Elevation Calc
Elevation differences and slope drops, worked out on site.
Enter two elevations to see the difference and which point is higher, or enter a run and a slope to get the drop. Built for concrete, grading and site crews checking levels against a benchmark.
Levels and slopes without the scratch paper.
Difference between two points
Enter two elevations and get the difference, with a clear note of which point is higher.
Name your points
Label each point, like Benchmark, Slab NW or Form top, so the result and your history make sense later.
Slope and drop
Enter a run in feet and inches and a slope percentage to get the drop, for drains, patios and driveways.
Decimal or fraction
Show results in decimal feet, or in feet, inches and fractions, whichever your plans and tape use.
History
Your last 50 elevation and 50 slope calculations are saved on your iPhone, named and dated.
Private
No accounts, ads or tracking. Nothing you enter ever leaves your iPhone.
See it in action
Which point is higher, and by how much 
The drop over a run at any slope
Get Elevation Calc
One purchase. No ads, no subscriptions. Requires iOS 17.6 or later.
Questions
How do I enter elevations?
As decimal numbers, the way they appear on most plans and survey sheets, like 102.35. Runs on the slope screen can be feet and inches, like 8' 6", or inches.
Do I need an internet connection?
No. Elevation Calc does all its maths on your iPhone, so it works anywhere on site.
Which iPhones does it run on?
Any iPhone running iOS 17.6 or later.
What data does the app collect?
None. Elevation Calc has no accounts, ads or analytics, and it never connects to the internet. Your saved calculations stay on your iPhone. Read the full privacy policy.