A kite winch allows a kite to be pulled-down from a high-elevation with reduced effort. The kite winch includes first and second sprockets coupled by a chain. The second sprocket has a larger diameter than the first sprocket. A spool for retaining kite string may be coupled with the second sprocket. A handle may be coupled with the first sprocket. When the handle is turned, the first sprocket engages the chain which in turn engages the second sprocket thereby turning the spool pulling-down the kite. An internal ratcheting mechanism within the first sprocket may selectively allow rotation of the first sprocket in one direction. A locking pin may selectively lock the second sprocket wheel to hold the string at a constant length. One or more adjustable chain tensioners may reduce slack in the chain by exerting at least a slight pressure on the chain.