How to Measure for the Perfect Toilet Seat Fit

Choosing between a round or elongated toilet seat is simpler than you think. Follow these steps to ensure a seamless upgrade:

Step 1: Identify Your Bowl Shape

Round vs. Elongated:

• Round: ~16.5” long (compact, ideal for small bathrooms)
• Elongated: ~18.5” long (extra comfort, common in modern homes)

Visual Check:

• Stand over the bowl. Elongated bowls have an oval shape; round bowls are circular.

Step 2: Measure Like a Pro

Tools Needed: Tape measure, smartphone (to snap reference photos).

1. Mounting Hole Distance:
   • Measure between the centers of the two rear bolt holes.
   • Standard spacing: 5.5 inches.
2. Bowl Length:
   • Place the tape’s hook at the midpoint between the bolt holes.
   • Stretch it to the front edge of the bowl.
   • Round: ~16.5” | Elongated: ~18.5”

Step 3: Double-Check & Confirm

• Measure twice to avoid ordering errors.
• Still unsure? Use SmartToiletPro’s Shape Match Tool – upload a photo of your bowl for instant analysis.

Why Size Matters

• Safety: Ill-fitting seats shift, causing instability.
• Hygiene: Gaps trap bacteria.
• Comfort: Proper support prevents strain.

SmartToiletPro’s Universal Fit Promise

All seats include:

• Adjustable SecureFit Hinges: Compatible with 95% of bowls.
• No-Slip Bumpers: Prevent movement, even if measurements vary slightly.
• EasyReturns: Wrong size? Free exchanges within 30 days.

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Pro Tips

• Rental Homes: Note measurements for future replacements.
• Design Flexibility: Mix materials – pair elongated wood seats in master baths with round plastic seats in powder rooms.

Need Help?
Contact SmartToiletPro’s support team via live chat – no phone calls needed!

Key Takeaways:

• Measure bolt spacing and bowl length.
• Round = ~16.5”, Elongated = ~18.5”.
• SmartToiletPro seats fit most brands (Kohler, TOTO, etc.).