Group Rent Split Calculator
Geometric-weighted index using Bed Area × Temp Preference × Driveway Usage × Fuel Impact
“Zero” pushes index toward users when driveway weight > 0.
Fuel uses gallons ≈ miles ÷ MPG; more fuel used = less rent (inverted).
Weights (auto-normalized to sum 1.0)
sum = 1.00 | exponents → b:0.60 t:0.20 d:0.10 f:0.10
Example: 60/20/10/10 → bed dominates, others moderate.
Results (weights normalized; geometric combination)
Total Rent: $—
| Person |
A (in²) |
bᵢ |
tᵢ |
dᵢ |
fᵢ |
score sᵢ |
Share % |
Rent $ |
bᵢ = Aᵢ/mean(A); tᵢ uses normalized soft-square of |Tᵢ−median(T)|; dᵢ by driveway mode; fᵢ inverted from gallons (more fuel = lower factor). Score sᵢ = bᵢ^w_b · tᵢ^w_t · dᵢ^w_d · fᵢ^w_f.
Tip: if your crew wants driveway/fuel charged only to users, set their weights higher and choose the strict modes.