How to correctly calculate the volume of a refrigerator in liters: 3 methods with examples

The volume of the refrigerator in liters is a key parameter when choosing a model, but not all manufacturers indicate it honestly. Often, the characteristics indicate “useful” or “gross” volume, but the actual space for products turns out to be 15–30% less. How to avoid mistakes and accurately calculate the displacement yourself? This article will help you understand the nuances of measurements, avoid being deceived by marketers and choose a refrigerator for the real needs of your family.

We will look at three working methods of calculation - from the simplest (using tape measure and school formula) to professional (taking into account filling factors). You will also learn why volume of the freezer compartment is always considered separately, how standards EN 62552 affect measurements and what “tricks” brands use (Samsung, LG, Indesit) to inflate the numbers in the specifications. At the end of the article there is a table corresponding to the displacement of the number of people and an FAQ with answers to pressing questions.

Why is it important to know the real volume of the refrigerator

Manufacturers often manipulate numbers, indicating in the characteristics total internal volume (including shelves, drawers and even the space behind the back wall), and not useful. The difference can reach 20–40 liters! For example, a refrigerator ATLANT XM 4021-000 in the documentation has 340 liters, but after subtracting the thickness of the plastic and insulation, ~290 liters are actually available.

Consequences of incorrect choice:

• 🛒 Overpayment for “air”: models with higher displacement are more expensive, but do not provide additional space for food.
• 🥩 Storage problems: a family of 4 people needs 250–350 liters, but if you buy a 200 liter refrigerator “according to the passport”, you will have to buy a freezer camera.
• ⚡ Increased energy consumption: larger volume = higher energy consumption (even if the shelves are empty).

According to research Roskachestvo (2023), 68% of buyers complain that the actual volume of the refrigerator is less than stated. At the same time, 42% of respondents admitted that they do not know how to correctly measure displacement. This article will correct the situation.

Method 1: Calculation of volume based on external dimensions (the fastest)

If the refrigerator has not yet been purchased or you are planning a niche for a built-in model, use external dimensions. The formula is simple:

Volume (l) = Width (cm) × Depth (cm) × Height (cm) × 0.7

Coefficient 0.7 takes into account the thickness of the walls, insulation and internal elements (compressor, evaporator). For example, for a refrigerator Bosch KGN39XL30R with dimensions 60 × 65 × 201 cm:

60 × 65 × 201 × 0.7 = 548,580 cm³ ≈ 549 liters

The characteristics of this model indicate 366 l - a difference of 183 l! The fact is that the manufacturer only counts useful volume (without the freezer and technical compartments). For accuracy, use method 2 or 3.

⚠️ Attention: For built-in models (for example, Liebherr ICBN 3366) external calculation will give an error of up to 40%. They have a greater thickness of thermal insulation, and the shelves are often removable - it is better to measure the internal space.

Method 2: Measuring the internal volume taking into account the shelves

This method is more accurate, but requires access to the internal space of the refrigerator. You will need:

• 📏 Tape measure or ruler (preferably laser).
• 📝 Notepad for notes.
• 🧮 Calculator.

Algorithm of actions:

1. Remove all shelves, drawers and containers.
2. Measure internal the width, depth and height of each section (refrigerator and freezer separately).
3. Multiply the values for each sections: V = width × depth × height.
4. Add the volumes of all sections.

Example for a refrigerator Samsung RB-30 J3200SA:

The model data sheet indicates 328 liters - the difference of 36 liters is due to rounding and taking into account the thickness of the plastic parts. For domestic needs, this calculation is 90–95% accurate.

Remove all removable elements (shelves, drawers)

Measure from seal to seal

For the freezer, take into account the evaporator protrusions

Record data separately for each chamber

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Method 3: Professional calculation according to EN 62552 standard

European standard EN 62552 regulates how manufacturers must measure the volume of refrigerators. It takes into account:

• 📦 Filling factor: 70% for the refrigerator, 50% for the freezer (since products do not occupy all the space).
• 🧊 Insulation thickness: subtracted from the total volume.
• 🔄 Removable elements: shelves and drawers are considered separately.

Formula according to the standard:

Volume (l) = (W × D × H) × Fill factor - Volume of removable elements

Example for Liebherr CNef 4315:

• Dimensions of the refrigerator compartment: 54×55×130 cm = 388,050 cm³.
• Filling factor: 0.7 → 388,050 × 0.7 = 271,635 cm³ (272 l).
• Volume of shelves and drawers: ~15 l.
• Total volume: 272 – 15 = 257 l (the passport indicates 255 l).

⚠️ Attention: Some brands (for example Haier or Hisense) use their own fill factor (up to 0.85). This artificially increases the figures in the characteristics. Always check the calculation method with the seller!

How to convert cubic centimeters to liters and vice versa

1 liter is equal to 1,000 cubic centimeters (cm³). To convert cm³ to liters, divide the value by 1,000:

Volume (l) = Volume (cm³) / 1,000

Examples:

• Refrigerator with an internal volume of 350,000 cm³ → 350,000 / 1,000 = 350 liters.
• Freezer compartment 85,000 cm³ → 85,000 / 1,000 = 85 liters.

Reverse translation (liters → cm³):

Volume (cm³) = Volume (l) × 1,000

This is useful if you measure the refrigerator in inches or feet (relevant for imported models from the USA). For example, 1 cubic foot ≈ 28.32 liters. To translate, use the formula:

Volume (l) = Volume (ft³) × 28.32

Why in the USA is the volume of refrigerators indicated in cubic feet?

In the USA, the imperial system of measures has historically been used. 1 cubic foot (ft³) ≈ 0.0283 m³. Manufacturers (for example Whirlpool or GE Appliances) often indicate the volume in ft³, but for Europe they translate into liters. When purchasing imported equipment, check in which units the characteristics are given!

Table: Correspondence of refrigerator volume to the number of people

In order not to make a mistake with your choice, be guided by this table (the data are based on recommendations GOST R 51303-2013):

Please note that for freezer compartment separate standards apply:

• 🍦 For 1-2 people, 60-80 liters are enough.
• 🥓 For a family of 4 people, the volume is needed 100–150 l.
• 🐟 If you freeze food in bulk (for example, berries for the winter), take a freezer from 200 l.

Common mistakes when calculating the volume of a refrigerator

Even experienced buyers make miscalculations. Here are the most common:

1. Ignoring the freezer compartment. Many consider only the refrigerator compartment, forgetting that the freezer occupies 20–30% of the total volume. For example, in the model Indesit DF 5200 W out of 325 liters, the freezer accounts for 90 liters - this is almost a third!
2. Not taking into account removable elements. Shelves, drawers and containers “eat up” up to 10% of the space. In refrigerators with a system No Frost (for example, Electrolux ENN 2853 AOW), an additional 5–7% is spent on ventilation.
3. Trust in the “total” volume. Manufacturers can indicate the dimensions without deduction wall thickness. For example, the specifications are 360 ​​liters, but the actual usable volume is 310 liters. Gorenje NRK 6191 WH the specifications are 360 ​​liters, but the actual usable volume is 310 liters.
4. Forget about the door shelves. They also take up space! On average, the door compartments account for 15–20 liters (in models with a water dispenser - up to 30 liters).

To avoid mistakes, always:

• 🔍 Check exactly what volume is indicated in the passport (gross, net or useful).
• 📏 Measure the internal space yourself (method 2).
• 🤔 Multiply the declared volume by 0.85 - this will bring the figure closer to reality.

⚠️ Attention: In refrigerators with freshness zones (for example, BioFresh in models Liebherr) the volume of these compartments are taken into account separately. They occupy 20–40 liters, but are not suitable for freezing or long-term storage.

FAQ: Answers to frequently asked questions

Can you trust the volume indicated on the refrigerator sticker?

No, not always. Manufacturers often indicate total internal volume (including insulation and technical voids). The actual usable volume is 10–30% less. For example, on the sticker BEKO GNE 114620 X it says 325 liters, but after subtracting shelves and ventilation, it remains ~280 liters. For accuracy, use method 2 (measurement of internal volume). space).

How to calculate the volume of a built-in refrigerator?

Built-in models (for example, Siemens KI86SAF30R) have thick thermal insulation, so external calculation (method 1) will give an error of up to 40%. Better:

1. Measure internal dimensions of the niche where the equipment will be built.
2. Subtract 5-7 cm on each side for ventilation and fastenings.
3. Use formula: (W – 10) × (D – 10) × (H – 10) × 0.7.

For Liebherr ICBS 3366 with external dimensions 56×55×177 cm, the actual internal volume will be ~280 l (indicated in the passport 272 l).

Why are there two volumes in the characteristics of a refrigerator: refrigerator and freezer?

This is due to different temperature zones and storage standards:

• 🥬 Refrigerator compartment (+2°...+8°C) - for fresh products (dairy products, vegetables, sausages).
• ❄️ Freezer chamber (–18°C and below) - for long-term storage (meat, fish, semi-finished products).

The volumes are counted separately, since they are not interchangeable. For example, in Samsung RB-37 J5240SA the refrigerator compartment is 231 liters, and the freezer is 114 liters. In total, this is 345 liters, but you cannot use the freezer to cool drinks.

How much refrigerator volume is needed? for a family of 3 people?

The optimal range is 250–320 liters, of which:

• 🥛 Refrigerator compartment: 200–250 liters (for food for the week).
• 🍧 Freezer compartment: 50–70 l (for freezing for 1–2 months).

Examples of suitable models:

• ATLANT XM 4021-000 (340 l, of which freezer 105 l).
• Indesit DF 5200 W (325 l, freezer 90 l).
• LG GA-B409 SLGL (303 l, freezer 85 l).

If you often buy food for future use or cook for several days, take a model for 350–400 l.

Is it possible to increase the useful volume of the refrigerator?

Yes, but with reservations:

• 🔄 Rearrange the shelves. In most models (Bosch, Siemens), the height of the shelves can be adjusted. For example, by removing one shelf, you will free up 10-15 liters for tall ones. bottles.
• 🧺 Use organizers. Egg containers, stands for cans and baskets for vegetables save up to 20% of space.
• ❄️ Defrost the freezer. Ice on the walls “eats” up to 10 liters of volume. Defrost the chamber once every 6 months.

⚠️ Do not remove all shelves - this will disrupt air circulation and lead to uneven cooling.