Free tools for pool & construction crews.
Simple calculators and templates for the field. No signup, no fluff, works on your phone. Built by people who actually run jobs.
Pool Volume & Chemical Dosing Calculator
Get your pool's gallons, then exact chlorine, pH, alkalinity, calcium, and stabilizer doses.
Markup vs Margin Calculator
Enter job cost and one number you know. See sell price, profit, markup, and margin side by side.
Estimate & Invoice Generator
Fill the form, print or save a clean estimate or invoice PDF. Nothing leaves your browser.
COI Expiration Tracker
Track sub and vendor insurance certificates. Color-coded 30, 14, and 7 day expiration alerts.
Pool Salt Calculator
Saltwater pool? Get the pounds and 40 lb bags of salt to add to hit your target ppm.
Concrete Calculator
Cubic yards and 60/80 lb bag counts for a slab or footing, with a waste allowance.
Cost Per Square Foot
Enter any two of total cost, area, and price per square foot. Get the third instantly.
Contractor License by State
Do you need a license where you work? Pick your state for the board and where to apply.