Fire Extinguisher Calculator

Safesmart Health and Safety Software & Services

Safesmart provides fire and health & safety risk assessments, consultancy and site/business management tools through Smartlog – our online training software. We also provide servicing for fire equipment: extinguishers, alarms, fire doors, and emergency lights.

Portable fire extinguishers are the most common type of fire fighting equipment to be found in commercial and industrial premises. However in order to be compliant, the overall number of extinguishers you require is dependant upon the size of your premises.

The fire extinguisher calculator is a tool designed to work out how many extinguishers your workplace requires by area, to comply with legislation.

Use our free fire extinguisher calculator below to determine how many extinguishers you need:

Approximate floor area (m²):

Disclaimer: This calculator is only to be used as guidance and does not provide the definitive answer.

The fire rating is found by multiplying the floor area in metres squared (m²) by 0.065. Therefore for a floor area of 200m² the fire rating is 200 x 0.065 = 13A.

A 9 litre water extinguisher has a fire rating of 13A therefore one 9 litre water extinguisher will be required for every 200m² of floor area.

For special risks such as fires involving live electrical equipment, a suitable extinguisher should be provided – carbon dioxide or dry powder, within close distance of the risk (or at least within 30m) usually placed next to the water extinguishers required.

Safesmart provides fire equipment servicing, maintenance, installation and fire extinguisher/fire warden training. Please contact us for a quick quote using the contact form at the bottom of the page.


Need a quote?

If you would like a quote for our solutions, please fill out this form and a member of the team will contact you to discuss your requirements

Alternatively, please use the details below to contact us:

Phone our offices on: 01908 320152 or 08701 273999

You can also email us directly to:

Smartlog Info