How long to cook filet mignon on grill depends on more than simply counting minutes. Steak thickness, grill temperature, and desired doneness can all change the timing, which is why even a small difference may leave the center undercooked or push a tender filet too far.
This guide provides practical time ranges for 1-inch, 1½-inch, and 2-inch cuts, along with internal temperature guidance to help you know when your steak is truly ready.
1. How Long to Cook Filet Mignon on Grill by Thickness
Steak thickness is the main factor that changes grill time. A thinner filet reaches the center quickly, while a thicker cut needs more time for the heat to travel through the middle.
Use this how long to cook filet mignon on grill guide as a starting point for a grill set to approximately 400°F to 450°F. Treat the times as estimates and check the center with an instant-read thermometer.
1-inch Filet Mignon
A 1-inch filet mignon can be cooked over direct medium-high to high heat. It develops a crust quickly, so begin checking early and avoid relying on time alone.
| Thickness | Best Starting Point | When to Check |
| 1 inch | About 8 to 12 minutes total | After 6 to 8 minutes |
The exact time depends on the grill, starting temperature, and desired doneness. Turn the steak as needed to brown both sides evenly.
1½ to 2 Inch Filet Mignon
Thicker filet mignon takes longer because heat needs more time to reach the center. Sear both sides over direct heat, then move the steak to a cooler indirect zone if the exterior browns before the center reaches the target temperature.
| Thickness | Best Starting Point | When to Check |
| 1½ inch | About 10 to 16 minutes total | After 8 to 10 minutes |
| 2 inch | About 12 to 18 minutes total | After 10 to 12 minutes |
If you are checking how long to cook 2 inch filet mignon on grill, use these times only as starting points. The thicker the steak, the more important it is to monitor the internal temperature instead of relying on the clock alone.
>>> Read more: How to Grill Filet Mignon for Perfect Flavor Every Time
2. Grill Time By Doneness Level
Once the steak is close to done, use doneness to decide when to pull it from the grill.
Internal temperature is more reliable than time when determining how long to cook filet mignon on grill.
For food safety, the USDA recommends cooking whole beef steaks to at least 145°F before removing them from the grill, followed by a rest of at least three minutes.
Some people prefer rare or medium-rare steak at lower culinary temperatures. However, temperatures below 145°F fall below USDA food-safety guidance.
Rare to Medium Rare
Rare and medium rare keep the center soft and juicy. Pull the steak a few degrees before the final target so carryover cooking can finish the job.
| Doneness | Common Culinary Final Temperature |
| Rare | 125°F to 130°F |
| Medium Rare | 130°F to 135°F |
Medium rare is the most common choice for filet mignon because it gives you a warm center and a tender texture without drying out the steak.
Medium to Well Done
Watch the thermometer closely to get the right timing for how long to cook filet mignon on grill and prevent the filet from overshooting its target.
| Doneness | Common Culinary Final Temperature |
| Medium | 140°F to 145°F |
| Medium Well | 150°F to 155°F |
| Well Done | 160°F or higher |
Carryover cooking may raise the temperature while the steak rests, but the amount varies. If following USDA guidance, make sure the center reaches at least 145°F before removing the filet from the grill, then rest it for at least three minutes.
3. What Affects Filet Mignon Grill Time
Even with a how long to cook filet mignon on grill chart, grill time can vary slightly from one steak to another.
These factors explain why the same filet mignon may finish a little sooner or later.
- Steak thickness: Thickness determines how quickly heat reaches the center of the steak.
- Grill temperature: A grill holding a steady 400°F to 450°F cooks more predictably than one with frequent temperature swings.
- Starting temperature: A steak taken directly from the refrigerator may take slightly longer. Letting it sit briefly while the grill preheats is optional, but the steak does not need to reach room temperature before cooking.
- Grill type: Gas grills often provide consistent heat, while charcoal grills may develop hotter and cooler zones that affect cooking time.
- Internal temperature: Time is a useful guide, but a food thermometer is the most reliable way to determine when the steak is ready.
>>> Read more: How Long to Grill Burgers at 400°F For Perfect Result
4. FAQs About Grilling Filet Mignon
These quick answers cover a few common questions about how long to cook filet mignon on grill and other timing details that often come up when grilling.
How long to cook filet mignon on grill at 400?
At 400°F, a 1-inch filet mignon may take approximately 8 to 12 minutes total, depending on the desired doneness and actual grate temperature.
A 1½- to 2-inch filet generally needs more time. Sear both sides, then finish it over indirect heat if necessary. Start checking a thick filet after about 10 minutes and continue until it reaches the target internal temperature.
Do you flip filet mignon on the grill?
Yes. Flip the filet after the first side develops good browning and releases easily from the grate.
You may turn it once or several times; flipping more than once does not cause the juices to escape. Use tongs rather than piercing the steak repeatedly with a fork.
Should you cook filet mignon by time or temperature?
Use both, but let temperature make the final call. Time helps you estimate, while a thermometer gives the most reliable result for thick cuts, uneven heat, or steaks that started cold.
5. Conclusion
In short, how long to cook filet mignon on grill depends on the steak’s thickness, grill heat, cooking method, and desired doneness. A 1-inch filet may take around 8 to 12 minutes, while a 1½- to 2-inch cut often needs approximately 10 to 18 minutes, sometimes with part of that time over indirect heat.
For the most reliable result, check the center with a food thermometer instead of relying on time alone. For USDA food-safety guidance, cook the steak to at least 145°F before removing it from the grill and let it rest for at least three minutes before serving.
