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Call now0212 428 00 85
Engineering tools

Water treatment calculators

With Today Arıtım's free calculators, you can convert water hardness between units and calculate softener resin volume, reverse osmosis capacity and filtration tank sizes at a preliminary feasibility level. The results are approximate; final sizing is done with a water analysis and an on-site survey.

  • 4 free calculators
  • All results with a single sign-up
  • Engineer review

Calculators

A single sign-up unlocks the results of all four tools; your calculations are passed on to our engineering team.

01

Water hardness unit converter

Convert between French (°fH), German (°dH) and English (°e) hardness, ppm CaCO₃ and mmol/L, and see your water's hardness class.

Enter the values from your water analysis report. If you don't have a report, request a free water analysis.

•••°fH
•••°dH
•••ppm CaCO₃
•••mmol/L
°e (English hardness)
•••
Hardness class
•••
Your results are ready

Register your company details once to unlock the results of all four tools and have your calculation passed on to our engineer.

02

Softener resin sizing

The resin volume, salt per regeneration and tank configuration required for your flow rate, daily operating time and inlet hardness.

Enter the values from your water analysis report. If you don't have a report, request a free water analysis.

•••Daily water consumption
•••Daily hardness load
•••Required resin volume
•••Salt per regeneration
Recommended configuration
•••
Your results are ready

Register your company details once to unlock the results of all four tools and have your calculation passed on to our engineer.

03

Reverse osmosis (RO) capacity calculator

System capacity, feed and concentrate flow rates and the estimated product water TDS, based on the amount of product water you need.

Enter the values from your water analysis report. If you don't have a report, request a free water analysis.

•••Required RO capacity
•••Feed water flow rate
•••Concentrate (reject) flow rate
•••Estimated product water TDS

Your results are ready

Register your company details once to unlock the results of all four tools and have your calculation passed on to our engineer.

04

Filtration system sizing

Filter area, tank diameter and quantity, media volume and backwash requirements for sand/multimedia, activated carbon or iron-manganese filters.

Enter the values from your water analysis report. If you don't have a report, request a free water analysis.

•••Filtration rate
•••Required filter area
•••Tank configuration
•••Total media volume
Media bed
•••
Backwash flow rate (per tank)
•••
Backwash water (per cycle)
•••
Recommended backwash frequency
•••
Tank and valve type
•••

Your results are ready

Register your company details once to unlock the results of all four tools and have your calculation passed on to our engineer.

Send us your results; we will prepare final sizing and a quote based on a water analysis.

Request a quote

Register your company details

A single sign-up unlocks all calculators; your details are used only for quotes and technical evaluation.
FAQ

Common questions about the calculations

To interpret your results, you can reach our engineer by phone or WhatsApp.

What is the difference between reverse osmosis (RO) and ultrafiltration (UF)?

Ultrafiltration uses a membrane with 0.01 micron pores to retain suspended solids, turbidity, bacteria and viruses; dissolved salts pass through. It is used for pretreatment and disinfection.

Reverse osmosis, on the other hand, separates 90-99% of dissolved salts and ions with a semi-permeable membrane; it is preferred in boiler, process, pharmaceutical and food applications that require near-pure water. In most industrial plants, UF works together with RO as its pretreatment stage.

Free water analysis

Let's choose the right system for your facility together

We collect your sample, analyse it in our own laboratory and present a system proposal tailored to you in a report based on the results.

  • Our own laboratory
  • On-site survey
  • Written report
Request an analysis 0212 428 00 85