Calculators organised by engineering discipline, grouped by the work rather than by the formula. Pick a category to see what is inside. Specialist packs are supplied separately by arrangement.
RAS Oxygen & Biofilter Sizing
Explore →Friction Loss (Hazen-Williams)
Explore →Drip Lateral Design
Explore →Cable Sizing (AS/NZS 3008)
Explore →Reverse Osmosis Design
Explore →Centre Pivot Design · IRR-006
Explore →Open Channel Capacity (Manning)
Explore →4–20 mA Loop Scaling
Explore →Langelier Saturation Index
Explore →Dam Storage Volume
Explore →Activated Sludge Design
Explore →Pressure Reducing Valve Selector
Explore →Lifecycle Cost & Energy
Explore →Media Filter Selector
Explore →Confined-Space Ventilation
Explore →Domestic Pump Selector
Explore →Solar Pump & Array Sizing
Explore →Pool Pump & Turnover
Explore →Engineering Unit Converter
Explore →ISO 2858 Endsuction Pump Selection
Explore →Find the right starting point
Tenselo groups related calculations into practical workflows for Australian and New Zealand water projects. Start with the question you need to answer, then review the required inputs, assumptions, worked examples and design limitations before using the account-based calculator.
Calculate crop water demand, irrigation runtime, drip-lateral performance, centre-pivot capacity, pipe velocity, friction loss and pump duty. Begin with irrigation calculators, pipe hydraulics or the centre and center pivot design guide.
Interpret water-test results, compare preliminary treatment stages and size water softening, iron removal, reverse osmosis and ultrafiltration duties. Browse the water-treatment catalogue and its water-analysis interpretation guide.
Establish pump flow and head, compare domestic and bore-pump duties, check pressure-control valves and calculate cable voltage drop or irrigation-solenoid wiring. Explore pump calculations, valve sizing and electrical calculators.
Work through recirculating aquaculture duties, oxygen and biofilter sizing, rainfall intensity, drainage capacity, open channels, tanks and storage. Review the aquaculture tools and stormwater and civil-drainage calculators.
Public pages provide static examples and calculation explanations. Live project calculations and client-ready reports remain inside the authorised Tenselo application. See the engineering guides, methods and limitations and sample calculation reports.
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