Calder extended his point-scoring streak to seven games. He has three goals and eight assists during that span, often setting up linemate Mark Bell.
Bell's six-game goal-scoring streak ended Wednesday, but his two assists gave him eight goals and five assists in his last seven games.
Against the Kings, however, it was Calder's turn to finish.
"We were getting the puck to the net," Calder said. "That's how you score goals and that's what we were doing tonight on the power play."
Calder and Bell have been skating on the same line for much of this season. Recently, their third linemate -- at least in even-strength situations -- has been rookie Rene Bourque.
Chicago coach Trent Yawney inserted Martin Lapointe with Calder and Bell on Blackhawks power plays on Wednesday, however.
"We're reading off each other pretty well," Calder said. "We've played together nearly five years now and we know each other."
Calder had his first two-goal game this season and the sixth of his career. He has never scored three goals in an NHL game.
Matt Ellison also scored a power-play goal for Chicago, which converted 3-of-7 chances in snapping a three-game losing streak.
Khabibulin, who signed a $27 million, four-year contract with Chicago in August, lost a bid for his first shutout with the Blackhawks when Eric Belanger scored a power-play goal with 5:54 remaining in the third period.
Los Angeles' Pavol Demitra added a goal with 1.5 seconds left, but the Kings lost back-to-back games for the first time this season.
Still, Khabibulin made several timely, point-blank saves at key points during the game.
"Those help the team win the game and whatever I can do to help, I want to do," Khabibulin said. "It's nice to get a shutout, but right now it's more important to get the two points."
Kings goalie Mathieu Garon, who beat the Blackhawks twice earlier in November, made 32 saves.
Los Angeles converted 1-of-8 power-play chances.
"The story of the game was they played much better than us," Kings coach Andy Murray said. "We didn't deserve to win.
"Their power play was good, ours was not very good. Their penalty killing was obviously better than ours and we haven't played very well for two games," he said.
The Blackhawks took a 2-0 lead late in the first period with pair of power-play goals 56 seconds apart.
Calder opened the scoring with exactly two minutes left in the first. Parked at the right edge of the crease, he jumped on a rebound of Lapointe's backhand shot.
Ellison made it 2-0, firing in Tyler Arnason's feed from across the top of the crease.
Calder added his second goal midway through the second period to extend Chicago's lead to 3-0. After Garon made a pad save on Bell's shot from the slot, the rebound squirted to Calder at the left post and he tucked it in.
Belanger cut it to 3-1 with a power-play goal with 5:54 left in the third. Cutting through the slot he redirected Mike Cammalleri's drive from the left point.
With 1.5 seconds left, Demitra scored from a sharp angle.
The Blackhawks signed forwards Andy Hilbert and Mikhail Yakubov. Hilbert had been playing at AHL Norfolk since being acquired from Boston on Nov. 6. Yakubov, Chicago's first-round pick (10th overall) in the 2000 NHL entry draft, had been playing in Russia. To make room on the roster, the Blackhawks assigned forward Shawn Thornton to Norfolk. ... Chicago forward Pavel Vorobiev sat out with a sore ankle. ... Los Angeles left winger Ryan Flinn missed his third game with a concussion. Kings right winger Tom Kostopoulos and defenseman Mike Weaver were healthy scratches.