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Convert Cubic meters per hour to Liters per second

Instantly convert Cubic meters per hour (m³/hr) to Liters per second (L/s) with our free online calculator.

Reviewed by Christopher FloiedUpdated

Formula: m³/hr to L/smultiply by 0.277778

Reference Table

Cubic meters per hour (m³/hr)Liters per second (L/s)
10.277778
51.38889
102.77778
256.94444
5013.8889
10027.7778

How to Convert Cubic meters per hour to Liters per second

Formula

To convert Cubic meters per hour (m³/hr) to Liters per second (L/s): multiply by 0.277778

Step-by-Step

  1. Start with your value in Cubic meters per hour (m³/hr).
  2. Multiply by 0.277778 to perform the conversion.
  3. The result is your value expressed in Liters per second (L/s).

Conversion Factor

1 m³/hr = 0.277778 L/s

Reverse Factor

1 L/s = 3.6 m³/hr

Worked Example

Convert 25 Cubic meters per hour to Liters per second: 25 m³/hr = 6.94444 L/s

About Cubic meter per hour (m³/hr)

A metric flow-rate unit equal to exactly 1/3,600 m³/s. m³/hr is the de-facto standard unit for industrial process flows in metric countries, HVAC air handling (DIN EN 16798 / ASHRAE 62.1 ventilation calcs), pump sizing in European pump curves (KSB, Grundfos, Wilo specifications), natural-gas metering and the gas grid balance reports (TSO data is in Mm³/hr), municipal water-treatment plant capacity, and biogas/anaerobic-digester output. European building-code minimum air-exchange rates (e.g., German DIN 1946 fresh-air requirements per occupant) and Eurovent-certified fan-coil ratings are almost always expressed in m³/hr. Practical reference: a typical residential heat-recovery ventilation unit moves 100-400 m³/hr; an industrial centrifugal pump might be rated at 50-5,000 m³/hr. Convert to GPM by multiplying by 4.403, to CFM by multiplying by 0.5886, to L/s by dividing by 3.6.

About Liter per second (L/s)

A metric flow-rate unit equal to exactly 0.001 m³/s. L/s is the typical unit for plumbing fixtures in metric-using countries, the SI-aligned sizing unit for water-supply mains (per ISO 4064 water meter specs and EN 805 European water-supply standard), fire-pump capacities (often dual-listed in L/s and m³/hr on European fire-rated pumps), and medium-flow industrial processes. Reference values: a typical kitchen faucet flows 0.1-0.15 L/s, a metric shower head 0.13-0.20 L/s, a 50 mm domestic-water service ~3-5 L/s, a 100 mm fire-hydrant supply main 30-60 L/s. Converting L/s to GPM (US gallons per minute) is multiply by 15.85 — one of the most-needed unit conversions for buyers of imported European pump/plumbing equipment specifying performance in metric units. 1 L/s = 60 L/min = 3.6 m³/hr.

Quick Facts

  • 1 Cubic meter per hour equals 0.277778 Liters per second
  • 1 Liter per second equals 3.6 Cubic meters per hour
  • Cubic meter per hour is a unit of volumetric flow rate
  • Liter per second is a unit of volumetric flow rate
  • This conversion is commonly used in plumbing, HVAC systems, and chemical process engineering
  • The Cubic meter per hour belongs to the metric system

Common Cubic meter per hour to Liter per second Conversions

Cubic meters per hour (m³/hr)Liters per second (L/s)
0.010.00277778
0.10.0277778
0.250.0694444
0.50.138889
10.277778
20.555556
30.833333
51.38889
102.77778
154.16667
205.55556
256.94444
5013.8889
7520.8333
10027.7778
25069.4444
500138.889
1000277.778
50001388.89
100002777.78

Understanding Cubic meters per hour

The Cubic meter per hour (symbol: m³/hr) is a unit of volumetric flow rate. A metric flow-rate unit equal to exactly 1/3,600 m³/s. m³/hr is the de-facto standard unit for industrial process flows in metric countries, HVAC air handling (DIN EN 16798 / ASHRAE 62.1 ventilation calcs), pump sizing in European pump curves (KSB, Grundfos, Wilo specifications), natural-gas metering and the gas grid balance reports (TSO data is in Mm³/hr), municipal water-treatment plant capacity, and biogas/anaerobic-digester output. European building-code minimum air-exchange rates (e.g., German DIN 1946 fresh-air requirements per occupant) and Eurovent-certified fan-coil ratings are almost always expressed in m³/hr. Practical reference: a typical residential heat-recovery ventilation unit moves 100-400 m³/hr; an industrial centrifugal pump might be rated at 50-5,000 m³/hr. Convert to GPM by multiplying by 4.403, to CFM by multiplying by 0.5886, to L/s by dividing by 3.6.

It belongs to the metric measurement system.

Cubic meters per hour are commonly used in plumbing, HVAC systems, and chemical process engineering.

Understanding Liters per second

The Liter per second (symbol: L/s) is a unit of volumetric flow rate. A metric flow-rate unit equal to exactly 0.001 m³/s. L/s is the typical unit for plumbing fixtures in metric-using countries, the SI-aligned sizing unit for water-supply mains (per ISO 4064 water meter specs and EN 805 European water-supply standard), fire-pump capacities (often dual-listed in L/s and m³/hr on European fire-rated pumps), and medium-flow industrial processes. Reference values: a typical kitchen faucet flows 0.1-0.15 L/s, a metric shower head 0.13-0.20 L/s, a 50 mm domestic-water service ~3-5 L/s, a 100 mm fire-hydrant supply main 30-60 L/s. Converting L/s to GPM (US gallons per minute) is multiply by 15.85 — one of the most-needed unit conversions for buyers of imported European pump/plumbing equipment specifying performance in metric units. 1 L/s = 60 L/min = 3.6 m³/hr.

It belongs to the metric measurement system.

Liters per second are commonly used in plumbing, HVAC systems, and chemical process engineering.

Why Convert Cubic meters per hour to Liters per second?

Converting between Cubic meters per hour and Liters per second is a frequent requirement for engineers, scientists, and students working with volumetric 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 volumetric flow rate conversion is essential.

Frequently Asked Questions

How do I convert Cubic meters per hour to Liters per second?

A metric flow-rate unit equal to exactly 1/3,600 m³/s. To convert Cubic meters per hour to Liters per second, multiply by 0.277778. For example, 25 m³/hr equals 6.94444 L/s.

How many Liters per second are in 1 Cubic meter per hour?

There are 0.277778 Liters per second in 1 Cubic meter per hour.

How many Cubic meters per hour are in 1 Liter per second?

There are 3.6 Cubic meters per hour in 1 Liter per second.

What is the formula for Cubic meter per hour to Liter per second conversion?

The formula is: multiply by 0.277778. This means 1 m³/hr = 0.277778 L/s.

Is a Cubic meter per hour bigger than a Liter per second?

Yes. One Cubic meter per hour is larger than one Liter per second because 1 m³/hr equals 0.277778 L/s, which is less than 1.

When do you need to convert between Cubic meters per hour and Liters per second?

A metric flow-rate unit equal to exactly 0. Cubic meter per hour and Liter per second are both volumetric 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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