Field notes / Weight planning
Read a daily consumable weight forecast
Understand exactly what the declining load chart includes, and where a simple model stops.
The forecast is intentionally small and transparent: the same entered amount is used every day, with no resupply events. It helps compare a two-day and four-day version of one packing list. It does not determine how much food, fuel or drinking water you need.
The formula behind each bar
For a consumable row, multiply grams per unit by quantity per day. Add those rows to get daily use. At departure the load is base + daily use × trip days. At the end of day d, the load is base + daily use × (trip days − d).
Try it with your own numbers
If base gear is 6,000 g and daily consumables are 700 g, a four-day plan starts at 8,800 g. The end-of-day values are 8,100, 7,400, 6,700 and 6,000 g. Open the accessible text table under the chart to read every value without relying on colour or bar height.
Water needs a deliberate choice
Water carried between refill points does not necessarily decline evenly across an entire trip. The example therefore treats its departure water allowance as a fixed base row and labels that assumption. You can model a truly consumed, non-refilled amount as a consumable instead, but do not apply both approaches to the same water.
What is outside this model?
Resupply, waste retained in the pack, unequal daily consumption, changing water levels and transfer of shared equipment are not simulated. Empty containers should be separate fixed rows when they remain. If you need those events, make separate plans for different sections and compare them. Do not interpret the final bar as a guaranteed real pack weight.