High smoke point oils are a practical necessity for any kitchen. Deep frying at 350–375°F, achieving a proper sear on a cast iron skillet at 450°F+, or wok cooking at maximum heat all require oils that can tolerate these temperatures without smoking, degrading, or producing off-flavors.1 2
This guide ranks cooking oils by smoke point, explains the trade-offs between smoke point and nutritional Quality, and provides practical recommendations for matching oil type to cooking method.
Avocado oil has the highest smoke point of common cooking oils at approximately 520°F (271°C) for refined avocado oil. For a complete overview, see our Olive Oil Gastronomy: Cooking, Baking & Culinary Uses guide.For a complete overview, see our Cooking Properties guide.Refined olive oil (435–468°F / 224–242°C) is the best high-heat option among olive oils. The key trade-off is that high smoke point oils are almost always refined — meaning the polyphenol and antioxidant content present in extra virgin olive oil is absent. For health-conscious cooks, the practical strategy is to use EVOO for medium-heat cooking and finishing, and a high smoke point refined oil for deep frying and searing.1 2
Here are the smoke points of the most common cooking oils, ranked from highest to lowest:1 2
| Rank | Oil | Smoke Point (°F) | Smoke Point (°C) | Type |
|---|---|---|---|---|
| 1 | Avocado oil (refined) | 520°F | 271°C | Refined fruit oil |
| 2 | Safflower oil (high-oleic) | 475–510°F | 246–266°C | Refined seed oil |
| 3 | Sunflower oil (high-oleic) | 475°F | 246°C | Refined seed oil |
| 4 | Rice bran oil | 460°F | 238°C | Refined grain oil |
| 5 | Grapeseed oil | 420–440°F | 216–227°C | Refined seed oil |
| 6 | Olive oil (refined) | 435–468°F | 224–242°C | Refined olive oil |
| 7 | Peanut oil | 450°F | 232°C | Refined nut oil |
| 8 | Canola oil | 400°F | 204°C | Refined seed oil |
| 9 | Corn oil | 400–450°F | 204–232°C | Refined seed oil |
| 10 | Sesame oil (refined) | 410°F | 210°C | Refined seed oil |
| 11 | Coconut oil (refined) | 400–450°F | 204–232°C | Refined coconut |
| 12 | Olive oil (extra virgin) | 374–410°F | 190–210°C | Unrefined fruit oil |
| 13 | Coconut oil (virgin/unrefined) | 350°F | 177°C | Virgin coconut |
| 14 | Butter / Ghee | 300–350°F | 149–177°C | Dairy fat |
Avocado oil's exceptional smoke point (520°F / 271°C refined) comes from its fatty acid composition — approximately 60–70% oleic acid (monounsaturated omega-9), with minimal polyunsaturated linoleic acid. The double bonds in polyunsaturated fatty acids are the primary sites of thermal oxidation; fewer double bonds means higher oxidative stability at temperature.1 2
Avocado oil is also extracted using centrifugal extraction without chemical refining for the unrefined variety — the refined version uses physical refining (no chemicals) to raise the smoke point further. The fatty acid profile is what makes the difference; the refining method matters less for smoke point than the underlying oil chemistry. Unrefined avocado oil has a smoke point of approximately 480°F (249°C) — still excellent, but notably lower than the refined version.1
The oils with the highest smoke points are almost universally refined oils — meaning they have been processed to remove the free fatty acids and minor compounds that lower the smoke point. This refining also removes any naturally occurring antioxidants and polyphenols. The high-smoke-point refined oils (canola, sunflower, corn, grapeseed) are functionally similar to each other: neutral flavor, high heat stability, no meaningful bioactive compounds.1 3
| Oil | Smoke Point | Health Quality | Flavor |
|---|---|---|---|
| Avocado oil (refined) | 520°F | Moderate (monounsaturated, no polyphenols) | Neutral |
| Olive oil (refined) | 460°F | Moderate (monounsaturated, no polyphenols) | Neutral |
| Canola oil | 400°F | Lower (polyunsaturated omega-6 dominant) | Neutral |
| Extra Virgin Olive Oil | 385°F | Highest (polyphenols, vitamin E, antioxidants) | Fruity, complex |
| Coconut oil (refined) | 450°F | Lower (saturated fat) | Neutral |
| Butter / Ghee | 350°F | Moderate (butyrate, vitamin K2 in ghee) | Rich |
The practical implication: no single oil is optimal for both maximum smoke point and maximum nutritional quality. The healthiest cooking strategy uses different oils for different applications — EVOO for flavor and medium-heat cooking, high smoke point refined oils for deep frying and searing.
Refined avocado oil and refined olive oil are the best choices. Both tolerate deep frying temperatures with significant margin, have neutral to mild flavor that does not overpower fried foods, and are relatively stable through multiple frying sessions. Canola oil is the budget alternative — its 400°F smoke point gives adequate margin, but its high omega-6 polyunsaturated content makes it more susceptible to oxidation during repeated frying.1
Only refined avocado oil (520°F) can reliably handle maximum sear temperatures without smoking. Cast iron at maximum heat can reach 450–500°F in a hot skillet. Avocado oil is the only commonly available edible oil that handles this without significant smoke.2
Wok burners reach extremely high temperatures — restaurant-grade wok burners output 15,000–20,000 BTU, capable of flash-searing at very high temperatures. The traditional high-smoke-point oil for wok cooking is peanut oil (450°F smoke point) or avocado oil. Canola works for moderate-heat wok cooking. Refined sesame oil has a lower smoke point (410°F) and is better used as a finishing oil for flavor.1
Most baking applications do not require high smoke point oils — the oven temperature is at or below the smoke point of EVOO. Extra virgin olive oil is perfectly appropriate for baking and adds flavor complexity that refined oils lack. For high-heat baking (popover pans, very hot ovens), refined oils provide margin against smoke events.1
Refined oils are safe for high-heat cooking — they have been processed specifically to remove the compounds (free fatty acids, peroxides) that make oils unstable at temperature. The refining process produces an oil that is more thermally stable than the unrefined starting material, not less safe.1
The smoke point vs health quality trade-off is real but manageable, not the refining process itself. Polyunsaturated oils (canola, corn, soybean, sunflower) are high in omega-6 linoleic acid, and repeated exposure to high heat accelerates their oxidation. The resulting oxidized compounds are what epidemiologists link to adverse health outcomes in populations with high consumption of repeatedly-heated frying oils. For home cooks who change frying oil regularly (after 8–10 frying sessions), this is not a significant concern.1 3
The oils most recommended for high-heat cooking on health grounds are avocado oil (high oleic monounsaturated) and refined olive oil (same fatty acid profile as EVOO but without polyphenols) — both are dominated by monounsaturated fat, which is more oxidatively stable than polyunsaturated fats at high temperature.1 2
Refined avocado oil has the highest smoke point of common edible cooking oils at approximately 520°F (271°C). This makes it the most versatile cooking oil — suitable for deep frying, high-heat searing, and wok cooking without smoking. Unrefined avocado oil has a smoke point of approximately 480°F (249°C), still among the highest available. Refined olive oil (435–468°F / 224–242°C) is the best olive oil option for high-heat cooking.1 2
Refined avocado oil and refined olive oil are the best choices for deep frying, with smoke points well above deep frying temperatures (350–375°F), neutral to mild flavor that does not overpower food, and high monounsaturated fat content that provides good oxidative stability through multiple frying sessions. Canola oil is a cost-effective alternative at 400°F smoke point. Avoid using extra virgin olive oil for deep frying — the smoke point is at the lower edge of the deep frying range and the polyphenol content degrades significantly above 356°F, wasting the nutritional investment.1
Refined oils are not inherently unhealthy — the refining process removes free fatty acids and oxidation products, producing a thermally stable cooking medium. The health differences between refined oils are primarily from their fatty acid composition: high-oleic oils (avocado, refined olive oil) are more oxidatively stable than high-polyunsaturated oils (canola, corn, soybean). The EFSA notes that the authorized health claim for olive oil polyphenols applies only to oils with sufficient polyphenol content — refined oils are explicitly excluded.4: high-oleic oils (avocado, refined olive oil, high-oleic sunflower) are more oxidatively stable than high-polyunsaturated oils (canola, corn, soybean, regular sunflower). For high-heat cooking, choosing high-oleic refined oils is the healthier choice — see the olive oil smoke point guide for the full thermal stability comparison.1
Not necessarily — occasional wisping of smoke at the beginning of a high-heat cooking session is normal and does not require discarding the oil. The oil should be discarded when it shows visible darkening, any acrid or chemical smell persisting after cooling, or when it has been used for multiple deep frying sessions (more than 8–10 for home use). The oil's smoke point is a quality indicator, not a toxicity threshold. Discarding oil once because of a smoke event during normal cooking is unnecessary caution.1
1. Olive Oil Source. "Olive Oil Classification and Smoke Point." https://www.oliveoilsource.com/info/olive-classification
2. USDA FoodData Central. "Cooking Oil Smoke Points." https://fdc.nal.usda.gov/fdc-app.html
3. Olive Oil Source. "Olive Oil Health Claims and Standards." https://www.internationaloliveoil.org/what-we-do/chemistry/