We have been dealing with lubricant’s and fuel for a long time. Best quality within best rates. Top rated oil supplier in Uk.
Measurement | Tank Capacity | Tank Contents |
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Litres | 0L | 0L |
m3 | 0m3 | 0m3 |
Gallons (UK) | 0 gal | 0 gal |
Gallons (US) | 0 gal | 0 gal |
Barrels | 0 barrels | 0 barrels |
ft3 | 0ft3 | 0ft3 |
Calculation Results (Approximate) |
Finding the right tank size is essential for efficient fuel storage. Whether you need a heating oil tank for your home, a diesel tank for your farm, or a bulk fuel tank for industrial use, our free online tank size calculator helps you work it out in minutes. Simply enter your tank’s dimensions, choose the shape, and get instant results in multiple units.
At 123 Oil, we’ve designed this tool to make fuel planning simple — no guesswork, just quick, accurate answers.
Our calculator works for three common tank shapes:
Follow these steps:
Our calculator accepts a wide range of input and output units for flexibility:
Trusted by many, 123 Oil is a one-stop shop for all the fuel needs of your business. From emergency fuel supply to fuel polishing and tank installation, we provide expert services to the domestic, industrial, and commercial sectors.
We are also offering priority fuel contracts so that you don’t have to worry about fuel shortages again.
Choosing the right tank size has practical benefits:
We offer round-the-clock fuel delivery to prevent any downtime.
You can get your fuel delivered to your location within the same day.
We are proud to be a carbon-neutral organisation as per ISO 14068-1.
We have over 50 years of industry experience in reliable fuel services.
Most domestic oil tanks range from 500 to 2,500 litres. The most common size in the UK is 1,000–1,500 litres.
Yes – it works for oil, diesel, water, chemicals, or any liquid stored in cylindrical or rectangular tanks.
You can usually find dimensions in your tank’s manual, or measure the diameter, height, or length with a tape measure.
Consider your fuel usage, number of occupants or equipment, available space, and delivery frequency. Our calculator gives a quick capacity estimate to guide your decision.
1,000–1,200 litre tanks are the most widely used for domestic heating oil storage.
At 123 Oil, we don’t just supply heating oil, diesel, and red diesel nationwide — we also provide tank installation, cleaning, replacement, and fuel management services. Whether you’re a homeowner, farmer, or industrial operator, we’ll help you choose the right tank and keep your fuel supply running smoothly.
Our nationwide fuel supply service means that 123 Oil offer fast and reliable delivery (normally next working day) wherever you are in the country.
Trustindex verifies that the original source of the review is Google. Brilliant service, always go above and beyond to help their customers.Blake Sabatowski2025-05-24Trustindex verifies that the original source of the review is Google. Excellent service, I would recommend to everyone, arrived on time and was very competitive price.arni vations2025-04-04Trustindex verifies that the original source of the review is Google. Great service, delivered on time - will definitely use 123 oil’s again.👍Steve Boydon2025-03-29Trustindex verifies that the original source of the review is Google. Another save! Matt got out to me straight away and even re bled my boiler again. Fantastic friendly quick and reliable service as alwaysRichard Smith2025-03-28Trustindex verifies that the original source of the review is Google. Matthew has been out to me a couple of times now, first time for a emergency. Always kind courteous and on time, far better service than I've received from some of the competitors, cheaper too which is a nice bonus!! Cannot recommend highly enoughBruce2025-03-27Trustindex verifies that the original source of the review is Google. Matthew came out really quickly and supplied me with oil.He also started my boiler and made sure it was running before he left.Excellent serviceSimon Smith2025-03-01Trustindex verifies that the original source of the review is Google. Wow. Fab service as first time having our oil tank filled, I didn’t have a clue what to expect. Nick was great, explained everything to me, very friendly , very helpful. Very speedy delivery!! It was very straight forward to fill the tank. Really happy thanks guys.Jem2024-11-22Trustindex verifies that the original source of the review is Google. Great lads. We arranged for a delivery in the week. They turned up on time and delivered our fuel efficiently and quickly. No spillages and no mess. We will definitely use them again. Highly recommended . Thank you. From narrowboat kerrygold.steven buckland2024-10-15
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