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Convert Kilograms per second to Grams per second

Instantly convert Kilograms per second (kg/s) to Grams per second (g/s) with our free online calculator.

Reviewed by Christopher FloiedUpdated

Formula: kg/s to g/smultiply by 1000

Reference Table

Kilograms per second (kg/s)Grams per second (g/s)
11000
55000
1010000
2525000
5050000
100100000

How to Convert Kilograms per second to Grams per second

Formula

To convert Kilograms per second (kg/s) to Grams per second (g/s): multiply by 1000

Step-by-Step

  1. Start with your value in Kilograms per second (kg/s).
  2. Multiply by 1000 to perform the conversion.
  3. The result is your value expressed in Grams per second (g/s).

Conversion Factor

1 kg/s = 1000 g/s

Reverse Factor

1 g/s = 0.001 kg/s

Worked Example

Convert 25 Kilograms per second to Grams per second: 25 kg/s = 25000 g/s

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.

About Gram per second (g/s)

A metric mass-flow unit equal to exactly 10⁻³ kg/s. g/s is the working unit for small-scale and instrumentation-grade mass-flow measurement applications: automotive Mass Air Flow (MAF) sensor output (typical idle 2-4 g/s, cruise 10-30 g/s, wide-open-throttle on a 3.5 L V6 ~100-180 g/s), engine-management data-logging (HP Tuners, EFILive, Cobb AccessPort, OpenECU all report MAF in g/s for North American vehicles), automotive dyno-tuning and powertrain calibration software, OBD-II Mode 01 PID 0x10 (MAF rate) which is defined as g/s per SAE J1979 and ISO 15031-5, laboratory fuel-injector flow-bench measurement using SAE J1832 procedures, medical respiratory-gas delivery (HFNC high-flow nasal cannula 60-120 g/s of warmed/humidified air-O₂ mix per AARC Clinical Practice Guidelines), small-scale chemical-process dosing (Bronkhorst / Sensirion / Honeywell mass-flow controllers commonly used in semiconductor fabs and pharmaceutical manufacturing), and analytical-instrument carrier-gas flows. Convert g/s to kg/s by dividing by 1,000; to lb/min by multiplying by 0.1323; to kg/hr by multiplying by 3.6.

Quick Facts

  • 1 Kilogram per second equals 1000 Grams per second
  • 1 Gram per second equals 0.001 Kilograms per second
  • Kilogram per second is a unit of mass flow rate
  • Gram per second is a unit of mass flow rate
  • This conversion is commonly used in chemical processing, fuel systems, and environmental monitoring
  • The Kilogram per second belongs to the metric system

Common Kilogram per second to Gram per second Conversions

Kilograms per second (kg/s)Grams per second (g/s)
0.0110
0.1100
0.25250
0.5500
11000
22000
33000
55000
1010000
1515000
2020000
2525000
5050000
7575000
100100000
250250000
500500000
10001000000
50005000000
1000010000000

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.

Understanding Grams per second

The Gram per second (symbol: g/s) is a unit of mass flow rate. A metric mass-flow unit equal to exactly 10⁻³ kg/s. g/s is the working unit for small-scale and instrumentation-grade mass-flow measurement applications: automotive Mass Air Flow (MAF) sensor output (typical idle 2-4 g/s, cruise 10-30 g/s, wide-open-throttle on a 3.5 L V6 ~100-180 g/s), engine-management data-logging (HP Tuners, EFILive, Cobb AccessPort, OpenECU all report MAF in g/s for North American vehicles), automotive dyno-tuning and powertrain calibration software, OBD-II Mode 01 PID 0x10 (MAF rate) which is defined as g/s per SAE J1979 and ISO 15031-5, laboratory fuel-injector flow-bench measurement using SAE J1832 procedures, medical respiratory-gas delivery (HFNC high-flow nasal cannula 60-120 g/s of warmed/humidified air-O₂ mix per AARC Clinical Practice Guidelines), small-scale chemical-process dosing (Bronkhorst / Sensirion / Honeywell mass-flow controllers commonly used in semiconductor fabs and pharmaceutical manufacturing), and analytical-instrument carrier-gas flows. Convert g/s to kg/s by dividing by 1,000; to lb/min by multiplying by 0.1323; to kg/hr by multiplying by 3.6.

It belongs to the metric measurement system.

Grams per second are commonly used in chemical processing, fuel systems, and environmental monitoring.

Why Convert Kilograms per second to Grams per second?

Converting between Kilograms per second and Grams 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 Kilograms per second to Grams per second?

The SI unit of mass flow rate (ISO 80000-4 §4-30) — mass of substance crossing a fixed boundary per unit time. To convert Kilograms per second to Grams per second, multiply by 1000. For example, 25 kg/s equals 25000 g/s.

How many Grams per second are in 1 Kilogram per second?

There are 1000 Grams per second in 1 Kilogram per second.

How many Kilograms per second are in 1 Gram per second?

There are 0.001 Kilograms per second in 1 Gram per second.

What is the formula for Kilogram per second to Gram per second conversion?

The formula is: multiply by 1000. This means 1 kg/s = 1000 g/s.

Is a Kilogram per second bigger than a Gram per second?

No. One Kilogram per second is smaller than one Gram per second because 1 kg/s equals 1000 g/s, which is greater than 1.

When do you need to convert between Kilograms per second and Grams per second?

A metric mass-flow unit equal to exactly 10⁻³ kg/s. Kilogram per second and Gram 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.

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