How Long to Boil Shrimp (By Size, Frozen and Shell-On)
Boiled shrimp is about as easy as cooking gets, but there is a very small window between juicy and rubbery. Most shrimp only need two to four minutes in the pot. Leave them in while you set the table and they turn tough and chewy.
This guide gives you clear boiling times by shrimp size, what changes for frozen or shell-on shrimp, and the simple signs that tell you they are done. It also covers how to season the water and why an ice bath is worth the extra bowl.
Quick answer: Boil small shrimp for about 1 to 2 minutes, medium shrimp for 2 to 3 minutes, and large or jumbo shrimp for 3 to 4 minutes (up to 5 for extra jumbo). Start timing once the water returns to a boil. The shrimp are done when they turn pink on the outside, opaque white inside, and curl into a loose C shape. Frozen shrimp straight from the freezer need 1 to 2 extra minutes.
How Long to Boil Shrimp by Size
Shrimp are sold by count per pound. The lower the number, the bigger the shrimp. Use the count on the bag to pick your time.
| Size | Count per pound | Boiling time (thawed) |
|---|---|---|
| Small | 51 to 60 | 1 to 2 minutes |
| Medium | 41 to 50 | 2 to 3 minutes |
| Large | 31 to 40 | 3 to 4 minutes |
| Jumbo | 21 to 25 | 4 minutes |
| Extra jumbo / colossal | 16 to 20 or fewer | 4 to 5 minutes |
Shrimp cook faster than most people expect. Research from the University of Arkansas, reported by Newswise, found that extra jumbo shrimp reached a safe temperature after about 1 minute 40 seconds of boiling and colossal shrimp after about 2 minutes 39 seconds. The times in the table run a little longer because a batch of cold shrimp drops the water temperature, and home pots take a moment to come back to a boil. Treat the table as a guide and check the shrimp.
How Long to Boil Frozen Shrimp
For the best texture, thaw frozen shrimp first. The fastest way is to put them in a colander under cold running water for about 15 to 20 minutes, or seal them in a bag and leave them in a bowl of cold water. You can also thaw them overnight in the fridge.
If you are short on time, you can boil them straight from frozen. Add about 1 to 2 minutes to the times above, and cook in smaller batches so the water stays at a boil. Frozen shrimp release more water and can cook a little unevenly, so check a couple before you drain the whole pot.
How Long to Boil Shrimp With the Shell On
Shell-on shrimp take about the same time, sometimes 30 seconds to a minute longer for large ones. Many cooks prefer boiling in the shell because the shell protects the meat and adds flavor, which is why peel-and-eat shrimp are usually cooked this way. Peeled and deveined shrimp are more convenient if you are adding them to pasta or a salad.
How to Boil Shrimp Step by Step
- Fill a large pot with enough water to cover the shrimp by a couple of inches. Use about 4 quarts of water for 1 to 2 pounds of shrimp.
- Season the water. Add 1 to 2 tablespoons of salt, plus a halved lemon, a couple of bay leaves or a spoonful of seafood seasoning like Old Bay if you like.
- Bring it to a rolling boil.
- Get an ice bath ready in a large bowl with ice and cold water.
- Add the shrimp and start the timer when the water returns to a boil.
- Check early. Pull one shrimp out at the low end of the time range and cut it open. It should be opaque all the way through.
- Drain and chill. Scoop the shrimp out with a slotted spoon and drop them straight into the ice bath for a couple of minutes.
- Drain again and serve warm, or keep them in the fridge for shrimp cocktail.
How to Tell When Boiled Shrimp Is Done
- Color: Raw shrimp look gray and see-through. Cooked shrimp are pink or orange-red on the outside.
- Inside: The flesh should be white and opaque all the way through, with no glassy center.
- Shape: Fulton Fish Market explains that a loose C shape means cooked, while a tight O shape means overcooked.
- Temperature: The FoodSafety.gov guidance for shellfish is 145°F, or until the flesh is pearly and opaque.
How Long to Boil Shrimp for Shrimp Cocktail
For shrimp cocktail, use large or jumbo shrimp, boil them in well-seasoned water for 2 to 4 minutes depending on size, and move them to an ice bath right away. Chill them in the fridge for at least 30 minutes before serving. Some cooks prefer to bring the water to a boil, add the shrimp, then turn off the heat and let them poach for 3 to 5 minutes, which gives a very tender result.
What About Precooked Shrimp?
Shrimp that are already pink when you buy them are precooked. You do not need to boil them again. If you want them warm, dip them in boiling water for 30 to 60 seconds. Any longer and they will turn rubbery.
Common Mistakes When Boiling Shrimp
- Walking away from the pot. A minute too long is all it takes to overcook shrimp.
- Not salting the water. Shrimp cook so fast that the water is your main chance to season them.
- Crowding the pot. Too many shrimp at once drop the water temperature and cook unevenly.
- Skipping the ice bath. Shrimp keep cooking from their own heat after you drain them.
- Boiling precooked shrimp. They only need a quick warm-up.
How to Store Boiled Shrimp
Cool boiled shrimp quickly and refrigerate them within 2 hours. Keep them in a sealed container and eat them within 3 to 4 days. You can also freeze cooked shrimp for a few months, though the texture is best fresh. Looking for other boiling times? See our guides on how long to boil eggs, corn on the cob and potatoes, which pair well with shrimp for a simple shrimp boil.
Frequently Asked Questions
How long does it take to boil shrimp?
Most shrimp take 2 to 4 minutes once the water returns to a boil. Small shrimp can be done in 1 to 2 minutes and extra jumbo can take up to 5.
How long to boil raw shrimp?
Raw, thawed shrimp take 2 to 3 minutes for medium and 3 to 4 minutes for large. They are done when pink outside and opaque inside.
Do you boil water before adding shrimp?
Yes. Bring the water to a full rolling boil first, then add the shrimp. Starting them in cold water makes it much harder to time.
Why are my boiled shrimp rubbery?
Rubbery shrimp are almost always overcooked. Pull them as soon as they turn opaque and cool them in ice water.
Should you devein shrimp before boiling?
It is optional. The vein is the digestive tract and is safe to eat, but many people remove it for looks and texture. You can devein before or after cooking.
The Bottom Line
How long to boil shrimp comes down to size: about 1 to 2 minutes for small, 2 to 3 for medium and 3 to 5 for large and jumbo, with a minute or two more if they are frozen. Season the water, watch for pink, opaque flesh and a loose C shape, and finish them in ice water. That is all it takes for tender shrimp every time.
