Exhibit 12

Williams Partners L.P.

Computation of Ratio of Earnings to Fixed Charges

	Nine Months Ended
	September 30, 2015
	(Millions)
Earnings:
Income before income taxes	$	281
Less: Equity earnings	(236		)
Income before income taxes and equity earnings	45
Add:
Fixed charges:
Interest incurred	640
Rental expense representative of interest factor	7
Total fixed charges	647
Distributed income of equity-method investees	507
Less:
Interest capitalized	(40		)
Total earnings as adjusted	$	1,159
Fixed charges	$	647
Ratio of earnings to fixed charges	1.79