Ham Cooking Time Calculator
Plan your holiday ham from oven preheat to carving. Enter ham weight, style, and glaze method for a full timeline.
1 lb ≈ 0.454 kg. Include bone-in weight.
Cook time
81 min
1.4 hours at 325°F
Glaze schedule
30 min
Apply near finish
Rest & target temp
140°F
Rest 15 min before carving
Bone-in, fully cooked (reheat) tips
- Place ham cut-side down in a roasting pan with a bit of water; cover loosely with foil.
- Brush glaze in the last 20–30 minutes with foil removed to create caramelization.
- Insert a thermometer in the thickest part away from bone for accurate readings.
How to Use This Calculator
Enter ham type & weight
The calculator applies minutes-per-kilogram guidelines for bone-in, boneless, or fresh hams.
Select oven temp and glaze timing
Choose your preferred roasting temperature and whether you glaze at the end or throughout the bake.
Follow the timeline
Use the cook, glaze, and rest times to plan serving, carving, and side dish coordination.
Formula
Cook minutes = Weight (kg) × profile minutes per kg
Total timeline = Cook minutes + preheat buffer + rest minutes + glaze adjustments
Example: 4.5 kg bone-in ham → 4.5 × 18 ≈ 81 min cook. Add 30 min preheat/foil handling + 15 min rest.
Tip: Reduce oven temp to 300°F for ultra-tender ham; increase minutes per kg by ~10% if you do.
Full Description
Hams vary widely by curing method and cut. This calculator turns ham weight and type into a precise roasting schedule, including resting and glazing cues. It supports fully cooked hams that need reheating and fresh hams that must cook through to a safe internal temperature.
Use it for holiday planning, catering, or weekly meal prep. Keep a thermometer handy to verify doneness and adjust minutes-per-kilogram for extremely thick or spiral-cut hams.
Frequently Asked Questions
How do I keep ham from drying out?
Cover with foil during most of the bake, add liquid (apple juice or water), and only uncover near the end for browning.
Can I cook ham at higher temperatures?
Yes, but reduce cook time accordingly and monitor closely—higher heat risks scorching sugary glazes.
Do I need to baste?
Basting every 20–30 minutes adds shine but isn’t required if the ham stays covered and glazed properly.
How long can cooked ham rest?
Rest for at least 10–20 minutes before slicing. Tent loosely with foil to retain warmth without trapping steam.