Calculators
Free, no sign-up, and they show their working. Every default is visible and editable, and every one of them says what it assumes rather than handing you a confident number and leaving you to find out.
Launch cost: aerotow vs winch
What does a launch actually cost our club to provide?
Treasurers, committees and club officers
Will I fit?
Am I too heavy — or too light — to fly a glider?
Newcomers, students and pilots
Density altitude
What is a hot day doing to my launch?
Pilots, tow pilots and ops officers
Own, share, or club glider?
Is buying a glider actually cheaper than renting one?
Pilots thinking about ownership
Which soaring forecast covers your region
Which weather product should I actually pay for?
Cross-country and club pilots
Cost to solo
What will it cost me to learn to fly a glider?
Newcomers and students
The reasoning behind them
Each of these has a written guide behind it explaining where the numbers come from and what they assume — part of a set on the practical side of running a gliding club.
Read the guides →More coming, slowly and on purpose
We would rather have three calculators that are right than a dozen that look impressive. If there's a number you work out by hand every season and wish you didn't have to, tell us what it is.