Convert Pounds per second to Kilograms per second
Instantly convert Pounds per second (lb/s) to Kilograms per second (kg/s) with our free online calculator.
Formula: lb/s to kg/s — multiply by 0.453592
Reference Table
| Pounds per second (lb/s) | Kilograms per second (kg/s) |
|---|---|
| 1 | 0.453592 |
| 5 | 2.26796 |
| 10 | 4.53592 |
| 25 | 11.3398 |
| 50 | 22.6796 |
| 100 | 45.3592 |
How to Convert Pounds per second to Kilograms per second
Formula
To convert Pounds per second (lb/s) to Kilograms per second (kg/s): multiply by 0.453592
Step-by-Step
- Start with your value in Pounds per second (lb/s).
- Multiply by 0.453592 to perform the conversion.
- The result is your value expressed in Kilograms per second (kg/s).
Conversion Factor
1 lb/s = 0.453592 kg/s
Reverse Factor
1 kg/s = 2.20462 lb/s
Worked Example
Convert 25 Pounds per second to Kilograms per second: 25 lb/s = 11.3398 kg/s
About Pound per second (lb/s)
An imperial mass-flow unit (≈ 0.453592 kg/s per NIST SP 811). lb/s is the dominant working unit in US aerospace engineering for turbomachinery: turbojet, turbofan, and turboprop engine performance data published by P&W, GE Aviation, Honeywell, and Rolls-Royce North America quote corrected and uncorrected mass flow in lb/s on type-certificate data sheets and FAR Part 33 power-plant certification documents per FAA Advisory Circular 33-2B. US-edition combustion textbooks (Glassman, Turns, Cengel & Boles) and gas-turbine engineering textbooks (Mattingly, Saravanamuttoo, Boyce) use lb/s throughout. Reference values: a GE F404 turbojet (F/A-18 Hornet) airflow ~146 lb/s at takeoff; GE9X (Boeing 777X) ~1,600 lb/s; CF6-80C2 (747-400) ~1,769 lb/s; F-1 first-stage rocket engine (Saturn V) ~5,683 lb/s of RP-1 + LOX; SpaceX Merlin 1D ~520 lb/s. Convert lb/s to kg/s by multiplying by 0.4536; to lb/hr by multiplying by 3,600; to lb/min by multiplying by 60.
About Kilogram per second (kg/s)
The SI unit of mass flow rate (ISO 80000-4 §4-30) — mass of substance crossing a fixed boundary per unit time. kg/s is the universal unit in chemical, mechanical, and propulsion engineering for process material balances, combustion-stoichiometry analysis (air and fuel flow rates), turbomachinery design (compressor and turbine corrected mass flow), and rocket propulsion. Coriolis mass-flow meters per ASME PTC 19.5 and Micro Motion CMF / Endress+Hauser Promass series industrial transmitters report directly in kg/s. Reference scale: Space Shuttle main engines consumed ~512 kg/s of LH2/LOX propellant each at full thrust (3 × ~1.5 GW power equivalent); the SpaceX Raptor 2 engine ~720 kg/s; a commercial high-bypass turbofan burns ~3 kg/s of Jet A at cruise; a 100 MW gas turbine ~300 kg/s air mass flow. Convert to lb/s by dividing by 0.4536; to kg/hr by multiplying by 3,600; to lb/hr by multiplying by 7,937.
Quick Facts
- 1 Pound per second equals 0.453592 Kilograms per second
- 1 Kilogram per second equals 2.20462 Pounds per second
- Pound per second is a unit of mass flow rate
- Kilogram per second is a unit of mass flow rate
- This conversion is commonly used in chemical processing, fuel systems, and environmental monitoring
- The Pound per second belongs to the imperial system
- The Kilogram per second belongs to the metric system
Common Pound per second to Kilogram per second Conversions
| Pounds per second (lb/s) | Kilograms per second (kg/s) |
|---|---|
| 0.01 | 0.00453592 |
| 0.1 | 0.0453592 |
| 0.25 | 0.113398 |
| 0.5 | 0.226796 |
| 1 | 0.453592 |
| 2 | 0.907184 |
| 3 | 1.36078 |
| 5 | 2.26796 |
| 10 | 4.53592 |
| 15 | 6.80388 |
| 20 | 9.07184 |
| 25 | 11.3398 |
| 50 | 22.6796 |
| 75 | 34.0194 |
| 100 | 45.3592 |
| 250 | 113.398 |
| 500 | 226.796 |
| 1000 | 453.592 |
| 5000 | 2267.96 |
| 10000 | 4535.92 |
Understanding Pounds per second
The Pound per second (symbol: lb/s) is a unit of mass flow rate. An imperial mass-flow unit (≈ 0.453592 kg/s per NIST SP 811). lb/s is the dominant working unit in US aerospace engineering for turbomachinery: turbojet, turbofan, and turboprop engine performance data published by P&W, GE Aviation, Honeywell, and Rolls-Royce North America quote corrected and uncorrected mass flow in lb/s on type-certificate data sheets and FAR Part 33 power-plant certification documents per FAA Advisory Circular 33-2B. US-edition combustion textbooks (Glassman, Turns, Cengel & Boles) and gas-turbine engineering textbooks (Mattingly, Saravanamuttoo, Boyce) use lb/s throughout. Reference values: a GE F404 turbojet (F/A-18 Hornet) airflow ~146 lb/s at takeoff; GE9X (Boeing 777X) ~1,600 lb/s; CF6-80C2 (747-400) ~1,769 lb/s; F-1 first-stage rocket engine (Saturn V) ~5,683 lb/s of RP-1 + LOX; SpaceX Merlin 1D ~520 lb/s. Convert lb/s to kg/s by multiplying by 0.4536; to lb/hr by multiplying by 3,600; to lb/min by multiplying by 60.
It belongs to the imperial measurement system.
Pounds per second are commonly used in chemical processing, fuel systems, and environmental monitoring.
Understanding Kilograms per second
The Kilogram per second (symbol: kg/s) is a unit of mass flow rate. The SI unit of mass flow rate (ISO 80000-4 §4-30) — mass of substance crossing a fixed boundary per unit time. kg/s is the universal unit in chemical, mechanical, and propulsion engineering for process material balances, combustion-stoichiometry analysis (air and fuel flow rates), turbomachinery design (compressor and turbine corrected mass flow), and rocket propulsion. Coriolis mass-flow meters per ASME PTC 19.5 and Micro Motion CMF / Endress+Hauser Promass series industrial transmitters report directly in kg/s. Reference scale: Space Shuttle main engines consumed ~512 kg/s of LH2/LOX propellant each at full thrust (3 × ~1.5 GW power equivalent); the SpaceX Raptor 2 engine ~720 kg/s; a commercial high-bypass turbofan burns ~3 kg/s of Jet A at cruise; a 100 MW gas turbine ~300 kg/s air mass flow. Convert to lb/s by dividing by 0.4536; to kg/hr by multiplying by 3,600; to lb/hr by multiplying by 7,937.
It belongs to the metric measurement system.
Kilograms per second are commonly used in chemical processing, fuel systems, and environmental monitoring.
Why Convert Pounds per second to Kilograms per second?
Converting between Pounds per second and Kilograms per second is a frequent requirement for engineers, scientists, and students working with mass flow rate 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 mass flow rate conversion is essential.
Frequently Asked Questions
How do I convert Pounds per second to Kilograms per second?
An imperial mass-flow unit (≈ 0. To convert Pounds per second to Kilograms per second, multiply by 0.453592. For example, 25 lb/s equals 11.3398 kg/s.
How many Kilograms per second are in 1 Pound per second?
There are 0.453592 Kilograms per second in 1 Pound per second.
How many Pounds per second are in 1 Kilogram per second?
There are 2.20462 Pounds per second in 1 Kilogram per second.
What is the formula for Pound per second to Kilogram per second conversion?
The formula is: multiply by 0.453592. This means 1 lb/s = 0.453592 kg/s.
Is a Pound per second bigger than a Kilogram per second?
Yes. One Pound per second is larger than one Kilogram per second because 1 lb/s equals 0.453592 kg/s, which is less than 1.
When do you need to convert between Pounds per second and Kilograms per second?
The SI unit of mass flow rate (ISO 80000-4 §4-30) — mass of substance crossing a fixed boundary per unit time. Pound per second and Kilogram per second are both mass flow 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.