For plumbing contractors
Plumbing contractor proposal software.
Water heater swaps, repipe jobs, drain replacements, bathroom rough-ins. Quote it in the truck, send a branded proposal before the homeowner gets your competitor's call back.
Three problems Plumbing contractors keep hitting.
Problem 1
Tankless vs tank water heater has a $1,200 spread depending on the install — and you need to walk the homeowner through the decision in your proposal.
ProJobCalc: AI generator writes the comparative scope: 'Option A: 50-gal tank, $X. Option B: tankless w/ recirc, $Y. Tradeoff: longer install, higher upfront, lower lifecycle cost.' Customer reads + decides without a second call.
Problem 2
Repipes involve 20+ line items (fittings, valves, hangers, insulation, pressure test, permit, drywall patch) and missing one in the quote costs you the job's margin.
ProJobCalc: Plumbing calculator + repipe template (Pro) ensures all the line items are present. Edit the numbers, not the structure.
Problem 3
Emergency calls (burst pipe, leaking water heater) need a quote on the spot — you don't have time to open a laptop.
ProJobCalc: Voice estimator — phone in hand, narrate the scope: '50-gallon gas water heater, 6-foot venting run, expansion tank, permit.' Sage outputs structured line items.
Free Plumbing calculators.
No signup. No tier gate. The calculators below open straight to the math — save the result if you want, or just take the number and move on.
Plumbing Job Calculator
Estimate plumbing service calls, fixture installs, and repipe work.
Labor Burden Calculator
Convert a wage rate into a true burdened cost including taxes, insurance, workers comp, and PTO.
Markup vs Margin Converter
Convert between markup % and margin %. Most contractors confuse them — this tool prevents the $10k-a-year math error.
Change Order Pricing Calculator
Price a change order with extra time, materials, and appropriate markup.
Plumbing Rough-In Calculator
Per-fixture plumbing takeoff — supply LF (PEX or copper), DWV LF, valve count, fitting count, and labor hours by fixture type.
Gas Line Install Calculator
Gas line sizing + material takeoff — BTU-load capacity check, black iron / CSST / polyethylene material, fittings + shutoffs + flex connectors, permit + pressure test + labor.
Septic System Sizing Calculator
Tank capacity (by bedroom count) + drainfield sq ft (by daily flow and soil percolation rate), with conventional, mound, and drip alternative-system pricing.
Water Heater Sizing Calculator
Tank-style sizing by first-hour rating (occupants); tankless sizing by GPM × temperature rise. Includes unit cost, install, and hidden tankless-retrofit costs.
Benchmarks (US averages, 2025).
Water heater swap (gas tank)
$1,500 – $3,200
Tankless install (gas)
$3,500 – $6,000
Whole-home repipe (PEX)
$8,000 – $18,000
Typical margin
30–45%
These are reference ranges. Your actual pricing depends on local labor + material costs + your overhead. Use the calculator above for a defensible per-job number.
Plumbing questions.
Do you support drain-cleaning service businesses?
Yes for the proposal side, but the bread-and-butter $200 drain calls don't typically warrant a written proposal. ProJobCalc shines on the planned work — water heater swaps, repipes, fixture replacements, additions — where the customer wants something written before committing.
Can I quote two options (tank vs tankless) in one proposal?
Yes. The AI generator handles A/B option proposals — describe both, get both written out side-by-side. Customer picks, you mark which option was accepted, the won-amount flows into your analytics.
What about copper vs PEX pricing in the calculator?
The plumbing calculator handles both material paths with current 2025 cost benchmarks. Material choice toggles the per-foot material rate; labor stays the same since both run at the same speed in most repipe scenarios.
Ready to send plumbing proposals faster?
Free tier is real. 21 calculators, unlimited estimates, up to 5 saved — no card to enter. If the AI proposal generator + voice estimator look useful, Pro is $19/mo with a 14-day trial.