River Flow Rate Calculator Estimate river discharge in CFS and CMS from

Guyline Length Calculator Estimate shelter guyline cut length, total cord, stake radius,

Mechanical Advantage Calculator Estimate theoretical MA, real-world actual MA, required haul force,

Rope Working Load Calculator Estimate working load limit, derated breaking strength, knot-adjusted

Rappel Rope Length Calculator Estimate minimum rope, recommended rope, pull-tail length, and

Camp Stove Boil Time Calculator Estimate how long your camp stove needs