When the toilet seat is loose, you need to tighten it properly. The seat is typically attached to the toilet using bolts and nuts. Use a screwdriver to tighten these bolts to fix the loose seat issue. If the seat is severely damaged, consider purchasing and replacing it.
Steps
Tighten the Toilet Seat

Locate the screws and pry off the cover. The seat is usually secured at the back with two long screws that pass through the porcelain beneath the toilet. There is typically a small groove at the top of the cover, insert a screwdriver into this groove to pry off the cover. Then, use a small screwdriver to lift both the seat and the toilet lid.
- For budget toilets, the screws are often made of plastic. However, most high-end toilets use metal screws, and some even use stainless steel or brass for premium models. Be extra cautious when removing plastic screws!

Place the seat evenly in the center. If the seat is loose, it may have shifted and is no longer aligned with the toilet rim. Ensure that the seat is positioned straight and evenly above the toilet. You can also sit down to check if the seat feels comfortable.

Tighten the bolts. Turn the screwdriver clockwise to tighten the bolts. Remember: "right tight, left loose." Typically, the bolts come with wing nuts to make it easier for users to tighten them. If the toilet uses regular nuts, you can hold them in place with a cloth while tightening the bolts.
- Select the correct size screwdriver. The screwdriver must fit the bolt head. If the screwdriver is too small, you won't be able to turn the bolt. Friction from the slipping screwdriver will wear out the bolt head and make it unusable.

Use pliers. If the bolt still won't tighten, use small pliers to hold the nut underneath. Clamp the pliers onto the nut and hold it in place while tightening the bolt. Once you've turned the bolt enough, the nut will securely hold the bolt in place.
- If you need to loosen the nut, you can spray it with rust remover and WD-40, then wait for 5 minutes.

Continue tightening until the seat is firmly in place. Once the bolt is securely fastened, tighten it an additional 1/4 turn to make sure it's fully secure. When the seat is fixed and no longer shifts, you can close the toilet lid. The lid will close naturally in place.
Replace the toilet seat

Consider purchasing a new seat. If the bolts are damaged or the seat remains loose despite tightening, you might only need to replace the individual components. However, if the structure of the seat is compromised, it’s best to replace the entire seat to ensure longer-lasting use. Look for toilet seats at local home decor and building material stores.

Choose the right type of seat. Standard commercial toilet seats come in two shapes: round and elongated. A round seat is entirely circular, while an elongated seat has an egg-like shape. Pick the type that best fits your toilet.
- It is recommended to buy a seat from the same brand, specifically designed for your toilet, to ensure a proper fit. Other brands may also fit, but not as accurately.
- Note: Compared to wooden seats, plastic seats are easier to clean and more durable in terms of color retention.

Install the new seat. Unscrew the bolts to remove the old seat, set it aside, and attach the new seat to the toilet. Make sure to align the new seat correctly and ensure it fits snugly onto the toilet.
- Keep the bolts and nuts from the old seat in case you need to replace them later.
Advice
- If the bolts on the seat are damaged, you can purchase plastic ones at most hardware stores.
- Check to ensure the groove on the screw cap is designed for prying. Some toilet seats use small twist locks, identifiable by grooves on the lid.
- If you wish to completely replace the seat, don’t forget to choose between round and elongated types. Look at the front of the toilet to determine if the edge is round or egg-shaped. You can also refer to the product packaging if you still have it.
Things You’ll Need
- Large flathead screwdriver
- Small flathead screwdriver
- Small pliers