We are very fortunate that there is a very easy way to determine the length of an antenna for any frequency as long as we scale

This page allows you to calculate the length for a given antenna measurement and use the results to design your antenna on a different band. The formula for frequency scaling is simple... ( Original design frequency / New design frequency ) * Old measurement length

Be sure to keep the measurements all in the same units, if the original frequency is in MHz the new frequency must also be in MHz. Also if the original length is in meters, the new scaled length will also be in meters.

Your new length is