Calculate precise mixing rates for fertilizers, pesticides, and sprays - Free & Easy to Use
Choose Your CalculatorEliminate guesswork and prevent over-application. Our calculators ensure you use the exact amount needed, saving money on products.
Get instant conversions in gallons, quarts, cups, ounces, milliliters, and more. No manual math required.
Whether you're treating a small garden or large acreage, our calculators work for any size application.
Choose the calculator that matches your application needs
Calculate precise pesticide mixing rates for safe and effective pest control. Get accurate measurements for any treatment area.
Calculate NowGet exact fertilizer amounts for any lawn or garden size. Prevent burning and waste with precise application rates.
Calculate NowPerfect concentrations for leaf feeding applications. Calculate mixing rates for nutrients and foliar treatments.
Calculate NowTank mixing rates for 1-5 gallon backpack sprayers. Perfect for spot treatments and small-scale applications.
Calculate NowAccurate weed control application rates. Calculate precise herbicide amounts for effective weed management.
Calculate NowSeasonal feeding rates for perfect lawns. Get exact amounts for liquid and granular lawn fertilizers.
Calculate NowCalculate spray rate and coverage for any sprayer. Determine gallons per acre and application volume.
Calculate NowPrecise insecticide mixing rates for effective pest control. Calculate exact amounts for gardens and crops.
Calculate NowExact fungicide mixing rates for plant disease control. Prevent and treat fungal infections effectively.
Calculate NowMaster the science and techniques behind accurate spray applications
Master NPK ratios, conversion formulas, and application rates
Whether you're a professional agronomist or a home gardener, this comprehensive guide teaches you everything about fertilizer calculations. Learn to convert between different units, understand nutrient content, and apply the right amounts for optimal plant growth.
Read GuidePrevent compatibility issues and ensure safe, effective spray mixes
Tank mixing errors cost thousands in wasted product and crop damage annually. This essential guide teaches the industry-standard W-A-L-E-S method, helping you avoid precipitation, clogging, and reduced efficacy. Includes crop-specific mix recommendations and safety protocols.
Read GuideThese comprehensive guides complement our calculators, giving you the knowledge to make informed decisions about spray applications. Understanding the principles behind the calculations helps you achieve better results and avoid costly mistakes.
Precision in agricultural applications is critical for success, safety, and environmental responsibility. Whether you're a professional landscaper, farmer, or homeowner maintaining your lawn, accurate chemical mixing ensures optimal results while minimizing waste and potential harm.
Our professional-grade calculators eliminate guesswork by converting product label rates into exact measurements for your specific area size. This precision prevents over-application that can damage plants, waste money, and harm the environment. It also ensures under-application doesn't leave you with ineffective pest control or nutrient deficiencies.
The environmental benefits are substantial. By applying exactly what's needed, you reduce chemical runoff into waterways, minimize impact on beneficial insects and wildlife, and contribute to sustainable agricultural practices. Cost savings add up quickly—over-mixing even by small amounts can waste hundreds of dollars annually.
Safety is paramount when handling concentrated pesticides, herbicides, and fertilizers. Our calculators help you mix the right amounts, reducing exposure to chemicals and ensuring applications are within safe, legal limits. Each calculator provides instant conversions across multiple units, so whether your sprayer measures in gallons or your product label lists rates in ounces per acre, you'll get accurate results every time.
From small backyard gardens to large agricultural operations, our free calculators provide the professional-grade accuracy you need for successful, safe, and cost-effective spray applications.
Get accurate results in 3 simple steps
Choose the type of application you're planning—fertilizer, pesticide, herbicide, or foliar spray.
Input your area size and the product label application rate. Our calculator does the rest automatically.
Receive precise amounts in multiple measurement units—gallons, quarts, cups, ounces, and more.
Maintaining lawns and gardens with professional-grade accuracy
Professional landscaping services requiring precise applications
Agricultural producers managing large-scale crop applications
Operators requiring exact pesticide and insecticide mixing
Greenhouse managers caring for plants and seedlings
Superintendents maintaining pristine turf conditions
Departments managing public green spaces
Fruit growers applying foliar and pest treatments
Always prioritize safety when handling chemicals
Always read and follow all product label instructions. Labels are legal documents with critical safety information.
Use appropriate PPE including gloves, eye protection, long sleeves, and respirators when required.
Mix chemicals in well-ventilated areas and always add product to water, not water to product.
Apply during low wind conditions and appropriate temperatures. Avoid spraying before rain.
Document all applications including dates, products used, rates, and areas treated.
Dispose of containers and leftover chemicals according to local regulations and label instructions.
Join thousands of professionals and homeowners who trust SprayCalc Pro for accurate mixing rates
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