Bleach tools
Bleach PPM Calculator
Size any disinfecting batch instantly—100 to 10,000 ppm with 5.25%, 6%, or 8.25% bleach.
Supports milliliters, liters, ounces, and gallons. Enter any custom bottle size and the ppm math recalculates instantly.
Result
For 1,000 ppm using 6% bleach in 1 L, add 15 mL of bleach, then top up with water to 1 L.
For aqueous solutions, 1 ppm ≈ 1 mg/L. Volume needs solute density and source concentration to convert from mass.
How it works
The calculator converts ppm targets into exact bleach volumes by multiplying the ppm by liters to find the milligrams of pure chlorine required. It then divides by the percent sodium hypochlorite in your jug and adjusts for density so the measurement reflects real-world bottles.
Pick 5.25%, 6%, or 8.25% bleach, set a ppm (100 through 10,000), and enter any container size in mL, L, oz, or gallons. Results update instantly, including the printable label and QR code for field teams.
Every result includes an instant label download, QR code, and the copy-ready mix line you can stick on the bottle.
Quick doses · Popular bottles
Assumes 6% unless noted| Container | Bleach strength | Target ppm | Bleach to add | Milliliters |
|---|---|---|---|---|
| 1 L | 6% | 1,000 | 15 mL | 15 |
| 0.5 L | 6% | 1,000 | 8 mL | 8 |
| 1 gal | 6% | 1,000 | 58 mL | 58 |
| 1 gal | 6% | 500 | 29 mL | 29 |
| 32 oz | 6% | 200 | 3 mL | 3 |
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
Is ppm the same as mg/L?
For dilute aqueous bleach solutions, 1 ppm equals 1 mg of available chlorine per liter of solution. The calculator uses that relationship—ppm × liters = milligrams—to size the dose, then reverses the math based on your bleach percent.
How do I make 1,000 ppm in 1 L? in 1 gal?
With 6% bleach you need 15 mL per liter. For a gallon, measure 58 mL (about 58 mL) and fill the rest with water.
Which bleach % should I pick?
Check your label: regular household bleach is typically 5.25–6%, while concentrated jugs list 8.25%. Choose the closest preset so the density correction keeps the ppm on target. If the product lists a different strength, pick the nearest option and verify with a test strip.
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