Detergent Dilution Ratio Calculator
Calculate how much detergent concentrate and water you need based on your desired dilution ratio and total solution volume.
Formula
Given a dilution ratio of D : W (detergent parts : water parts) and a desired total volume V:
- Total Parts = D + W
- Detergent Volume = (D / (D + W)) × V
- Water Volume = (W / (D + W)) × V
- Concentration (%) = (D / (D + W)) × 100
Example — 1:32 ratio, 1 litre total:
Detergent = (1/33) × 1 L ≈ 0.0303 L (30.3 mL)
Water = (32/33) × 1 L ≈ 0.9697 L (969.7 mL)
Assumptions & References
- The dilution ratio D:W expresses parts of concentrate to parts of water by volume (not by weight).
- Both detergent concentrate and water are assumed to have the same density (≈ 1 g/mL), which is standard for water-based detergents. High-viscosity or solvent-based concentrates may differ slightly.
- Common dilution ratios: all-purpose cleaners 1:32–1:64; degreasers 1:4–1:10; floor cleaners 1:64–1:128; disinfectants per manufacturer label.
- Always follow the manufacturer's recommended dilution ratio for safety and efficacy.
- Reference: ISSA (Worldwide Cleaning Industry Association) dilution control guidelines; EPA Safer Choice product labelling standards.
- Volume unit conversions used: 1 US gal = 3.78541 L; 1 US pt = 0.473176 L; 1 US fl oz = 0.0295735 L.