Free gutter calculator by address
Enter an address and confirm the house to estimate gutter footage, numbered eave runs and downspouts from Google Solar aerial roof data. Story count helps estimate downspout pipe length. The published gutter test is a starting reference; check every run on site before ordering.
Updated
Runs
- North edge30 ft
- East edge20 ft
- South edge49 ft
- West edge20 ft
Measurements from Google aerial roof data, measured by the same engine Measured Bid prices from. No prices are shown here. Confirm every number on site.
At a glance
| Input | What you get |
|---|---|
| Address, confirmed house and stories | Numbered gutter runs, total feet, downspout count, pipe feet and imagery year |
| Stories | Estimated downspout pipe feet |
How to calculate gutter footage and downspouts
Every gutter estimate starts with two numbers: the feet of gutter and the number of downspouts. The calculator works them out in this order.
- Find every roof edge where water runs off the house. Skip edges that drain onto a lower roof.
- Measure each run and add them up. That's the feet of gutter.
- Count each separate gutter: at least one downspout, with one for every 35 ft or part of it.
- Use at least 2 downspouts, even on a small house.
- Allow about 10 feet of downspout pipe per story, plus 2 feet for the elbows and extension, on every drop.
MeasuredOur model house, one story
- Run 1, north edge
- 30 ft
- Run 2, east edge
- 20 ft
- Run 3, south edge
- 49 ft
- Run 4, west edge
- 20 ft
- Feet of gutter
- 118 ft
- Separate gutters: one per 35 ft or part of it
- 5 downspouts
- 5 drops × (10 ft + 2 ft)
- 60 ft of pipe
Run lengths are rounded for display. The total adds the unrounded lengths, as the calculator does.
How this measures
- Google Solar roof data derived from aerial imagery supplies each roof plane's area, pitch and direction. The result includes the imagery year when available.
- The free tool derives eaves from roof planes. Downspouts use spacing and story settings; hidden eaves need an on-site check.
We tested quoted gutter footage against 9 invoiced gutter jobs. The jobs came from one gutter company that uses Measured Bid. Eight were full replacements and one was a repair and guards job. The median absolute error was 14.2% and the mean absolute error was 16.2%. We also used these jobs to tune the engine. Treat every number here as a starting point and confirm it on site.
Measurement methods and published testsCompanies using Measured Bid for gutters
Sacramento Gutter Guard
Rocklin Gutter Guard
Boise Gutter Guards
Check it on site
Aerial data gets you a fast, consistent number. Measure the house before you order material or sign a price.
What the aerial can't see
- Gutters hidden under trees or deep shade.
- Additions built after the imagery was taken. The result shows the imagery year.
- Roof sections missing from the data. The result flags a house with less than 90% of its roof mapped.
- Short gutters where an upper roof ends above a lower one, on some tall one-story houses.
- Detached garages and sheds. The calculator measures the house you confirm.
- Downspout placement and the pipe length for each drop.
How accurate it is
We compared the footage Measured Bid quoted with the footage on the final invoice.
9 invoiced gutter jobs. The jobs came from one gutter company that uses Measured Bid. Eight were full replacements and one was a repair and guards job. A small sample, so ranges in Measured Bid widen when the data is weaker.
See how we testedPrice the job with your rates
The calculator stops at feet and counts. Gutter jobs are priced per foot with a rate for each story, plus downspouts, guards, removal and a job minimum.
FAQ
How many downspouts do I need?
Each separate gutter gets at least one downspout, with one for every 35 feet or part of it and at least two per house. Typed footage uses the total length only. Change the feet per downspout to match your gutter size and how much roof drains to each outlet.
Can I measure gutters from satellite?
Yes, from overhead imagery. Enter the address and the calculator reads the roof planes Google has mapped from aerial imagery. It finds the edges that drain off the house, measures each run in feet and counts the downspouts. Check the runs on site before you order.
Is the gutter calculator free?
Yes. Measuring from an address needs a free Measured Bid account, with 5 measurements free and no credit card. The typed-footage calculator has no limit.
How accurate is the footage?
We tested quoted gutter footage against 9 invoiced gutter jobs. The jobs came from one gutter company that uses Measured Bid. Eight were full replacements and one was a repair and guards job. The median absolute error was 14.2% and the mean absolute error was 16.2%. We also used these jobs to tune the engine. Treat every number here as a starting point and confirm it on site.
Does it include a detached garage?
No. The calculator measures the house you confirm. In Measured Bid, an estimate can add a detached garage or shop with a tap on the map.
Can I put a gutter calculator on my website?
Yes. Measured Bid's website price form measures the house the same way and shows the homeowner a price range from your rates. You get the lead with the runs and footage attached.
Related pages and tools
Price gutters from an address
Type the address. Your free account measures it, and you can price it with your own rates when you're ready.