Pound/Second to Kilogram/Second Converter

Mass Flow Rate Converter

9 units available

Decimals:

From

To

0.453592

1 lb/s = 0.453592 kg/s

Formula:

kg/s = lb/s × 0.45359237

With your value: 1 lb/s = 0.45359237 kg/s

Other Pound/Second to Kilogram/Second conversions

2 lb/s to kg/s 3 lb/s to kg/s 4 lb/s to kg/s 5 lb/s to kg/s 6 lb/s to kg/s 7 lb/s to kg/s 8 lb/s to kg/s

Pound/Second to Kilogram/Second Conversion Table

Pound/Second (lb/s)	Kilogram/Second (kg/s)
0.5	0.226796
1	0.453592
2	0.907185
5	2.267962
10	4.535924
15	6.803886
20	9.071847
25	11.339809
50	22.679619
100	45.359237
250	113.398093
500	226.796185
1000	453.59237

Kilogram/Second to Pound/Second Conversion Table

Kilogram/Second (kg/s)	Pound/Second (lb/s)
0.5	1.102311
1	2.204623
2	4.409245
5	11.023113
10	22.046226
15	33.069339
20	44.092452
25	55.115566
50	110.231131
100	220.462262
250	551.155655
500	1,102.311311
1000	2,204.622622

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Pound/Second (lb/s)

Mass Flow Rate

Exact conversion

Derived quantity: a defined mass divided by a defined time interval (kg/s), exact via the kilogram and the international pound.

Source: ISO 80000, Quantities and units (all parts)

International Organization for Standardization · Reviewed 2026-07-01

Kilogram/Second (kg/s)

Mass Flow Rate

Exact conversion

Derived quantity: a defined mass divided by a defined time interval (kg/s), exact via the kilogram and the international pound.

Source: ISO 80000, Quantities and units (all parts)

International Organization for Standardization · Reviewed 2026-07-01

How to Convert Pound/Second to Kilogram/Second

To convert from Pound/Second (lb/s) to Kilogram/Second (kg/s), multiply the value by 0.45359237.

Formula: kg/s = lb/s × 0.45359237

Reverse: lb/s = kg/s × 2.2046226218

Step-by-Step Example

Start with your value in Pound/Second. For example: 5 lb/s
Multiply by the conversion factor: 5 x 0.45359237
The result is: 2.267962 kg/s

About Pound/Second

The pound/second (lb/s) is a unit of mass flow rate. One pound/second equals 0.45359237 base units. UnitConvertLab converts it against every other mass flow rate unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: mass flow rate calculations, engineering and science, education.

About Kilogram/Second

The kilogram/second (kg/s) is a unit of mass flow rate. One kilogram/second equals 1 base unit. UnitConvertLab converts it against every other mass flow rate unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: mass flow rate calculations, engineering and science, education.

Frequently Asked Questions

How many Kilogram/Second are in 1 Pound/Second?

There are exactly 0.45359237 Kilogram/Second in 1 Pound/Second. This means the conversion factor from Pound/Second to Kilogram/Second is 0.45359237.

What is the formula to convert Pound/Second to Kilogram/Second?

The formula to convert Pound/Second to Kilogram/Second is: kg/s = lb/s × 0.45359237. For example, to convert 10 Pound/Second to Kilogram/Second, you would multiply 10 by 0.45359237.

What is a Pound/Second?