Not every grill has a built-in thermometer, and the ones that do are often reading the wrong spot — the air inside a closed lid, not the heat actually hitting your food at grate level. The hand test fixes both problems: it's free, works on any grill, and measures the heat where it actually matters.
How to Do It
Hold your palm flat, about 3-4 inches above the grate, directly over the zone you're about to cook on. Start counting — "one-Mississippi, two-Mississippi" works fine — and note how many seconds you can comfortably hold your hand there before the heat forces you to pull away. Match that count to the chart below.
Seconds to Temperature Chart
| Seconds You Can Hold | Heat Level | Approx. Temperature | Good For |
|---|---|---|---|
| 2-3 sec | High | 450-550°F+ | Searing steaks, burgers, shrimp |
| 4-5 sec | Medium-High | 400-450°F | Chicken, pork chops, salmon |
| 6-7 sec | Medium | 350-400°F | Chicken wings, dense vegetables |
| 8-10 sec | Medium-Low | 300-350°F | Whole chicken, indirect finishing |
| 10-12+ sec | Low | 250-300°F | Ribs, low-and-slow cooks |
For the full food-by-food breakdown of which zone and time each one needs, see the Grill Temperature Calculator.
Why It Works
The hand test is measuring radiant heat directly, the same heat that will sear or cook your food — it's not a precision instrument, but it's reading the right location, which is more than most grill lid thermometers can say. A lid thermometer typically sits several inches above the grate and reads the trapped air temperature inside a closed grill, which tends to run cooler than the grate itself, especially with the lid open (as it is during most direct grilling).
When to Trust It, and When Not To
The hand test is reliable enough to tell high heat from medium from low — exactly the resolution you need for quick, direct-heat cooking like burgers, steaks, and vegetables. It's less reliable for long, low-and-slow cooks like ribs or brisket, where you're holding a specific number (say, 275°F, not just "low") steady for hours; a drift of 20-30°F that the hand test wouldn't catch can meaningfully change a multi-hour cook. For those, a dedicated grill or oven thermometer left in place for the whole cook is worth the investment.
Common Mistakes
Testing at the wrong height. Testing right at the flame or too far above the grate both give misleading readings — stick to 3-4 inches above the actual cooking surface.
Testing over the wrong zone. If you've set up direct and indirect zones, test each one separately — they're intentionally different temperatures, and testing only the direct side will make you think the indirect zone is hotter than it actually is.
Relying on it for hours-long cooks. A single hand test is a snapshot, not a monitoring system. For anything over an hour, check again periodically, or switch to a left-in-place thermometer.
Frequently Asked Questions
How accurate is the hand test compared to a real thermometer?
It's a rough estimate, typically accurate within a 50°F range — good enough to decide whether you're in the right zone (high, medium, or low) but not precise enough for a long, slow cook where a 20-degree drift matters over several hours, like ribs or brisket.
Where exactly should I hold my hand for the test?
About 3-4 inches above the grate, directly over the zone you're planning to cook on — not over the flame itself, and not at the height of a lid-mounted thermometer, which reads the air temperature inside the closed grill rather than the heat at food level.
Why does my hand test give a different reading than my grill's built-in thermometer?
A lid-mounted thermometer usually sits several inches above the grate and reads the ambient air temperature inside the closed grill, which runs cooler than the direct radiant heat at grate level where your food actually cooks. The hand test measures grate-level heat directly, which is often the more useful number for deciding how food will actually sear or cook.