Salmon Cook Time Calculator
Cook minutes and safe temp for salmon from fillet thickness.
What it does
Salmon cooks from the outside in, so thickness sets the clock more than weight does. A tall fillet needs extra minutes for heat to reach the center, while a flat tail cooks through fast. Time by inches keeps portions consistent.
The tool above turns thickness into minutes with the classic 10 minute per inch rule, then pairs it with the FDA target of 145 F (63 C). Enter inches or centimeters, read the minutes, and verify with a thermometer at the thickest point.
That target comes from federal food safety guidance: fin fish should reach 145 F and rest briefly. USDA consumer pages repeat the same finish temp for fish. The rest matters because the center keeps warming after the pan or oven lets go.
Use the answer as a starting point, not a contract. Oven quirks, starting temp, and skin or glaze shift results by a few minutes. When the flesh flakes and the center reads 145 F, it is ready; when it still looks glassy inside, give it more time.
How to use
- Pick imperial (inches) or metric (cm).
- Measure fillet thickness at the tallest point.
- Enter the thickness and read cook minutes.
- Heat to 145 F (63 C) in the center.
- Rest 3 minutes before cutting, so juices settle.
- Check thick portions on uneven fillets.
Formula
- thickness
- Thickest point of the fillet, in inches (cm / 2.54 for metric).
- 10 min/in
- Ten minutes of heat per inch of thickness.
- 145 F
- FDA fish target, 145 F equals 63 C.
Measure the thickest point. Metric thickness converts first: inches = cm / 2.54, then the same 10 minute factor applies. Thin fillets under 0.5 in still need full temp, so check early rather than cutting time in proportion.
Worked example
Example: 1.0 inch fillet
A 1.0 inch salmon fillet roasted in a hot oven.
- Thickness is 1.0 in at the thickest point.
- Time: 1.0 x 10 = 10 min.
- Target: 145 F (63 C) in the center.
- Rest 3 min off heat; heat carryover finishes the center.
- Serve when flesh flakes and looks opaque throughout.
Reference table
| Thickness | Time | Check |
|---|---|---|
| 0.5 in | 5 min | Flakes, 145 F center |
| 1.0 in | 10 min | Opaque, 145 F center |
| 1.5 in | 15 min | Verify with thermometer |
| 2.0 in | 20 min | Thermometer required |
| Stuffed or rolled | Add 3 to 5 min | Probe the fish, not filling |
Limits
- Rule suits fillets near 0.5 to 2 inches. Very thick or stuffed cuts need a thermometer, not scaling alone.
- Starting temp matters: fridge cold adds minutes versus room tempered.
- Method shifts browning and edges; temp still rules.
- Shiny marinades can fake doneness by color.
Common mistakes
- Timing by weight instead of thickness.
- Skipping the rest, then cutting and losing juices.
- Probing the thin tail and overcooking the loin.
- Cooking from frozen with fresh times.
- Trusting color under dark glaze without a thermometer.
Try it yourself
Quick checks. Answers sit tucked under each question.
Time for a 3.8 cm fillet?
3.8 / 2.54 = 1.5 in. Time is 15 min to 63 C (145 F).
Time for a 1.5 inch fillet?
1.5 x 10 = 15 min to 145 F (63 C), plus a 3 minute rest.
Questions
What internal temperature is safe for salmon?
145 F (63 C) at the thickest part, followed by a short rest. Thin tail pieces may read higher sooner; pull by the thick end and let carryover finish the work.
Does the 10 minute rule work for thick king salmon?
Yes, within reason. The 10 minute rule bends for very thin or very thick fish, so use a thermometer past 1.5 inches and add 2 to 3 minutes per extra half inch.
How do I know it is done without a thermometer?
Opaque flesh that flakes with a fork, plus 145 F on a thermometer. Translucent dark centers need more time. Color alone can mislead under heavy seasoning.
Can I use the same time from frozen?
No. Frozen fish cooks unevenly and the outside dries before the center sets. Thaw overnight in the fridge, pat dry, then time from an even thickness.
Does air frying or pan searing change the time?
Air fryers run hot and fast, so start checking 2 minutes early. Pan searing adds a crust in fewer minutes per side. Keep thickness as the input and adjust method, not the target temp.
Do stuffed fillets need longer?
Yes. Stuffed, bacon wrapped, or parchment parcels trap steam and slow the center. Add a few minutes and verify 145 F in the fish itself, not the filling.
Sources
- FDA: select and serve fish safely
- USDA: food safety and fish basics
- FoodSafety.gov: safe cooking temperatures