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Pesticide Calculator

Pesticide / Herbicide Mix

Dilute any concentrate to the correct rate for your sprayer size. Outputs in fl oz, mL, or tablespoons.

Calculate Your Mix Amount

Enter your tank size and label rate to find out exactly how much concentrate to add.

💡 The label rate is always printed on the product label — look for "Mix X oz per gallon" or similar. Always use the label rate; never guess or round up.
Concentrate to Add
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⚠️ Always read the full product label before mixing. Wear appropriate PPE (gloves, eye protection) when handling concentrates. Keep out of reach of children.
Gear & Tips
What You'll Need
My Spreader Pick
Top Pick
ECHO RB-60 Heavy-Duty Broadcast Spreader
“The spreader I use on my own lawn — nothing else comes close.”
  • 60 lb hopper — covers up to 25,000 sq ft per load
  • Factory-calibrated spread pattern up to 8 ft wide
  • Maintenance-free gear case — no grease, no hassle
  • Foot-operated side deflector keeps product off driveways & beds
  • 10" pneumatic tires handle any terrain with ease
  • Powder-coated steel frame — 5-year consumer warranty
Check Price & Availability →
Affiliate link — I earn a small commission at no extra cost to you. I only recommend gear I personally use.

Spraying Tips

Spray on calm days with wind under 10 mph to avoid drift. Avoid spraying before rain. Apply herbicides when weeds are actively growing for best results. Never spray near water features or storm drains.