Cathole Depth Calculator Plan a backcountry cathole by depth, diameter, soil type,

Water Treatment Drop Count Calculator Estimate treatment drops for camp bottles, hydration

Camp Soap Dilution Calculator Mix concentrated camp soap into practical field bottles,

UV Purifier Battery Cycles Calculator Estimate how many UV treatment batches, liters,

Wag Bag Count Calculator Estimate how many human-waste pack-out bags to carry

Iodine Dose by Water Temperature Calculator Estimate 2% tincture drops, tablet equivalents,