Spotlight: Works Digital’s Magic Land Value Calculation Formula
Works Digital built a land income calculator as a marketing tool for one of their customers. See how it makes sorcerous use of GP Advanced Calculations.

Spotlight Function
Land Income Calculator
Spotlight Plugins
So yeah, the property market’s in a frenzy right now. And did you know there’s a list of ways for landowners, when teaming up with companies, to maximize earnings on their property by implementing conservation-friendly practices? I’m talking about big-time, cold hard cash.
“But Cole, how am I to know how much money I can make from my land?”
Great question, wizard. Phil Ward, a calculator-building-extraordinaire, has your answer in one of his greatest works: a calculator that does just that. It’s powered by GP Advanced Calculations. Let’s explore how it works.
How it works
AKA.Land (pronounced ‘acre’) brings together investors and sellers with the intention of creating a transparent marketplace for those seeking to capitalize and invest in land through:
- Traditional avenues (sales, leases, land-based businesses) and
- Potentially lucrative eco-friendly income sources such as biodiversity net gain, nitrate offset, and carbon credits.
Through his white label agency Works Digital, Phil Ward built this land income calculator that helps users understand exactly how much they can get from specific plots of land.
The calculator (a form built with Gravity Forms) is simple on the surface: you select how much land you have, which credits that could apply, and where the land is.

The real magic is happening beneath the surface.
Hidden Number-Crunching with GP Advanced Calculations
Phil set up Hidden fields within the form that runs pretty advanced calculations based on the amount of land selected, and the type of credit chosen. Each field on the form has a Hidden equivalent that utilizes conditional (if, elsif, else) formulas to calculate annual income totals based on the land location and credit type, which are then fed into a grand total field (also hidden), which sums each field’s calculation.

Curious about setting up a multi-tiered calculation like Phil’s? Check out our guide on dynamic pricing.
Here’s an example of the calculation Phil runs on the conversion of land area (Measurement Unit field) into a standardized unit to help calculate the Carbon credit field. Phil does this to convert the input number to a squared number to then multiply by the value given for a proper estimate.
if ( F13==1 && F82.1==1 ):
round(F15 / 4046.86 * 50 * 3 )
elseif( F13==2 && F82.1==1 ):
round(F15 / 0.00404686 * 50 * 3 )
elseif( F13==3 && F82.1==1 ):
round(F15 / 0.0015625 * 50 * 3 )
elseif( F13==4 && F82.1==1 ):
round(F15 * 50 * 3 )
elseif( F13==5 && F82.1==1 ):
round(F15 * 0.404686 * 50 * 3 )
else:
0
endif;
On top of supporting conditional statements, Advanced Calculations lets you compare strings in calculation conditions, test for multiple conditions, check for empty (and non-empty) values, and more.
It’s a similar story throughout the form’s Hidden fields — Phil’s running numerous calculations on each. I’d recommend loading up the form and playing around with it yourself to get a better idea of how each calculation works. Download the JSON here!
“The great thing is that if Biodiversity Net Gain, Nitrate or other values change in the future it doesn’t break the calculator. We like to build in adaption and extensibility where possible.”
Phil also runs conditional logic throughout the form to show fields conditionally based on address type, location, type of credit chosen, and more.
Once a prospect has entered the essential information, they go through a basic signup and Terms of Service process to get their calculated total sent to them via email.

That’s it! Through this income calculator AKA.Land is able to generate new directory listings — and with a better idea of how much prospects can earn annually from a piece of land, AKA.Land can convert these prospects into customers.
“We’ve built numerous marketing calculators using Gravity Wiz tools. Advanced Calculations combined with GF Populate Anything makes it quick and efficient to create website marketing attractors. Best part? If we hit a roadblock, GW support is exceptional – genuinely invested in helping us achieve our solutions.”
Thank you, Phil, for sharing! Be sure to check out some of the work Phil has done over at Works Digital and Priodev.
Have questions or a similar build you’d like to share? Let us know in the comments!