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Pump power calculator
Work out kW, pressure or flow for a pressure-washer pump
kW = bar × l/min ÷ 530
kW
bar
l/min
Duty vs a 15 kW pump
Enter two values
Disclaimer. This calculator is a guide only and uses theoretical formulas and standard approximations. GreenSeal (Pty) Ltd accepts no liability for decisions or damages arising from its use. Verify critical values with a qualified technician or engineer.
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Dilution calculator
Mix chemical to a 1:X ratio without the guesswork
1:X → 1 part concentrate + X parts water
1 :
L
Concentrate–L
Water–L
Total–L
Strength–%
Mix proportion
ConcentrateWater
Tip: 0.001 L = 1 ml. For 500 ml of concentrate enter 0.5.
Disclaimer. This calculator is a guide only and uses theoretical formulas and standard approximations. GreenSeal (Pty) Ltd accepts no liability for decisions or damages arising from its use. Verify critical values with a qualified technician or engineer.
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Concentration dilution calculator
Dilute stock to a target % using C1 × V1 = C2 × V2
C1 × V1 = C2 × V2
Safety first. When diluting acids or corrosives, always add acid slowly to water – never water to acid. Wear chemical-resistant gloves, a face shield and an apron, work in a ventilated area and read the product SDS.
%
%
L
L
Stock–L
Water to add–L
Final volume–L
Final mix
StockWater
Disclaimer. This calculator is a guide only and uses theoretical formulas and standard approximations. GreenSeal (Pty) Ltd accepts no liability for decisions or damages arising from its use. Verify critical values with a qualified technician or engineer.
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Pressure unit converter
Convert between bar, PSI, kPa, MPa and kgf/cm²
1 bar = 14.504 PSI = 100 kPa = 0.1 MPa
Where this sits (0–300 bar)
Garden hose ~3 barDomestic washer ~130 barIndustrial 200+ bar
Disclaimer. This calculator is a guide only and uses theoretical formulas and standard approximations. GreenSeal (Pty) Ltd accepts no liability for decisions or damages arising from its use. Verify critical values with a qualified technician or engineer.
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Flow rate unit converter
Convert l/min, l/h, m³/h and US GPM
1 l/min = 60 l/h = 0.06 m³/h = 0.2642 US GPM
Disclaimer. This calculator is a guide only and uses theoretical formulas and standard approximations. GreenSeal (Pty) Ltd accepts no liability for decisions or damages arising from its use. Verify critical values with a qualified technician or engineer.
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Nozzle calculator
Solve for nozzle size, flow or pressure
flow (l/min) = 0.2279 × size (gpm) × √bar | size 055 = 5.5 gpm at 4000 psi
l/min
bar
Nozzle size–
Flow–l/min
Pressure–bar
Jet reaction force–N
Equivalents
–––
Nearest standard nozzle sizes
Enter two values
Matches the Wash Nozzle Performance Chart (20–275 bar). Sizes are rated in US gpm at 4000 psi (275 bar): 04 = 4.0 gpm, 045 = 4.5 gpm, 055 = 5.5 gpm, 10, 11.5, 12.5, 15 = that many gpm. Example: 12.5 l/min at 100 bar = size 055. Flow is the total flow; with several nozzles it is split evenly. Jet reaction force = gpm × √psi ÷ 18.92 lb.
Disclaimer. This calculator is a guide only and uses theoretical formulas and standard approximations. GreenSeal (Pty) Ltd accepts no liability for decisions or damages arising from its use. Verify critical values with a qualified technician or engineer.
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Detergent cost comparison
Compare real cost per litre of ready-to-use solution
cost per litre RTU = price per litre ÷ (1 + dilution X)
Product A
R
1 :
Product B
R
1 :
Product A per litre RTU–
Product B per litre RTU–
Cost per litre ready-to-use
Enter price and dilution for both products to compare.
Disclaimer. This calculator is a guide only and uses theoretical formulas and standard approximations. GreenSeal (Pty) Ltd accepts no liability for decisions or damages arising from its use. Verify critical values with a qualified technician or engineer.
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Temperature converter
Convert between Celsius, Fahrenheit and Kelvin
°F = (°C × 9/5) + 32 | K = °C + 273.15
°C
°F
K
0–120 °C scale
0 freezing40 warm wash60 hot wash100 boiling
Disclaimer. This calculator is a guide only and uses theoretical formulas and standard approximations. GreenSeal (Pty) Ltd accepts no liability for decisions or damages arising from its use. Verify critical values with a qualified technician or engineer.
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Motor current estimator
Estimate full-load current and a suitable breaker size
3-phase: I = P ÷ (√3 × V × PF × η) | 1-phase: I = P ÷ (V × PF × η)
kW
V
Full-load current–A
Suggested breaker–A
Breaker headroom over FLA
Enter power and voltage
Leave power factor and efficiency blank for defaults (0.85 and 0.90). Breaker is sized at 125% of FLA and rounded up to the next standard size. A qualified electrician must confirm final selection, cable size and starting method.
Disclaimer. This calculator is a guide only and uses theoretical formulas and standard approximations. GreenSeal (Pty) Ltd accepts no liability for decisions or damages arising from its use. Verify critical values with a qualified technician or engineer.
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