How To Make Dry Ice: 13 Steps (with Pictures) - WikiHow

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Terms of Use wikiHow is where trusted research and expert knowledge come together. Learn why people trust wikiHow How Do You Make Dry Ice? PDF download Download Article Make and use dry ice quickly and safely at home Co-authored by Bess Ruff, MA and Amy Bobinger, BA

Last Updated: February 19, 2026 Fact Checked

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  • Making Dry Ice
    • |
  • Getting the CO2
    • |
  • Using Homemade Dry Ice
    • |
  • FAQs
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  • Video
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  • Q&A
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  • Tips
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  • Warnings
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  • Things You'll Need
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This article was co-authored by Bess Ruff, MA and by wikiHow staff writer, Amy Bobinger, BA. Bess Ruff is a Scientist based in Sydney, Australia. Her research interests and previous scientific experience include environmental science, geography, biotechnology, mariculture, marine spatial planning, stakeholder engagement, and spatial ecology. She is a Postdoctoral Researcher at University of Sydney and a Project Manager at Offshore Biotechnologies. Prior to her work in Sydney, Bess was a Postdoctoral Researcher for over 2 years at Florida State University. She received a PhD in Geography from Florida State University, with a doctoral dissertation entitled "Culturing a Sustainable Seafood Future: How Governance, Economics, and Society Are Driving the Global Marine Aquaculture Industry”. She received her MA in Environmental Science and Management from the University of California, Santa Barbara in 2016. She has conducted survey work for marine spatial planning projects in the Caribbean and provided research support as a graduate fellow for the Sustainable Fisheries Group. There are 13 references cited in this article, which can be found at the bottom of the page. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed 720,607 times.

Dry ice is the solid form of the chemical carbon dioxide (CO2), just like normal ice is the solid form of water (H2O). Dry ice is extremely cold (-109.3°F or -78.5°C), so it is used for a wide variety of cooling and freezing purposes in the industrial world. With the right ingredients, it's possible to make your very own dry ice at home—read on to learn how to do it safely and easily!

How do you make dry ice at home?

  1. Wear protective clothing and work in a ventilated location.
  2. Grab a CO2 fire extinguisher or CO2 tank and a pillowcase.
  3. Wrap the pillowcase tightly around the extinguisher’s nozzle.
  4. Give the extinguisher or tank a blast for about 10 seconds.
  5. Remove the pillowcase.
  6. Pour the dry ice out of the pillowcase into an insulated container, but don't seal it.

Steps

Section 1 of 4:

How to Make Dry Ice at Home

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  1. Step 1 Get a CO2 container, work in a ventilated area, and wear safety gear. 1 Get a CO2 container, work in a ventilated area, and wear safety gear. You can make dry ice using carbon dioxide. However, carbon dioxide vapor can be harmful if you breathe too much in, so it’s best to do this somewhere with plenty of fresh air—like outdoors or in an open garage. To protect yourself from frostbite burns, put on leather or cryogenic gloves, protective eyewear, long sleeves and thick pants, and closed-toe shoes.[1]
    • If you’re not sure which type of container to use, jump to our section on choosing a fire extinguisher or CO2 canister.
  2. Step 2 Wrap a cloth bag or pillowcase tightly around the CO2 nozzle. 2 Wrap a cloth bag or pillowcase tightly around the CO2 nozzle. If you’re using a fire extinguisher, put the nozzle horn inside the canvas bag or pillowcase. If you’re using a carbon dioxide canister, attach a horn or nozzle to the canister and wrap the bag around that. Gather the pillowcase material and hold it so it’s wrapped tightly around the hose behind the horn. You don't want any gas to be able to escape from the opening.[2]
    • Wrap duct tape around the mouth of the bag to make a tight seal if you're worried about the pillowcase flying off. The amount of pressure in the extinguisher shouldn't make it hard to hold on, but extra precaution never hurts.
    • If you plan on making dry ice often, you may want to invest in a dry ice maker attachment, which is essentially a horn nozzle with a fabric bag over the end that can be fastened and removed.
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  3. Step 3 Squeeze the extinguisher trigger or open the canister nozzle. 3 Squeeze the extinguisher trigger or open the canister nozzle. If you’re using a fire extinguisher, remove the safety pin, then squeeze the handle. If you’re using a CO2 canister, turn the knob on the top of the canister to open the valve. Fill the bag with CO2 gas for about 5–10 seconds. Carbon dioxide vapor will seep out of the pillowcase—this is normal and safe as long as you're in a well-ventilated area as recommended.[3]
    • You may not think ice is being produced, but it should quickly start to gather up at the bottom.
  4. Step 4 Remove the pillowcase and open it to see the dry ice. 4 Remove the pillowcase and open it to see the dry ice. Carefully take the horn out of the pillowcase (you’ll need to unwrap the tape if you used it). Keep the fabric tight against the horn to wipe off any ice sticking to it. You should find a small pile of dry ice at the bottom of the pillowcase—it will be a crumbly white material resembling styrofoam.[4]
    • Try to keep the bag upright so the dry ice doesn’t spill.
    • Avoid handling the dry ice for more than a few seconds—even if you’re wearing gloves, the dry ice can damage your skin if you hold it for long.
  5. Step 5 Transfer the ice into a sturdy plastic container. 5 Transfer the ice into a sturdy plastic container. Turn the bag inside out and shake any dry ice into your holding container. Thick plastic coolers or Styrofoam and ice chests are best for storing dry ice since they’re designed to withstand cold, but you can also use a thermos as long as you don’t seal it. Keep the dry ice in a single pile and keep the chunks as big as possible to make it last as long as possible.[5]
    • Do not seal the container. If you put an airtight lid on, the pressure of the CO2 gas will build up, causing the lid to pop off or the container to explode. If you do use a lid on the container, leave it propped open.
    • Do not store dry ice in glass, porcelain, ceramic, or metal containers—the cold can cause glass to crack or shatter, and metal containers may warp.
    • Once your dry ice is in a container, store that container somewhere cool, dry, and safe, and well-ventilated. Do not place it in a freezer. Be sure it’s placed somewhere that children and pets can't get to it.[6]
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Section 2 of 4:

Choosing a Fire Extinguisher or Carbon Dioxide Canister

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  1. Step 1 CO2 fire extinguisher 1 CO2 fire extinguisher You specifically need a CO2 fire extinguisher for this method, not an ordinary home extinguisher. Most home extinguishers use fine powders of a chemical like sodium bicarbonate or potassium bicarbonate, which won't supply the CO2 needed to produce dry ice.[7]
    • CO2 fire extinguishers are usually used for laboratories, kitchens, and around mechanical equipment.[8] They usually have a black plastic horn on the nozzle and have no pressure gauge.
    • You can find CO2 extinguishers at some hardware stores and online specialty retailers.
  2. Step 2 CO2canister 2 CO2canister Rent or buy a commercial tank of pressurized CO2, which are sold at welding supply stores and online. Just make sure that it has something called a dip tube, which is sold separately.[9] Often, dip tube-equipped tanks are marked with two white stripes, while tanks without dip tubes have a black finish.[10]
    • A dip tube will draw liquid carbon dioxide from the bottom of the tank, which is what you want for making dry ice. Tanks without a dip tube will draw gas carbon dioxide from the top of the tank, which won't make dry ice.
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Section 3 of 4:

Using Homemade Dry Ice

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  1. Step 1 Make your own fog. 1 Make your own fog. One of the most common uses of dry ice is to create artificial smoke or fog. This is as simple as mixing dry ice and water—splashing a bit of water onto the ice creates a hissing noise and produces lots of carbon dioxide gas. This is handy for dances, rock concerts, haunted houses, and other places where you might want to create an eerie, mysterious atmosphere.[11]
    • If you use a container with a small vent hole, you can produce a geyser-like contraption where fog shoots out in a narrow jet. This can even be powerful enough to power a small motor or turn a pinwheel.
    • Only make carbon dioxide gas outdoors and in well-ventilated areas. Producing lots of carbon dioxide gas in an area with poor ventilation can eventually force the oxygen out, making it impossible to breathe.
  2. Step 2 Use dry ice to carbonate liquids. 2 Use dry ice to carbonate liquids. Another frequent use of carbon dioxide is to make carbonated beverages like soda, beer, sparkling wine, and sparkling water). Putting dry ice in water causes it to release carbon dioxide into the water which eventually gathers in the small bubbles that are the mark of any carbonated drink.[12]
    • Do not drink your beverage while there is dry ice in it. Wait for the dry ice to bubble away completely before drinking. Swallowing dry ice can cause major internal damage.
    • Some people don't like the taste of dry ice-carbonated beverages. You may want to sample the process with a small amount of your liquid before trying it with the main batch.
  3. Step 3 Use dry ice to keep food and beverages frozen. 3 Use dry ice to keep food and beverages frozen. Dry ice is much, much colder than regular ice, so it can obviously keep food and drinks much, much colder. This makes it a great way to keep foods frozen—like if you’re shipping frozen foods. You can also put dry ice in an ice chest to help keep your food cold—add a layer of cardboard between the dry ice and the food to keep it from freezing.[13]
    • To use dry ice in an ice chest, add your cold foods to the ice chest first, then place the dry ice on top and loosely shut the lid (do not seal it completely or it could explode). Cold air sinks, so putting the dry ice on top keeps the chest frozen more efficiently. If there is any leftover space, fill it with wadded-up newspaper (extra air will make dry ice sublimate faster).
    • Dry ice also works well for keeping normal ice frozen in a cooler.
    • Typically, you will want about 10 to 20 pounds (4.5 to 9.1 kg) of dry ice for every 24-hour period you need to keep your food items frozen (depending upon the size of the ice chest.)
  4. Step 4 Use dry ice to store loose food. 4 Use dry ice to store loose food. Surprisingly, dry ice can be used to keep foods like grains, beans, lentils, and pastas fresh. To do this, first place the dry ice at the bottom of a cooler. Make sure there isn't any frost on the dry ice, as this can introduce moisture and get your food wet. Pour your food products over the dry ice. Let this sit with the lid loosely on (but not sealed or it could explode) for about 5-6 hours—the ice needs to completely sublimate, so wait until there is no solid ice left before you seal the lid.[14]
    • As the ice sublimates, it forms CO2 gas, which is heavier than air. As more gas forms, it forces the air out of the container. Without any air in the container, it is very difficult for bacteria or pests to survive, which greatly extends the food's life.
    • For this method, you will want to use about 1⁄4 lb (0.11 kg) of dry ice per 5 gallons (19 L) container.
  5. Step 5 Use dry ice to shrink solid materials. 5 Use dry ice to shrink solid materials. As mentioned above, dry ice is so cold that it will actually cause materials like metal and ceramic to shrink slightly when it touches them.[15] In certain situations, this property can actually be used to your advantage.
    • Fixing car dents: If you have a small "ding" on your car's exterior that looks like the metal has been pushed inward, dry ice may be able to help. Use heavy gloves to press a block or sheet of dried ice against the dent. If you can, press it against the inside of the dent as well. Hold the ice in place until frost forms a few inches around the dent, then remove the ice and let the material warm again. Repeat as needed until the dent smooths.
    • Removing floor tiles: This trick is great for removing one or two ceramic tiles from your floor. Place a flat sheet of dry ice centered on the floor tile so that it touches its entire surface. Wait until the entire tile is frosted over. If the tile does not pop out by itself, use a few taps from a hammer and screwdriver to loosen the adhesive along the edges.
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Section 4 of 4:

FAQs

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  1. 1 How long will dry ice last? Dry ice sublimates (evaporates) at a rate of 5–10 lb (2.3–4.5 kg) a day. You’ll be making far less than 5 lb (2.3 kg) from a fire extinguisher or CO2 canister. With this project, unfortunately, the dry ice will probably only last a couple of hours if it’s stored properly.[16]
    • The safest way to dispose of your dry ice is to let it sublimate on its own. Do not pour dry ice into a sink, toilet, or trash can.
  2. 2 How do I make a block of dry ice? You’ll need a dry ice machine. Dry ice blocks can be made from compressed CO2, but you’ll need something to hold the ice and press it into a block shape. Dry ice makers are available to the public, but they cost hundreds or even thousands of dollars—typically not a practical purchase unless you’re using the dry ice for business purposes.
    • These machines are typically made of a hose that attaches to a CO2 canister, plus a box or mold to contain the dry ice and form it into a block. You have to obtain the CO2 separately.
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Community Q&A

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  • Question Can dry ice be made in a special freezer? Community Answer Community Answer No, it requires special equipment to reach the temperature needed. Thanks! We're glad this was helpful. Thank you for your feedback. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow Yes No Not Helpful 24 Helpful 72
  • Question How do I make ice cream Community Answer Community Answer Get some ice, ice cream salt, zip lock, and some heavy cream. Put some heavy cream in a small zip lock bag. Get a bigger zip lock bag, and put some ice and the ice cream salt in there. After that, put the zip lock bag with the heavy cream into the zip lock bag with the ice and ice cream salt. Shake it for about 20 minutes. Get your ice cream out of the zip lock bag and enjoy your ice cream. Thanks! We're glad this was helpful. Thank you for your feedback. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow Yes No Not Helpful 25 Helpful 57
  • Question Can I make dry ice without a fire extinguisher? Community Answer Community Answer Yes, if you can get your hands on any source of pressurized carbon dioxide, such as a soda machine. Thanks! We're glad this was helpful. Thank you for your feedback. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow Yes No Not Helpful 28 Helpful 86
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Video

Tips

  • If want bulk amounts of dry ice, your best option is to buy it from a commercial retailer. Some supermarkets sell dry ice, but if you can't find it near you, you can also order it online from specialty suppliers. Thanks Helpful 5 Not Helpful 5
Submit a Tip All tip submissions are carefully reviewed before being published Name Please provide your name and last initial Submit Thanks for submitting a tip for review! Advertisement

Warnings

  • Do not let the dry ice touch your bare skin. It can create painful frostbite.[17] Thanks Helpful 0 Not Helpful 0
  • Handle dry ice in a well-ventilated room. As the solid carbon dioxide turns into a gas, it replaces oxygen in the air.[18] Thanks Helpful 0 Not Helpful 0
  • When storing dry ice, do not put a lid on the container. As it sublimates, the gas needs to dissipate in the air. The container could shatter or explode if left shut.[19] Thanks Helpful 0 Not Helpful 0
  • Children should not handle dry ice without adult supervision. Thanks Helpful 0 Not Helpful 0
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Things You'll Need

  • Carbon dioxide tank or fire extinguisher
  • Gloves
  • Goggles
  • Heavy-duty tape
  • Canvas bag or pillowcase
  • Jar or bowl

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References

  1. ↑ https://www.safety.rochester.edu/ih/dryicehandle.html
  2. ↑ https://youtu.be/OFVerpNmEzA?t=78
  3. ↑ https://youtu.be/OFVerpNmEzA?t=116
  4. ↑ https://youtu.be/OFVerpNmEzA?t=135
  5. ↑ https://www.safety.rochester.edu/ih/dryicehandle.html
  6. ↑ https://www.health.ny.gov/publications/7081/
  7. ↑ https://www.usf.edu/administrative-services/environmental-health-safety/programs-services/fire-safety/fire-extinguishers.aspx
  8. ↑ https://sciencing.com/make-easy-dry-ice-7768634.html
  9. ↑ https://spark.iop.org/making-dry-ice
More References (10)
  1. ↑ https://spark.iop.org/making-dry-ice
  2. ↑ https://chem.rutgers.edu/cldf-demos/1029-cldf-demo-fog-formation
  3. ↑ https://youtu.be/13TzMTmdXrs?t=74
  4. ↑ https://noblegassolutions.com/how-to-pack-a-cooler-with-dry-ice/
  5. ↑ https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1637&context=extension_histall
  6. ↑ https://fs.web.illinois.edu/Insider/2023/05/11/machinists-and-the-cold-steel-o/
  7. ↑ https://www.safety.rochester.edu/ih/dryicehandle.html
  8. ↑ https://www.safety.rochester.edu/ih/dryicehandle.html
  9. ↑ https://www.safety.rochester.edu/ih/dryicehandle.html
  10. ↑ https://www.safety.rochester.edu/ih/dryicehandle.html

About This Article

Bess Ruff, MA Co-authored by: Bess Ruff, MA Scientist This article was co-authored by Bess Ruff, MA and by wikiHow staff writer, Amy Bobinger, BA. Bess Ruff is a Scientist based in Sydney, Australia. Her research interests and previous scientific experience include environmental science, geography, biotechnology, mariculture, marine spatial planning, stakeholder engagement, and spatial ecology. She is a Postdoctoral Researcher at University of Sydney and a Project Manager at Offshore Biotechnologies. Prior to her work in Sydney, Bess was a Postdoctoral Researcher for over 2 years at Florida State University. She received a PhD in Geography from Florida State University, with a doctoral dissertation entitled "Culturing a Sustainable Seafood Future: How Governance, Economics, and Society Are Driving the Global Marine Aquaculture Industry”. She received her MA in Environmental Science and Management from the University of California, Santa Barbara in 2016. She has conducted survey work for marine spatial planning projects in the Caribbean and provided research support as a graduate fellow for the Sustainable Fisheries Group. This article has been viewed 720,607 times. 4 votes - 95% Co-authors: 44 Updated: February 19, 2026 Views: 720,607 Categories: Chemistry Article SummaryX

Before you try to make dry ice with compressed carbon dioxide, protect yourself from frostbite by putting on protective clothing, gloves, and eyewear. Working in a well-ventilated space, wrap a pillowcase tightly around the nozzle of a carbon dioxide fire extinguisher. Squeeze the handle of the fire extinguisher for 2-3 seconds, then remove the fire extinguisher. You should see a small pile of dry ice gathered in the bottom of the pillowcase. Transfer the dry ice to a sturdy plastic container like a thermos or a cooler, but do not seal the container. If you want to learn how to use your dry ice after you make it, keep reading the article! Did this summary help you?YesNo

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Yes No Advertisement If you buy through links on our site, we may earn a commission.Cookies make wikiHow better. By continuing to use our site, you agree to our cookie policy. Bess Ruff, MA Co-authored by: Bess Ruff, MA Scientist Co-authors: 44 Updated: February 19, 2026 Views: 720,607 95% of readers found this article helpful. 4 votes - 95% Click a star to add your vote Jim Lofgren

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"Great lesson on using dry ice in a cooler. I will be experimenting with dry ice vs water ice to see which will be..." more Stephen Schoppe

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"I'm making a redneck DC solar air conditioner for my Scotty camper using dry ice. I just wanted to know...." more D. P.

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"1) Easy Steps 2) Illustrations 3) Safety Precautions. Science should be made this fun and easy in schools!" Rated this article: Jim Gregg

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