Plutocalc+ Water 4+

Engineering calculator

Daniel Peig

Designed for iPad

    • 4.0 • 1 Rating
    • $4.99



Plutocalc is the most complete and popular problem solver suite for water treatment, wastewater, hydraulics, environmental chemistry and unit conversions.

Plutocalc+ is a premium version of the free Plutocalc packed some extras. For iOS, only the premium version is available.

- 103 solvers
- 2670+ different calculations
- Self explanatory diagrams
- Internal databases for chemicals and standards
- Results as you type, nothing is faster than that!
- Multiple languages: English, Portuguese and Spanish
- Available for multiple platforms
- 100% offline, no data connection required
- Advertisement free

NOTE: If after the update the program loads to a blank screen, just reinstall to fix.

Solver list:

- Angle
- Area
- Conductivity and resistivity
- Density and concentration
- Energy
- Flow - mass
- Flow - volumetric
- Flux and rates
- Forces
- Hardness in water
- Length
- Mass
- Power
- Pressure
- Speed
- Temperature
- Time
- Volume

- Buffer tank capacity
- Cylinder volume
- Cone volume
- Cube volume
- Circle properties (radius, diameter, perimeter and area)
- Horizontal cylindrical tank volume
- Triangle properties with sides/angles determination
- Municipal plants flow estimation
- Nominal pipe sizes and wall thickness
- Sieve sizes according
- Rainfall volume

Energy and power
- Head loss in pipes
- Open channels or partially filled pipes
- Orifice plates with incompressible fluids
- Parshall flumes flow measurement
- Rectangular flumes flow measurement
- Flow adjustment for dosing/metering pumps
- Pump power and energy consumption
- Blowers and compressors power and energy consumption
- Mixing velocity gradient
- Reynolds number and speed

- Boiler water quality and blowdown
- Periodic table of elements with oxidation states
- Ionic Balance and Conductivity
- CO2 conductivity in pure water
- TOC, COD and KMnO4 relations
- Langlier Saturation Index - LSI
- Ryznar Stability Index - RSI
- Silt Density Index - SDI
- Modified Fouling Index - MFI
- Sludge Volume Index - SVI

- Chemical dosing flow, mass and concentrations
- Dry chemical dosing flow
- Chemical solutions density database
- Water properties (viscosity, density)
- Gases properties (density and molecular weight)
- Oxygen solubility in water
- Multiple streams blending
- Specific gravity, Baumé, Brix and API relations

Adsorption and Ion Exchange
- Sorption/Exchange capacity
- Empty Bed Contact Time and BV/h
- Ion Exchange regeneration
- Ion Exchange softener design

Filters and membranes (Reverse Osmosis, Ultrafiltration and Nanofiltration)
- Cylindrical filter rate and speed
- Microfiltration / Ultrafiltration comparison and normalization
- Reverse Osmosis membranes and datasheets comparison
- Reverse Osmosis plant normalization and performance comparison
- Reverse Osmosis / NF skid design
- Recovery
- Recovery for membranes in series
- Normalized permeability
- Granular media head loss (sand, resins, anthracite, carbon and custom)
- Granular media backwash expansion rate

- pH equilibrium for: Ammonia, Sulfates, Boric Acid, Sulfides, Silicic Acid, Phosphates and Nitrous Acid
- Equilibrium for Carbonates with temperature dependence
- Disinfection with Chlorine, Chlorine Dioxide, Chloramines and Ozone
- Disinfection with Chlorine for Giardia Cysts
- Disinfection with UV
- Iron oxidation and precipitation
- Manganese oxidation and precipitation
- Sludge from chemicals
- Food-to-microorganisms ratio - F/M
- Ultimate BOD

- Surface loading rate - circular
- Surface loading rate - rectangular
- Hydraulic retention time - HRT
- Solids retention time - SRT
- Solids loading rate
- Volumetric solids loading rate
- Return activated sludge recycle - RAS
- Discrete sedimentation
- Sludge concentration and mass
- Sludge age

- Ordinary annuity
- Annuity due
- Compound annual growth rate - CAGR
- Interest rate conversions
- Simple interest

What’s New

Version 15.1

Version 15.1
- Fixed mg/L to lb/ft³ unit conversion in the chemical dosing calculator

Ratings and Reviews

4.0 out of 5
1 Rating

1 Rating

App Privacy

The developer, Daniel Peig, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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