Pesticide Mix Calculator

Pest Calculator is the go-to app for pest control technicians, turf managers, lawn care pros, and agricultural applicators who need instant, accurate spray mix rates on the job. Enter your label rate and tank size — get the exact amount to mix in seconds. Works offline. No account required.

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:
Works Offline: Calculations run fully on-device — 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.
Metric & Imperial: Full support for Liters, Milliliters, Hectares, and all standard US units.
Dark & Light Modes: High-contrast dark theme for dim crawlspaces, light mode when you need it.
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.