Plumbing Tools
24 free tools built for your trade. Real terminology, real benchmarks, real formulas.
Technical Calculators
Pipe sizing, flow rates, and system design
Water Heater Sizing
Size tank or tankless water heaters by household demand and peak GPM.
Pipe Size Calculator
Size supply pipes by fixture units with IPC code tables and friction loss.
Flow Rate Calculator
Calculate GPM from pipe size and pressure using Hazen-Williams equation.
Drain Slope
Calculate drain slope per IPC code with Manning's equation velocity check.
Pipe Volume
Calculate gallons of water in any pipe by diameter and length.
Gas Line Sizing
Size gas piping per IFGC tables by BTU load and pipe length.
Water Pressure
Calculate available pressure at any fixture with elevation and friction loss.
Fixture Unit Calculator
Total WSFU and DFU for any building with IPC code pipe sizing.
Business & Pricing
Margins, rates, and job costing
Profit Margin
See your real margin on any job. Pre-loaded with plumbing benchmarks.
Labor Rate
Find out what you actually need to charge per hour to be profitable.
Service Call Pricing
Price a service call with plumbing-specific parts and labor.
Flat Rate Builder
Build flat-rate prices for common repairs. Compare to national averages.
Parts Markup
Calculate sell price and margin on plumbing parts at any markup.
Job Pricing
Price a full plumbing job with fixtures, labor, and materials.
Business Valuation
Estimate what your plumbing business is worth.
Overhead Calculator
Know your true break-even by adding up all plumbing business costs.
Templates & Documents
Invoices, estimates, and checklists
Invoice Generator
Professional plumbing invoices with fixture fields and warranty terms. PDF ready.
Estimate Template
Good/Better/Best estimates with fixture specs and permits. PDF ready.
Work Order
Complete work orders with pressure test results and safety checklists.
Maintenance Checklist
Annual plumbing inspection checklist. Interactive + printable PDF.
Service Agreement
Build maintenance contracts with tiered pricing. Revenue projections included.
Inspection Report
Professional inspection reports with color-coded ratings.
Sales Tools
Customer-facing calculators
All 24 tools are 100% free.
Pick a tool above and get to work.