How to Replace a Toilet Seat

The toilet is sometimes the best seat in the house. You can have the most comfortable recliners in the world peppering your living room, but at the end of the day, it’s the toilet you can’t live without.

So it’s good to know how to do simple repairs, such as replacing the seat if it’s cracked or unsightly. It’s a relatively easy task that will only take you a few minutes.

How to Replace a Toilet Seat  in 5 Steps

Before getting started, make sure you have all of the materials you’ll need handy.


  • Measuring tape
  • New toilet seat
  • Screwdriver
  • Pliers
  • Penetrating fluid (if you have an older toilet)


Step 1. Take Measurements of Your Toilet

Before shopping for a new toilet seat, measure your toilet (some are round, while others are elongated). Write down measurements for both length and width. To do this properly, measure the distance from the midpoint between the two bolts holding the toilet seat, to the front rim of the seat: 16 ½ inches requires a round seat. Elongated seats are 18 ½ inches.

Step 2. Purchase New Toilet Seat

Purchase a new seat that matches your toilet’s measurements.

Step 3. Unscrew Bolts to Remove Old Toilet Seat

Remove the old seat by unscrewing the two bolts holding it in place. Some seats have plastic caps covering these screws. If yours has them, simply pop them open.

Step 4. Use Pliers to Remove Nuts

Use pliers to move the nuts underneath where the bolts are located. If you have an older toilet, the bolts may be corroded and difficult to remove. If so, use penetrating fluid to help free the rusted metal. Let the fluid sit for several hours before attempting to remove the seat again.

Step 5. Install the New Toilet Seat

Install the new toilet seat. Simply position the top portion over the two holes where you removed the bolts. Reinsert the bolts and screw them back in place with a screwdriver; then tighten the nuts underneath by hand. When you’re finished, snap the bolt covers back in place.

Find the Answers To Your Plumbing and HVAC Questions at Sansone

At Sansone, we have an entire team of skilled technicians. Whether you have issues with plumbing, air conditioning, heating, or ventilation, we can help. From repairs to installations, contact us today for all of your HVAC and plumbing needs in South Florida.

Broward: (954) 800-2858
Palm Beach: (561) 701-8274
St. Lucie: (772) 879-5656

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