FlagHi

FlagHi Golf Calculations helps golfers understand how changing playing conditions affect the distance of their shots. Temperature, elevation, and humidity can all influence carry distance, so a golfer’s familiar stock numbers may not apply from one location or day to another. Launched in app stores in 2013, FlagHi was designed to calculate how much those distances change, giving golfers condition-adjusted figures to support their preparation and play.

FlagHi is reimagining its calculations as a low-cost online service, with a relaunch planned. Its reports compare a golfer’s home conditions with current playing conditions and show both stock and adjusted carry distances. The site shares an example report prepared for a professional golfer competing in the 2025 US Mid-Amateur in Scottsdale, Arizona.

While the online service is in development, golfers, coaches, teams, and caddies who need reports can contact FlagHi to ask about assistance. Visitors can also join the mailing list to share feedback and receive updates about the planned service.