Bleach tools
500 ppm Bleach Calculator
Stay on-code for food prep areas—instant 500 ppm math with labels and QR codes.
Supports milliliters, liters, ounces, and gallons. Enter any custom bottle size and the ppm math recalculates instantly.
Result
For 500 ppm using 6% bleach in 1 gal, add 29 mL of bleach, then top up with water to 1 gal.
For aqueous solutions, 1 ppm ≈ 1 mg/L. Volume needs solute density and source concentration to convert from mass.
How it works
500 ppm bleach is the standard food-contact sanitizing strength in many health codes. This page opens right on that recipe so you can tweak bleach strength or bottle size without losing the math.
Need a different target? Launch the bleach ppm calculator.
Every result includes an instant label download, QR code, and the copy-ready mix line you can stick on the bottle.
Quick doses · 500 ppm presets
Assumes 6% unless noted| Container | Bleach strength | Target ppm | Bleach to add | Milliliters |
|---|---|---|---|---|
| 1 gal | 6% | 500 | 29 mL | 29 |
| 32 oz | 6% | 500 | 7 mL | 7 |
| 1 L | 6% | 500 | 8 mL | 8 |
Why this calculator
- Matches common CDC 1000 ppm and food-service 200–500 ppm recipes without manual math.
- Supports 5.25%, 6%, and 8.25% bleach so the density adjustment keeps ppm on target.
- Lets you size any bottle from 100 mL sprayers to 5 gallon buckets while keeping the ratio exact.
Need presets? Open the 200, 500, and 1000 ppm shortcuts or bookmark this page as your go-to bleach ppm calculator.
FAQs
How much bleach for 500 ppm in 1 gallon?
With 6% bleach, measure 29 mL (≈29 mL) and fill to a gallon with water.
What about a quart spray bottle?
32 oz at 500 ppm needs 7 mL.
Is 500 ppm safe for food-contact surfaces?
Yes—500 ppm is cited by many health departments for sanitizing countertops and utensils. Always rinse if your local code requires it and mix fresh daily.
All supported options
- 5.25% household bleach
- 6% household bleach
- 8.25% concentrated bleach
- 100 ppm
- 200 ppm
- 500 ppm
- 1,000 ppm
- 5,000 ppm
- mL
- L
- oz
- gal
More bleach ppm calculators
Jump straight into a preset: 1000 ppm, 500 ppm, or 200 ppm bottle builders.
References & Safety
- CDC: Cleaning and disinfecting with bleach (surface contact time guidance)
- CDC: Chemical Disinfectants – Sodium hypochlorite (% ↔ ppm background)
- WHO: Cleaning & disinfecting surfaces in non-health care settings (0.1% / 1,000 ppm)
- WHO: Cleaning and disinfection of environmental surfaces (PDF)
Keep surfaces visibly wet for at least 1 minute when product labels do not specify a contact time, and always follow local health guidance and product directions.
Last reviewed: 2024-06-01