1 report
$7.50
How much rainwater can your roof collect?
An accurate calculation based on real precipitation data for your exact address.
- 1Enter an address or coordinates
- 2Add your roof area and roof material
- 3Get the full report right away
Water that would otherwise run away
An average house roof receives tens of thousands of gallons of rain every year. By collecting the rainwater you can use it for many purposes in and around your home.
Your rainwater can be used for:
Toilet
Laundry
Cleaning
Garden
Shower
Car wash
Outdoor cleaning
Plants
About 15,800 gallons of rainwater
can be collected from a 1,075 sq ft roof
400
car washes
800
showers
That's roughly 400 car washes or 800 showers — all from your own roof.
See your rainwater report across the whole year
Example based on 10 years of historical rainfall data
You can collect
per year
Average rainfall
Potential saving
Roof material
90 % collection
Best month
Weakest month
Pricing and Report Packages
Choose a single report or a package with multiple reports. Larger packages offer a lower price per report.
50 reports
$290
$5.80 per report
100 reports
$525
$5.25 per report
500 reports
$2,350
$4.70 per report
Choose how to calculate
Calculate by address
Enter your street address and we look up coordinates and local rainfall automatically.
Calculate nowCalculate by coordinates
Have latitude and longitude? Enter them directly for a calculation anywhere in the world.
Calculate nowHow it works
1
Fill in the form
Address or coordinates, roof area in square feet and roof material.
2
Pay securely
A one-off fee via secure payment. VAT according to your country.
3
Get the full report
The result appears on screen straight away and is emailed to you with a receipt.
Latest news
Collect rainwater from a downspout – how to do it
Collecting rainwater directly from a downspout is a simple way to make use of water from your roof. With a rain barrel, the right connection and a simple filter, you can use the rainwater for purposes such as watering your garden.
Read more
How to collect rainwater – a simple guide
Collecting rainwater is a simple way to make use of water that would otherwise run from your roof into storm drains or the ground. With the right roof area, gutters and storage container, rainwater can be used for garden irrigation and other purposes where drinking water is not needed.
Read more