For 2000' wind...
Double the speed & add 30 degrees.
When you're planning, though, bear in mind that upper winds provided by met are
forecast and not measured. It can be totally different to the forecast. You also get gusts up there just as you do on the ground.
Here's a tip; if you're flying from or near an airport with commercial airliner operations, when there's an airliner (or bizjet) on frequency ask ATC to ask them for a "spot wind" as they pass the level you're interested in.
Obviously, such a request would be of lower priority than doing the ATC, but as an ATCO myself I would certainly do my best to help.
ap
