Pesticide Mix Calculator

Mix the Right Amount. Every Time.

Pest Calculator is the essential tool for pest control technicians, lawn care specialists, and PCOs who need fast, accurate pesticide dilution on the job. No Wi-Fi, no account, no ads—just the math you need to get back to work.

NEW IN THIS VERSION:
Metric & Imperial Toggle: Support for Liters (L), Milliliters (mL), and Hectares.
Dark Mode: Default high-contrast theme for working in dark crawlspaces or bright sunlight.

THREE CALCULATION MODES:
oz/gal (or mL/L): Enter your label rate and tank size.
Area-Based (sq ft/acre): Enter rate, area, and application volume.
% Solution: Enter desired concentration with optional Active Ingredient % adjustment.

BUILT FOR THE FIELD:
100% Offline: Works in attics, basements, and rural job sites with zero signal.
Zero Latency: Results update in real-time as you type—no "Calculate" button required.
Precision Options: Get the exact chemical amount (2 decimal places) AND a "Practical Value" rounded to the nearest 0.25 oz for easy pouring.
Tank Presets: Quick-select 1, 2, 4, 25, 50, or 100 gallons, or enter a custom size.
History & Sharing: Save your mixes with a product name and share them as professional image cards with your team.

WHO USES PEST CALCULATOR?
Professional Pest Control Operators, Turf Managers, Landscape Technicians, and Agricultural Applicators. Whether you’re using a 1-gallon hand pump or a 100-gallon truck sprayer, this app ensures your dilution matches the label every time.

IMPORTANT:
This app is a calculator only. It does not recommend rates, validate labels, or provide pesticide advice. Always read and follow the specific product label for the chemical you are applying.