Exhibit 12

Williams Partners L.P.
Computation of Ratio of Earnings to Fixed Charges

	Three months ended
	March 31, 2011
	(Millions)
Earnings:
Net Income	$	307
Less: Equity earnings, excluding proportionate share from 50% owned investees and unconsolidated majority-owned investees		(15	)
Net income before equity earnings		292
Add:
Fixed charges:
Interest accrued, including proportionate share from 50% owned investees and unconsolidated majority-owned investees		108
Rental expense representative of interest factor		2
Total fixed charges		110
Distributed income of equity-method investees, excluding proportionate share from 50% owned investees and unconsolidated majority-owned investees		17
Less:
Capitalized interest		(2	)
Total earnings as adjusted	$	417
Fixed charges	$	110
Ratio of earnings to fixed charges		3.79