How to Choose the Right Standard Bathtub Size
The most common bathtub size is 60 inches long, 30 inches wide, and 14–16 inches high. This size usually refers to an alcove tub, the type most often built into three walls with a finished front (apron). But not all tubs follow this rule—many styles vary depending on function, space, and design.
| Type of Tub | Length | Width | Height/Depth |
|---|---|---|---|
| Alcove | 54–60 in | 30–32 in | 15 in |
| Soaker | 60–72 in | 30–40 in | 20–24 in |
| Freestanding | 55–72 in | 27–32 in | 15–20 in |
| Drop-in | 45–72 in | 30–32 in | 14–20 in |
| Oversized | 72 in | 40 in | 32–38 in |
| Whirlpool | 60–72 in | 32–36 in | 18–23 in |
| Oval | 60 in | 41 in | 24 in |
| Corner | 60 in x 60 in | — | 22 in |
| Long | 72 in | 36 in | 20 in |
Choose your bathtub based on space, comfort, and style. For smaller bathrooms, alcove and drop-in tubs are the most practical. In larger spaces, freestanding, corner, or oval tubs offer more design freedom and comfort.
Quick tips: Leave 24 inches of open space in front of the tub and 12 inches between the tub and nearby fixtures. Aim for at least 15 inches of soaking depth for everyday comfort.
If relaxation is a priority, look for tubs that are at least 20 inches deep for a proper soak. Style also matters, whether you prefer a traditional clawfoot or a modern sculpted tub, the right design should enhance your bathroom’s overall look.
Minimum Bathroom Space Needed per Tub Type
| Tub Type | Recommended Bathroom Size |
|---|---|
| Alcove | 5 ft x 7 ft |
| Drop-in | 6 ft x 8 ft |
| Freestanding | 6 ft x 9 ft |
| Corner | 6.5 ft x 6.5 ft |
| Oversized | 7 ft x 10 ft or more |
Installation and Practical Considerations
- Drain placement matters- check if the tub is left, right, or center-drain to match existing plumbing.
- Floor reinforcement may be needed for cast iron, freestanding, or oversized tubs due to weight when filled with water.
- Drop-in tubs require custom-built decks, so factor in extra space and tile work.