Mixing calculator
Pick a teardown, then fill a sprayer or cover a measured surface. We return millilitres or grams of concentrate, water, batch cost, and money saved versus the branded pack. For a quick patio or lawn size check, try the area estimator first.
Measuring a patio or lawn? Open the area estimator.
Mixing desk
Dilution calculator
Switch between filling a sprayer and covering a measured surface. Figures are educational estimates from the listed ratio — always check the SDS.
- Concentrate
- 500 ml
- millilitres of liquid
- Water
- 4.5 L
- carrier volume
- Batch cost
- £2.00
- 5 L working solution
- Saved vs retail
- £32.00
- 94% · retail £34.00
Estimated coverage at the listed rate: 25 m².
DupeStack provides chemical concentration data and educational mixing guides only. Wellness pages compare food supplements, not medicines or prescribed treatments. Always review the supplier Safety Data Sheet (SDS) and comply with UK Health and Safety Executive (HSE) and COSHH regulations when handling concentrated substances. Mixing and storage are at your own risk. Some links are affiliate advertisements (Amazon Associates, eBay Partner Network, and Awin when those programmes are live). Commissions do not change listed concentrations or calculator output.