Rainwater Potential
0 L
Estimated collection from your last calculation
SMART WATER MANAGEMENT
Every drop today.
Every drop today.
A better tomorrow.
Discover how much rainwater you can collect and take a smarter step towards water conservation.
Simple. Sustainable. Smart.
YOUR WATER, YOUR FUTURE
Save water.
Save tomorrow.
Small changes can make a meaningful difference.
80%
Assumed efficiency
1 L
Per mm per m²
Make rain work for you.
Estimate, plan, and manage your rainwater in one place.
Roof Area
— m²
Area entered in the calculator
Rainfall
— mm
Rainfall entered in the calculator
RAINWATER CALCULATOR
Calculate your potential.
Enter your roof area and rainfall to get an estimate.
YOUR ESTIMATED COLLECTION
0 litres
Your estimated result will appear here.
Formula: Roof area × Rainfall × 0.8 collection efficiency. This is an estimate, not a guaranteed amount.
WHY RAINSMART?
A smarter way to save water.
Start with simple information and make informed choices.
Understand Your Rain
Estimate the rainwater your roof could collect during rainfall.
Plan Your Resources
Use your estimate to think about storage and everyday water needs.
Build Better Habits
Keep gutters clean, prevent leaks, and reuse water appropriately.
Every drop counts.
Start exploring your rainwater potential today.
Try the Calculator →