoise) by multiplying by 1,000; to lb/(ft·s) by dividing by 1.488.
About Pound per foot-hour (lb/(ft·hr))
An imperial dynamic-viscosity unit using pound-mass per foot-hour (≈ 4.1338 × 10⁻⁴ Pa·s = 0.4134 cP per NIST SP 811 = exactly 1/3,600 of lb/(ft·s)). Used in US process-engineering and HVAC contexts where the natural process timescale is hours rather than seconds — making the time-base of the viscosity unit match the time-base of the mass-flow or heat-flow calculation it appears in, eliminating intermediate unit conversions. Common in heat-transfer-coefficient correlations for gas-phase viscosity at industrial operating conditions (gas viscosity is ~10⁻⁵ Pa·s, which in lb/(ft·hr) becomes ~0.02 — a much more legible number than the SI version). Also appears in older US chemical-engineering handbooks (Perry's pre-2008 editions, McCabe-Smith-Harriott, Bird-Stewart-Lightfoot first edition), refining-process design references where the entire material/energy balance is in lb-h-ft-Btu units, and gas-pipeline transmission design per AGA Report No. 8 and 10 supercompressibility tables. Convert lb/(ft·hr) to Pa·s by multiplying by 4.1338 × 10⁻⁴; to cP by multiplying by 0.4134.
Quick Facts
- 1 Pascal-second equals 2419.09 Pounds per foot-hour
- 1 Pound per foot-hour equals 0.000413379 Pascal-seconds
- Pascal-second is a unit of dynamic viscosity
- Pound per foot-hour is a unit of dynamic viscosity
- This conversion is commonly used in lubricant selection, chemical processing, and fluid dynamics
- The Pascal-second belongs to the metric system
- The Pound per foot-hour belongs to the imperial system
Common Pascal-second to Pound per foot-hour Conversions
| Pascal-seconds (Pa·s) | Pounds per foot-hour (lb/(ft·hr)) |
|---|---|
| 0.01 | 24.1909 |
| 0.1 | 241.909 |
| 0.25 | 604.772 |
| 0.5 | 1209.54 |
| 1 | 2419.09 |
| 2 | 4838.18 |
| 3 | 7257.26 |
| 5 | 12095.4 |
| 10 | 24190.9 |
| 15 | 36286.3 |
| 20 | 48381.8 |
| 25 | 60477.2 |
| 50 | 120954 |
| 75 | 181432 |
| 100 | 241909 |
| 250 | 604772 |
| 500 | 1209540 |
| 1000 | 2419090 |
| 5000 | 12095400 |
| 10000 | 24190900 |
Understanding Pascal-seconds
The Pascal-second (symbol: Pa·s) is a unit of dynamic viscosity. The SI unit of dynamic (absolute) viscosity (ISO 80000-4 §4-32) — the ratio of shear stress to velocity gradient in a flowing Newtonian fluid (τ = μ · du/dy). Pa·s is the universal reference unit in fluid mechanics research, CFD solver inputs (Ansys Fluent, OpenFOAM, COMSOL all use Pa·s internally), rheology and tribology research, lubricant film calculations, and polymer melt-flow analysis. Reference values: water at 20 °C is 1.002 × 10⁻³ Pa·s (the calibration baseline), air at 20 °C is 1.81 × 10⁻⁵ Pa·s (~55× less viscous than water), SAE 30 engine oil at 40 °C ≈ 0.1 Pa·s, honey at room temperature ~10 Pa·s, peanut butter ~250 Pa·s, the asthenosphere of Earth's mantle ~10¹⁹ Pa·s. Glass at its working temperature (~1,400 °C) is ~100 Pa·s; at its glass-transition temperature ~10¹² Pa·s — the conventional definition of Tg. Convert Pa·s to cP (centipoise) by multiplying by 1,000; to lb/(ft·s) by dividing by 1.488.
It belongs to the metric measurement system.
Pascal-seconds are commonly used in lubricant selection, chemical processing, and fluid dynamics.
Understanding Pounds per foot-hour
The Pound per foot-hour (symbol: lb/(ft·hr)) is a unit of dynamic viscosity. An imperial dynamic-viscosity unit using pound-mass per foot-hour (≈ 4.1338 × 10⁻⁴ Pa·s = 0.4134 cP per NIST SP 811 = exactly 1/3,600 of lb/(ft·s)). Used in US process-engineering and HVAC contexts where the natural process timescale is hours rather than seconds — making the time-base of the viscosity unit match the time-base of the mass-flow or heat-flow calculation it appears in, eliminating intermediate unit conversions. Common in heat-transfer-coefficient correlations for gas-phase viscosity at industrial operating conditions (gas viscosity is ~10⁻⁵ Pa·s, which in lb/(ft·hr) becomes ~0.02 — a much more legible number than the SI version). Also appears in older US chemical-engineering handbooks (Perry's pre-2008 editions, McCabe-Smith-Harriott, Bird-Stewart-Lightfoot first edition), refining-process design references where the entire material/energy balance is in lb-h-ft-Btu units, and gas-pipeline transmission design per AGA Report No. 8 and 10 supercompressibility tables. Convert lb/(ft·hr) to Pa·s by multiplying by 4.1338 × 10⁻⁴; to cP by multiplying by 0.4134.
It belongs to the imperial measurement system.
Pounds per foot-hour are commonly used in lubricant selection, chemical processing, and fluid dynamics.
Why Convert Pascal-seconds to Pounds per foot-hour?
Converting between Pascal-seconds and Pounds per foot-hour is a frequent requirement for engineers, scientists, and students working with dynamic viscosity values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate dynamic viscosity conversion is essential.
Frequently Asked Questions
How do I convert Pascal-seconds to Pounds per foot-hour?
The SI unit of dynamic (absolute) viscosity (ISO 80000-4 §4-32) — the ratio of shear stress to velocity gradient in a flowing Newtonian fluid (τ = μ · du/dy). To convert Pascal-seconds to Pounds per foot-hour, multiply by 2419.09. For example, 25 Pa·s equals 60477.2 lb/(ft·hr).
How many Pounds per foot-hour are in 1 Pascal-second?
There are 2419.09 Pounds per foot-hour in 1 Pascal-second.
How many Pascal-seconds are in 1 Pound per foot-hour?
There are 0.000413379 Pascal-seconds in 1 Pound per foot-hour.
What is the formula for Pascal-second to Pound per foot-hour conversion?
The formula is: multiply by 2419.09. This means 1 Pa·s = 2419.09 lb/(ft·hr).
Is a Pascal-second bigger than a Pound per foot-hour?
No. One Pascal-second is smaller than one Pound per foot-hour because 1 Pa·s equals 2419.09 lb/(ft·hr), which is greater than 1.
When do you need to convert between Pascal-seconds and Pounds per foot-hour?
An imperial dynamic-viscosity unit using pound-mass per foot-hour (≈ 4. Pascal-second and Pound per foot-hour are both dynamic viscosity 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.