Free Engineering Tools

Free Water Treatment Calculators

Engineering-grade tools for industrial water treatment professionals. No login required.

Client-Side · No Data Sent 10 Calculator Suites 38+ Individual Calculators No Login Required
Calculator Suites

Choose Your Application

Each suite bundles multiple related calculators for a specific water treatment system. All calculations run locally in your browser — no account, no data collection.

Site Survey

Site Survey Tool

Document any system — steam boiler, closed loop, cooling tower, RO or demin — with setpoints, chemical feed & a built-in sales/contact-mapping analysis. Generate a PDF or download a blank template.

Cooling Tower

Cooling Tower Tools

CoC, blowdown, evaporation, drift, LSI/RSI, chemical dosing, retention time

Closed Loop

Closed Loop Systems

System volume, inhibitor charge, glycol protection, consumption modeling

Reverse Osmosis

Reverse Osmosis

Recovery, salt rejection, flux, concentrate LSI, normalized permeate flow

Thermal Desalination

Thermal Desalination

GOR, performance ratio, brine concentration, TBT scaling risk

Steam Boiler

Steam Boiler

CoC, blowdown heat loss, steam purity, O₂ scavenger dosing, condensate, silica

Demineralization

Demineralization

SAC/SBA sizing, mixed bed polisher, CO₂ degasser

Water Softener

Water Softener

Softener sizing, salt efficiency, hardness leakage

Filtration

Filtration

Media filter sizing, backwash rate, cartridge sizing, UF membrane sizing

Unit Converter

Unit Converter

Hardness, alkalinity, flow, pressure, temperature, ions, TDS, volume

General Tools

General Tools

Chemical feed pump sizing, pH/acid dosing estimator

Heat Exchanger

Heat Exchanger

U coefficient, LMTD, cleanliness factor, NTU-effectiveness, fouling analysis for shell & tube, plate & frame, and surface condensers

Chiller

Chiller

COP, kW/ton, condenser & evaporator heat duty, approach temps, fouling resistance, compressor lift for centrifugal, screw & absorption

Legacy Tool

Classic Calculator
Cooling Water Calculator (Classic)
Open
Expert Analysis

Need expert analysis beyond these calculators?

These tools handle the math. When your system needs a deeper diagnostic — root cause analysis, program optimization, or independent audit — that's where we come in.