Aluminum vs. Tin Foil: Which Is Safer, Cheaper & Better for Cooking?
Aluminum foil is the thin, flexible sheet made almost entirely of aluminum metal. “Tin foil” is a historic misnomer; actual tin foil hasn’t been sold for kitchen use since World War II.
People still say “tin foil” because their parents did, and the phrase stuck even though modern rolls are pure aluminum. The mix-up rarely causes harm—until someone hunts for “tin” at the store and ends up confused or overcharged.
Key Differences
Aluminum foil: 0.016 mm thick, melts at 660 °C, costs about $0.03 per square foot. Real tin foil: 0.02 mm, melts at 232 °C, pricier and no longer stocked for food use.
Which One Should You Choose?
Choose aluminum: it handles oven temps, is cheaper, and food-safe. If a recipe says “tin foil,” ignore the vintage wording and reach for the standard silver roll.
Is tin foil toxic if accidentally used?
No—because you can’t buy kitchen-grade tin foil today. Any “tin” product you find is either aluminum or specialty industrial sheet, not pure tin.
Does thickness affect safety?
Yes. Thicker heavy-duty aluminum resists tearing and keeps acidic foods from leaching metal; standard gauge is fine for light wrapping.