Weight

The condensed weight-assessment list:

Total                                  40lb 15.1oz  18.6Kg  Decimal percent 
   Water                               7lb 12.0oz   3.0Kg   0.19*   
      2L Water (reservoir)             4lb 6.5oz    2.0Kg   0.11*   
      1L Water (bottle)                2lb 3.3oz    1.0Kg   0.05*   
   Cooking                             1lb 11.5oz   0.8Kg   0.04*   
      Denatured alcohol (~16oz)        14.6oz       414g    0.02    
   Tech                                6lb 6.9oz    2.9Kg   0.16*   
      Power & Charging                 15.8oz       447g    0.02    
      GPS                              6.7oz        190g    0.01    
      Camera                           3lb 6.6oz    1.0Kg   0.08*   
         55-200mm + caps               13.1oz       370g    0.02    
         Nikon D40x Body, straps, cap  1lb 5.7oz    0.0Kg   0.03    
         18-55mm + caps                8.1oz        230g    0.01    
      Audio                            6.6oz        188g    0.01    
      Data Storage                     10.3oz       292g    0.02    
   Health & Hygene; Tools              1lb 14.7oz   0.9Kg   0.05*   
   Food                                7lb 9.9oz    3.5Kg   0.19*   
      Dehydrated Dinners               1lb 7.8oz    0.0Kg   0.04    
         BP Beans & Chile for 2        7.4oz        210g    0.01    
      Trail mix (8oz bag)              11.3oz       320g    0.02    
      Trail mix (partial 16oz bag)     1lb 2.9oz    0.0Kg   0.03    
      6x Granola bars                  10.2oz       288g    0.02    
      Peanut butter + container        8.4oz        238g    0.01    
      6x Bagels                        1lb 7.5oz    0.0Kg   0.04    
   Storage & Shelter                   7lb 12.9oz   3.5Kg   0.19*   
      Sleeping Bag                     3lb 7.7oz    1.0Kg   0.09*   
         Bag                           3lb 5.4oz    1.0Kg   0.08*   
      Sleeping pad                     15.2oz       430g    0.02    
         Thermarest NeoAir (regular)   14.6oz       415g    0.02    
      Tent (Sierra Designs LightYear)  3lb 6.1oz    1.5Kg   0.08*   
         Main                          2lb 3.7oz    1.0Kg   0.05*   
            Rain fly                   1lb 0.4oz    465g    0.03    
            Enclosure                  1lb 2.0oz    0.0Kg   0.03    
         Poles                         8.7oz        247g    0.01    
   Clothing                            3lb 4.2oz    1.5Kg   0.08*   
      Tee shirt (CG)                   6.7oz        190g    0.01    
      Raincoat (eVent)                 13.1oz       370g    0.02    
      Socks                            1lb 0.0oz    454g    0.02    
   Pack                                4lb 7.0oz    2.0Kg   0.11*   
      REI Ridgeline 65                 4lb 3.7oz    1.0Kg   0.10*

See also the full list and the Python to generate it.