Base Camp Planning Calculator
Base camp infrastructure from personnel and duration.
About this calculator
This calculator sizes base camp infrastructure -- tents, water, latrines, showers, power, and perimeter -- from headcount, duration, and climate. Every facility count scales directly with personnel: tents needed is personnel divided by 16 (the capacity of a GP Medium tent) rounded up (line 14), latrines is personnel divided by 8 rounded up (line 22), and shower points is personnel divided by 50 rounded up (line 25). Daily water draws from a climate-indexed rate -- 12 gallons per person in cold conditions, 15 in temperate, 20 in hot/arid (line 17) -- multiplied by personnel (line 18), and total water for the deployment multiplies that daily figure by duration in days (line 19).
Power requirement is roughly 3 kW per 100 personnel, rounded up (line 28). Perimeter is derived from living space (72 square feet per person, line 13) tripled to account for support areas and buffer space, then treated as a square footprint to estimate perimeter footage (lines 31-32). Duration and climate zone only enter the water calculation; every other facility count here is set by personnel count alone, regardless of how long the camp will operate or what climate it sits in.
Safety Notice
This calculator provides estimates only. Always follow manufacturer guidelines, industry standards, and applicable safety codes. Incorrect application of these calculations could result in injury or property damage. When in doubt, consult a qualified professional.
Inputs
Results
Tents (GP Medium)
32
How to Use This Calculator
- Enter the total personnel count to be housed at the base camp.
- Set the expected duration (days) of the operation.
- Select climate zone: 0=Cold, 1=Temperate, 2=Hot/Arid — affects water and cooling requirements.
- Review Tents (GP Medium), Daily water (gal), Latrines, Shower points, and Power (kW) to plan facility layout.
- Use Perimeter (ft) to plan force protection and camp security requirements.
How the result changes with Personnel
| Personnel | Tents (GP Medium) |
|---|---|
| 250 | 16 |
| 375 | 24 |
| 750 | 47 |
| 1,250 | 79 |
What each input means
- Personnel
- Total personnel to be housed.
- Duration (days)
- Expected duration of operations.
- Climate (0=cold, 1=temp, 2=hot)
- 0=Cold, 1=Temperate, 2=Hot/arid.
What each result means
- Tents (GP Medium)
- General Purpose Medium tents needed.
- Daily water (gal)
- Daily water requirement.
- Latrines
- Latrine facilities needed (1:8).
- Shower points
- Shower stations needed (1:50).
- Power (kW)
- Generator capacity needed.
- Perimeter (ft)
- Approximate camp perimeter.
How this is calculated
Worked example, using the default values
- Identify Input ParametersPersonnel = 500, Duration (days) = 90, Climate (0=cold, 1=temp, 2=hot) = 1 = 3 input(s) provided
- Calculate TentsTents = ceil(personnelCount / 16)32 = 32
- Calculate Daily waterDaily water = personnelCount * waterGalPerDay7500 = 7500
- Calculate LatrinesLatrines = ceil(personnelCount / 8)63 = 63
Engine last updated . Checked against 3 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
Does the length of the deployment change how many tents or latrines I need?
No. Tents, latrines, shower points, and power requirement are all computed from personnel count alone -- duration days appears nowhere in those four formulas (lines 14, 22, 25, 28). Duration only multiplies into total water requirement, scaling the daily water figure by how many days the camp will run (line 19); every other output is fixed once personnel count is set.
How does climate zone change the water estimate?
Climate zone selects a per-person daily water rate from a three-value table: 12 gallons in cold conditions, 15 in temperate, and 20 in hot or arid conditions (line 17), which then multiplies by personnel count for daily water and by duration for total water (lines 18-19). Moving from cold to hot roughly doubles the water requirement at the same personnel count and duration.
Why does doubling personnel not exactly double the tent count?
Tents needed rounds personnel divided by 16 up to the next whole tent (line 14), so a personnel count that does not divide evenly by 16 always uses a partial tent's worth of capacity. Doubling personnel does not exactly double the ceiling-rounded tent count, though the difference shrinks as personnel count grows and the rounding overhead becomes a smaller share of the total.
What drives the perimeter estimate?
Perimeter starts from living space of 72 square feet per person (line 13), triples that figure to account for support infrastructure and buffer space around the living area (line 31), and then estimates a square footprint's perimeter as four times the square root of that total area (line 32). It is a rough planning figure for force protection, not a surveyed camp layout.
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