What size refrigerator do you need?

Tell us who eats at home and how you shop. FridgeFit works out the capacity you need, how to split it between fridge and freezer, which style suits your kitchen opening and roughly what it will cost to run.

1Your household

2Freezer & space

Optional. Measure the space between cabinets and from the wall to the front edge of the countertop.
–
Recommended total capacity
–Fresh food
–Freezer
–Best style
–Energy per year
Add your opening size to check what fits.

Choosing the right refrigerator size

Refrigerator capacity is measured in cubic feet (cu ft) in the US and in liters elsewhere (1 cu ft ≈ 28.3 L). A common guideline is about 4–6 cubic feet of fresh-food space per adult, plus room for the freezer. In practice, how you live matters as much as how many people live with you: a family that cooks every night and shops once every two weeks needs much more space than a couple who eat out most evenings.

How FridgeFit calculates capacity

We start with a base of 8 cu ft for the essentials every kitchen keeps (condiments, milk, eggs, butter), then add about 4.5 cu ft per adult or teen and 3 cu ft per young child. That figure is adjusted up or down for how often you cook, how often you shop, bulk buying, entertaining and drinks. Finally, the total is split between fresh food and freezer according to your freezer needs. Most refrigerators devote roughly 28–35% of their capacity to the freezer.

Typical sizes by household

HouseholdTypical capacityUsual style
1 person10–14 cu ft (280–400 L)Apartment-size or top-freezer
2 people14–19 cu ft (400–540 L)Top-freezer or bottom-freezer
3–4 people19–25 cu ft (540–710 L)Bottom-freezer or French door
5+ people25 cu ft and up (710 L+)Large French door or side-by-side, sometimes plus a freezer

Refrigerator styles compared

Top-freezer

Most affordable and usually the most energy-efficient per cubic foot. Narrow models fit 28–30 in openings.

Bottom-freezer

Fresh food at eye level, freezer drawer below. A good middle ground for couples and small families.

French door

Two narrow doors above a freezer drawer. Wide shelves for platters; needs less door-swing space. Uses more energy.

Side-by-side

Tall, narrow freezer on one side. Good freezer access, but shelves are narrow – pizza boxes and platters may not fit.

Counter-depth

Sits nearly flush with cabinets for a built-in look, but holds about 15–20% less than a standard-depth model of the same width.

Compact / apartment

24 in wide or less. Ideal for studios, offices and small kitchens, typically 10–13 cu ft.

Measuring your space correctly

  • Width: measure the opening between cabinets or walls at the top, middle and bottom, and use the smallest value. Leave about 1/8 in (3 mm) on each side.
  • Height: measure from the floor to the underside of the overhead cabinet. Leave about 1 in (2.5 cm) above the hinges or top of the fridge for airflow.
  • Depth: measure from the back wall to the front edge of the countertop. Standard-depth fridges usually stick out 4–8 in past the counter, while counter-depth models (about 24–25 in deep without doors) sit nearly flush. Leave 1–2 in behind the fridge for the power cord, water line and ventilation.
  • Doors and route: check that the doors can open at least 90° (more if the fridge sits next to a wall) so the crisper drawers can come out, and measure every doorway and hallway on the way into the kitchen.

Energy use and bigger fridges

A modern ENERGY STAR® certified refrigerator of 18–25 cu ft typically uses about 350–600 kWh per year. Larger capacity, French-door layouts, through-the-door ice and water dispensers and a hot garage location all increase consumption. The calculator gives a rough estimate; the yellow EnergyGuide label on each model shows its tested annual kWh, which is the number to compare.

FAQ

What size fridge does a family of 4 need?

Most families of four are comfortable with 20–25 cu ft (570–710 L). Families who cook every day, buy in bulk or keep lots of drinks should lean toward the upper end, or add a separate freezer.

Is a 20 cubic foot fridge big enough?

For two to four people with average habits, yes. It typically gives about 14 cu ft of fresh-food space and 6 cu ft of freezer space.

Should I choose counter-depth?

Choose counter-depth if your kitchen is tight or you want a built-in look, and accept roughly 15–20% less capacity. If storage matters more than looks, a standard-depth model of the same width holds more for less money.

How much space should I leave around a fridge?

About 1/8 in on each side, 1 in on top and 1–2 in behind, unless the manufacturer’s installation guide says otherwise. Some models need more for ventilation.

Is it bad to have a fridge that is too big?

An oversized fridge costs more to buy and run, takes floor space and makes it easier to forget food at the back. An almost-empty fridge also works slightly harder each time the door opens. Buy for your real needs plus a small margin.

How do I convert cubic feet to liters?

Multiply by 28.3. For example, 20 cu ft ≈ 566 L. European manufacturers often list net (usable) capacity, which can be 5–10% lower than gross capacity.