Estimate refrigerator capacity from width, depth, and height in inches. Use it to compare fridge sizes, decode older appliances, plan a replacement, or translate cubic feet into liters and gallons.
Width
30 in
Depth
30 in
Height
66 in
Example refrigerator capacity
34.38 cu ft
A 30 × 30 × 66 inch box equals 34.38 cubic feet before interior-space adjustments.
Enter refrigerator dimensions in inches.
Use 70-85% when dimensions are outside measurements or include bins, shelves, compressor space, and door shape.
Common refrigerator presets
Capacity
Formula: width × depth × height ÷ 1,728. Use inside cavity dimensions for the cleanest capacity estimate.
Usable estimate
26.81 cu ft
Liters
973.39 L
Cubic meters
0.97 m³
Gallons
257.14 gal
Household fit estimate
4-7 people
Based on a rough 4-6 usable cubic feet per person. Shopping frequency, freezer share, and meal prep habits can change this number.
Measure width, depth, and height in inches. If you can safely measure the inside cavity, use those numbers for the most realistic storage estimate.
Refrigerator cubic feet = width (in) × depth (in) × height (in) ÷ 1,728
Use the adjustment field when measurements are outside dimensions or when shelves, drawers, an icemaker, door bins, or a compressor area reduce practical storage.
For daily groceries, start around 4-6 usable cubic feet per person, then size up for bulk shopping, meal prep, large produce bins, or extra freezer space.
Use these reference points to compare compact, apartment, and family-size refrigerators.
24 in × 28 in × 60 in
23.33 cu ft
19.13 cu ft usable · 660.73 L
A compact full-height unit for smaller kitchens and rentals.
30 in × 30 in × 66 in
34.38 cu ft
26.81 cu ft usable · 973.39 L
A common family format with straightforward shelf layout.
36 in × 34 in × 70 in
49.58 cu ft
36.69 cu ft usable · 1,404.04 L
A wider layout with more bins, drawers, and door storage.
Estimate the capacity of an existing unit before shopping so a new model does not feel smaller after bins, shelves, and freezer space are considered.
Older refrigerators may not show capacity on the label. Measuring the cavity gives a practical estimate for listings, resale, and planning.
A rough rule is 4-6 usable cubic feet per person, then adjust for bulk shopping, meal prep, freezer habits, and how often groceries are restocked.
Capacity tells you storage size, while outside dimensions still decide whether the refrigerator fits through doors, around corners, and into the cabinet opening.
Practical notes for measuring refrigerator capacity without overestimating usable storage.
Multiply width, depth, and height in inches, then divide by 1,728. For example, 30 × 30 × 66 ÷ 1,728 = 34.38 cubic feet before subtracting shelves, bins, walls, and mechanical space.
Measure the inside storage cavity when possible. Outside measurements include insulation, panels, doors, handles, and compressor space, so they usually overstate usable food storage.
A simple rectangular calculation does not know about curved liners, shelves, drawers, door bins, the freezer split, icemakers, vents, and compressor space. Use the usable percent field to reduce the raw estimate.
A practical planning range is about 4-6 usable cubic feet per person. A 1-2 person household may be comfortable around 10-14 usable cubic feet, while a larger family may prefer 18+ usable cubic feet.
From cubic meters to cubic feet, compare volumes quickly with clear formulas and fast results.