HPR Calculations Spreadsheet is a spreadsheet based tool that makes it as easy as possible to design a high power rocket, by compiling all the necessary calculations into one user friendly place.

After spending 3 years learning the ins and outs of High Power Rocketry, I got sick of rummaging through textbooks, forum posts, and countless rules of thumb to figure out the math required to design a high power rocket. So I decided to save myself and my team the trouble by compiling every calculation necessary to build a basic high power rocket into one singular, easy to use spreadsheet.

This spreadsheet has now been in use for over 3 years, and been used for 10+ rockets, including 2 L3 competition rockets.

- Parachute Sizing
- Snatch Force
- Shock Cord Strength
- Shock Cord Length
- Fin Flutter
- Black Powder Amounts for Ejection Charges
- Altimeter Vent Hole Sizing
- Thrust to Weight Ratio