Count full and reduced toilet flushes
A two-person household estimates three reduced and one full flush per person daily. Enter the two button types separately so their volumes stay visible.
Open CalculatorInputs and calculation
| Tool input | Value |
|---|---|
| Currency | USD |
| Volume or billing unit | m³ |
| Activity measurement | Fixed volume per event |
| Liters per event | 3 |
| Occurrences per person per day | 3 |
| People (1 for shared use) | 2 |
| Days or equivalent sessions | 30 |
| Price per billing unit (USD) | 3 |
3 L per event × 3 × 2 × 30 = 540 L. Divide by 1,000 for m³ and multiply by 3 for USD 1.62.
Tool result · USD 1.62
| Tool input | Value |
|---|---|
| Currency | USD |
| Volume or billing unit | m³ |
| Activity measurement | Fixed volume per event |
| Liters per event | 6 |
| Occurrences per person per day | 1 |
| People (1 for shared use) | 2 |
| Days or equivalent sessions | 30 |
| Price per billing unit (USD) | 3 |
6 L per event × 1 × 2 × 30 = 360 L. Divide by 1,000 for m³ and multiply by 3 for USD 1.08.
Tool result · USD 1.08
| Tool input | Value |
|---|---|
| Currency | USD |
| Volume or billing unit | m³ |
| Activity measurement | Fixed volume per event |
| Liters per event | 6 |
| Occurrences per person per day | 4 |
| People (1 for shared use) | 2 |
| Days or equivalent sessions | 30 |
| Price per billing unit (USD) | 3 |
6 L per event × 4 × 2 × 30 = 1440 L. Divide by 1,000 for m³ and multiply by 3 for USD 4.32.
Tool result · USD 4.32
What the comparison shows
The mixed pattern uses 900 L, 540 L below the all-full comparison. A single rated volume would hide the mix.
Assumptions and limits
Use documented flush volumes. The calculation covers intentional flushes and excludes a leaking fill valve.