Plumber Tools

Boiler Sizing Calculator

Estimate the boiler heating capacity a building needs from heat loss, floor area

BTU to CFH Converter

Convert between BTU per hour and cubic feet per hour for natural gas and propane

Drain Pipe Size Calculator (DWV)

Size drain, waste and vent pipes from drainage fixture units (DFU), pipe context

Elevation / Static Head Pressure Calculator

Convert elevation and water column height to pressure and back. How many PSI doe

Expansion Tank Sizing Calculator

Size a closed-loop expansion tank from system volume, fluid type, temperature, s

Fixture Unit Calculator (Drainage Load)

Convert toilets, sinks, showers, bathtubs and floor drains into drainage fixture

Flow Rate Calculator

Find water flow rate from pipe diameter and velocity, or measure it with a bucke

Friction Loss Calculator

Calculate friction loss in water piping with the Hazen-Williams formula: psi and

Gas Line Pressure Drop Calculator

Estimate the pressure drop along a natural gas or propane line from flow in CFH,

Gas Pipe Sizing Calculator

Size natural gas piping from total appliance load in CFH, longest run, specific

Grease Trap Sizing Calculator

Estimate grease trap or interceptor capacity from sink bowls, dishwasher flow, d

Head Loss Calculator

Calculate friction head loss per 100 feet of pipe from flow rate, internal diame

Hot Water Demand Calculator

Estimate daily and peak-hour hot water demand from occupants, building type and

PEX, Copper & PVC Converter

Convert a pipe size between PEX, copper and PVC by matching internal bores, so t

Pipe Diameter Calculator

Calculate the required internal pipe diameter from flow rate and target water ve

Pipe Length Calculator

Find the effective length of a pipe run with fittings, or the maximum run a flow

Pipe Material Comparison

Compare PEX, copper, PVC and CPVC side by side for a chosen size and flow: inter

Pipe Schedule Lookup

Look up outside diameter, wall thickness, internal bore, flow area and pressure

Pipe Size Calculator (Flow Rate / Fixture Units)

Find an appropriate nominal pipe size from flow rate, fixture units, target wate

Pipe Volume Calculator

Find the water volume inside a pipe by length and inner diameter. Gallons, litre

Plumbing Job Estimate / Quote Generator

Build a customer-ready plumbing quote from job type, labor hours, part costs, tr

Plumbing Labor Cost Calculator

Estimate plumbing labor cost from job type, hours worked and hourly rate, plus o

Plumbing Service Call Pricing Calculator

Quote a plumbing service call from call-out fee, diagnostic, first-labor hour an

Pressure Drop Calculator

Estimate pressure loss through a plumbing line from flow rate, pipe diameter, le

Radiator BTU Calculator

Estimate the radiator heat output a room needs from dimensions, insulation, clim

Rainwater Harvesting Tank Size Calculator

Estimate recommended rainwater storage capacity from roof/catchment area, rainfa

Water Heater Recovery Rate Calculator

Calculate how fast a water heater recovers hot water from its BTU input, efficie

Septic Tank Size Calculator

Estimate required septic tank capacity from bedrooms, household size, daily wate

Sewer Pipe Capacity Calculator

Calculate wastewater capacity of a gravity sewer or drain pipe using Manning’s e

Slope / Fall Calculator for Drain Pipes

Calculate drain-pipe slope, fall and gradient. Enter length plus slope or fall a

Stormwater Drainage Calculator

Estimate stormwater runoff from catchment area, rainfall intensity and runoff co

Fixture Unit Demand Calculator (Supply Sizing)

Convert plumbing fixtures into water-supply fixture units (WSFU), estimate proba

Tankless Water Heater Size Calculator

Size a tankless water heater from peak hot-water flow and required temperature r

Underfloor Heating Pipe Spacing Calculator

Determine recommended pipe spacing and approximate pipe length for hydronic unde

Vent Pipe Size Calculator

Estimate the required plumbing vent-pipe size from connected fixture units, vent

Water Bill / Cost Estimator

Estimate monthly and annual water and wastewater charges from consumption and lo

Water Filtration System Sizing Calculator

Estimate required filter flow rate, capacity and approximate system size from wa

Water Heater Tank Size Calculator

Size a conventional storage water heater from occupants, bathrooms, peak-hour de

Water Pressure Calculator (Static vs Dynamic)

Compare static water pressure (no flow) with dynamic pressure under flow demand.

Water Softener Sizing Calculator

Determine approximate water softener capacity from household usage, water hardne

Water Usage Calculator (Household / Commercial)

Estimate daily, monthly and annual water consumption for households or commercia

Water Velocity Calculator

Compute water velocity in a pipe from flow rate and internal diameter. Checks de

Well Pump Sizing Calculator

Estimate well-pump flow rate and total dynamic head from household demand, well