How to Compare Refrigerator Capacity: What the Litre Numbers Actually Mean
When you are shopping for a fridge, you will see capacity numbers like 400L, 520L or 619L. But what do these numbers actually tell you, and how do you find the right size for your household? This guide breaks it down simply.
What Does the Litre Capacity Measure?
The litre figure on a refrigerator specification sheet is the total gross volume of the appliance — or in some cases, the net usable volume. This distinction matters.
- Gross volume: The total internal volume including any space taken up by shelves, drawers, door compartments and mechanical components
- Net usable volume: The actual usable space for food storage after accounting for internal structures
Different manufacturers measure differently. Some publish gross volume, others net. This means a 500L fridge from Brand A may not have the same usable food storage space as a 500L fridge from Brand B.
Practical takeaway: Do not rely solely on the number. Look at the shelf layout, number and depth of drawers, and door compartment size when comparing models.
How Much Capacity Do You Need?
As a general guide for Australian households:
| Household Size | Recommended Capacity |
|---|---|
| 1–2 people | 200–300 litres |
| 2–3 people | 300–400 litres |
| 3–4 people | 380–500 litres |
| 4–5 people | 450–600 litres |
| 6+ people or large families | 600+ litres |
These are starting points. If your household shops in bulk, buys large quantities of fresh produce, or cooks in advance and stores leftovers frequently, go toward the higher end of your range.
Fridge to Freezer Ratio
Many people overlook the split between fridge space and freezer space. A fridge described as "500L" might have 350L of fridge space and 150L of freezer, or 400L of fridge and 100L of freezer.
For families that freeze meat, batch cook or buy frozen food in bulk, more freezer space matters. French door and bottom mount fridges often offer larger freezer compartments than top mount models at the same total capacity.
Fridge Type and Usable Space
| Fridge Type | Usable Space Notes |
|---|---|
| Top mount | Fridge on bottom, freezer on top. Practical layout for everyday use. Most affordable. |
| Bottom mount | Fridge on top, freezer in drawers below. Fridge at eye level, easier to access daily items. |
| French door | Wide fridge compartment at top, freezer drawers below. Best for families buying in bulk. Very wide shelves accommodate platters and large items. |
| Side-by-side | Fridge and freezer side by side. Tall and narrow compartments. Poor for wide items. Suits narrow kitchens where door swing space is limited. |
Measuring for the Space
Always measure the opening in your kitchen before purchasing:
- Width of the cavity or space
- Height from floor to overhead cabinet or ceiling
- Depth from the wall to the front of the bench (most fridges need a few cm gap at the back)
- Door swing clearance — especially for French door models with wide panels
Find the Right Size Fridge at Oceania Appliances
At our Wetherill Park showroom, we stock quality secondhand fridges from 200L to 600L+ across all major brands. Our team can help you find the right capacity and layout for your household and kitchen space. Free delivery across Sydney, 3–6 month warranty on every fridge. Open 7 days, 10 am to 8 pm.