—
min
145
°F
0.5
lb
5
qt
—
min
145
°F
0.5
lb
5
qt
Crab is one of the sweetest and most prized seafoods, but the variety of species and preparation states (live vs. pre-cooked, hard-shell vs. soft-shell) means cooking times and methods vary enormously. The Crab Cooking Calculator provides accurate time guidance for the five most common crab varieties: Dungeness, blue crab, king crab legs, snow crab legs, and soft-shell crab.
An important distinction: most king crab and snow crab sold in fish markets and grocery stores in the United States is already fully cooked and frozen. These products were cooked and processed on the fishing vessel shortly after harvest to ensure freshness. Reheating pre-cooked crab legs requires only 5–10 minutes of steaming — just enough to heat through to 145°F without overcooking the delicate meat. Overcooking pre-cooked king or snow crab legs makes them rubbery and stringy.
Dungeness and blue crabs are often sold live or fresh, requiring full cooking. The traditional preparation is steaming: Dungeness crabs steam 15–20 minutes depending on size, while blue crabs need 12–15 minutes. Steaming is preferred over boiling because the crab is not submerged in water, resulting in sweeter, more flavorful meat. The classic Old Bay-seasoned steaming liquid is iconic in Mid-Atlantic blue crab culture.
Soft-shell crabs are blue crabs that have recently molted and not yet re-hardened their shells — the entire crab is edible, shell and all. They are extremely perishable and best cooked within hours of purchase. Pan frying in clarified butter for 3 minutes per side is the standard preparation, producing a crispy, caramelized exterior.
Crab is done when the shell turns bright red/orange and the meat is opaque white at 145°F. Crab legs are done when they are heated through and steam rises from the meat when cracked open.
Live Dungeness/blue crab: steam 12–22 min or boil 10–18 min depending on weight. Pre-cooked king/snow crab legs: steam 5–10 min or boil 4–8 min to reheat. Soft-shell crab: pan fry 3 min per side. Safe temp: 145°F for all crab. Meat yield: king crab 50%, snow crab 45%, soft-shell 85%, Dungeness 25%, blue crab 20%.
Visual doneness cues: shell turns bright red/orange, meat is opaque white. For pre-cooked crab legs: steam just until heated through — internal meat should be hot to the touch when cracked open. Dungeness and blue crab: all joints should be pink-red and leg meat should pull cleanly from the shell. Do not overcook pre-cooked legs.
Inputs
Results
2 lb live Dungeness crab. Steam 18 min over boiling water. Yields ~0.5 lbs (8 oz) of sweet crab meat.
Inputs
Results
Pre-cooked frozen king crab legs. Steam 7 min just to heat through. Yields ~0.75 lbs (12 oz) meat — 50% yield from shell weight.
Yes — virtually all king crab sold in the US is pre-cooked and flash-frozen at sea. You are simply reheating it. Steam for 5–7 minutes or bake at 400°F for 10 minutes until heated through. Overcooking ruins the delicate texture and sweet flavor.
Steaming is the preferred method — the crab is not submerged in water, so it retains more flavor and moisture. For 1.5 lbs of pre-cooked king or snow crab legs, steam for 6–8 minutes until heated through. Serve immediately with melted butter and lemon.
Place an inverted heatproof bowl or a metal colander inside a large pot. Add 2 inches of water and bring to a boil. Place crab on the improvised rack, cover tightly, and steam. Alternatively, steam in the oven: place crab in a deep baking dish with 1/2 inch of water, cover tightly with foil, and bake at 400°F.
Old Bay is a blend of celery salt, black pepper, red pepper, and paprika created in Maryland in the 1940s. It became the traditional seasoning for Chesapeake Bay blue crabs — added to the steaming water or sprinkled directly on crabs before steaming. Its savory, spicy profile perfectly complements sweet crab meat.
For Dungeness: twist off the claws, pull back the apron (tail flap), and lift off the top shell. Remove the gills (grey feathery structures) and discard. Break the body in half and use a pick or skewer to extract meat from chambers. Crack claws with a mallet. Blue crabs follow a similar process but are smaller.
King crab legs: approximately 50% meat by weight (thick shells with abundant meat). Snow crab clusters: about 45% meat. Dungeness whole crab: approximately 25% of live weight is edible meat. Blue crab: about 15–20% yield. Soft-shell crab: nearly 85% — the entire animal is consumed.
Live crabs should be cooked within 24 hours of purchase. Keep them in a cool, well-ventilated container (never in fresh water or a sealed container) in the refrigerator or surrounded by ice. Live crabs kept too long weaken and die; dead crabs that are not immediately cooked are unsafe to eat.
Crisp, mineral whites pair beautifully with crab's sweet meat. Chablis (unoaked Chardonnay), Albariño, or Sauvignon Blanc are ideal. Champagne is a classic luxury pairing, particularly with king crab and drawn butter. Avoid heavy, oaky whites or red wines which overwhelm the delicate flavor.
Yes. Freshly cooked crab meat freezes well for up to 3 months in airtight containers or vacuum-sealed bags. Cooked whole crabs in their shells can be frozen for up to 3 months but are best consumed within 1 month for optimal texture. Thaw overnight in the refrigerator before reheating.
King crab (Paralithodes camtschaticus) is much larger, with legs up to 5 feet span, and has a richer, more robust flavor. Snow crab (Chionoecetes opilio) is smaller with a more delicate, slightly sweeter flavor. King crab is substantially more expensive. Both are sold pre-cooked and frozen in the US market.
Roboculator Team
The Roboculator Team explains calculations, planning tools, and practical formulas in clear language for real-life situations.
How helpful was this calculator?
Be the first to rate!
