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kW to m³/h Calculator
Convert heat input in kilowatts (kW) to gas flow rate in cubic metres per hour (m³/h). Essential for gas pipe sizing, meter selection, and appliance commissioning.
kW to m³/h Conversion
To convert heat input (kW) to gas flow rate (m³/h): m³/h = kW × 3.6 ÷ Calorific Value (MJ/m³). For UK natural gas with a CV of 38.7 MJ/m³, 30 kW = 2.79 m³/h.
This conversion is used to size gas pipes and select the correct gas meter for an installation.
Frequently Asked Questions
How much gas does a 30 kW boiler use?
A 30 kW boiler uses approximately 2.79 m³/h of natural gas (at 38.7 MJ/m³ CV). At full load, this is about 0.28 m³ per 6-minute meter clock.
What size gas meter do I need?
Gas meters are rated by maximum flow rate (m³/h). Common domestic meters (U6) handle up to 6 m³/h. For larger loads, use U16 or U25 meters. Size the meter based on the total connected load.
kW to m³/h Calculator
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