{
    "name": "Pesticide Dilution Calculator",
    "url": "https://calculators.geekmidst.com/calculators/pesticide-dilution-calculator",
    "markdown": "https://calculators.geekmidst.com/calculators/pesticide-dilution-calculator.md",
    "category": "Agriculture",
    "description": "Work out how much pesticide to add to a knapsack or tank from the label dose per litre, or from the active-ingredient strength you want (C1V1 = C2V2).",
    "summary": "Multiply the label dose per litre by the spray volume, or dilute a concentrate to a target strength with C₁V₁ = C₂V₂. Always follow the product label.",
    "also_called": [
        "Spray dilution calculator",
        "Pesticide mixing calculator"
    ],
    "applies_to": "Worldwide",
    "last_updated": "2026-10-29",
    "computation": "Results are computed in the visitor’s browser on the HTML page. This API describes the calculator; it does not compute results.",
    "inputs": [
        {
            "name": "mode",
            "label": "Dose from",
            "type": "segmented",
            "default": "dose",
            "options": {
                "dose": "Label dose per litre",
                "ai": "Active-ingredient strength"
            }
        },
        {
            "name": "dose",
            "label": "Label dose",
            "type": "number",
            "default": "2",
            "unit": "ml or g per litre",
            "shown_when": {
                "mode": "dose"
            }
        },
        {
            "name": "product_ai",
            "label": "Active ingredient in the product",
            "type": "number",
            "default": "25",
            "unit": "%",
            "shown_when": {
                "mode": "ai"
            }
        },
        {
            "name": "target_ai",
            "label": "Spray strength wanted",
            "type": "number",
            "default": "0.05",
            "unit": "% a.i.",
            "shown_when": {
                "mode": "ai"
            }
        },
        {
            "name": "spray_volume",
            "label": "Spray volume per tank",
            "type": "number",
            "default": "15",
            "unit": "L"
        },
        {
            "name": "tanks",
            "label": "Number of tank loads",
            "type": "number",
            "default": "4"
        }
    ],
    "outputs": [
        {
            "key": "product_per_tank",
            "label": "Product per tank",
            "format": "number"
        },
        {
            "key": "water_per_tank",
            "label": "Water per tank (liquid product)",
            "format": "number"
        },
        {
            "key": "total_product",
            "label": "Product for all tanks",
            "format": "number"
        },
        {
            "key": "total_spray",
            "label": "Total spray volume",
            "format": "number"
        }
    ],
    "formula": {
        "text": "Label dose: Product = Dose per litre × Volume.  Strength: Product (ml) = Volume (L) × 1000 × C₂ ÷ C₁;  Water ≈ Volume − Product",
        "variables": {
            "C₁": "active-ingredient % of the product",
            "C₂": "active-ingredient % wanted in the spray",
            "Volume": "spray volume per tank in litres"
        }
    },
    "worked_example": {
        "inputs": {
            "mode": "dose",
            "dose": "2",
            "product_ai": "25",
            "target_ai": "0.05",
            "spray_volume": "15",
            "tanks": "4"
        },
        "steps": [
            "Product per tank = 2 ml/L × 15 L = 30 ml.",
            "Water = 15 L − 0.03 L = 14.97 L; for 4 tanks you need 120 ml of product."
        ],
        "result": "At 2 ml per litre, add 30 ml of product to each 15 L knapsack, 120 ml for four loads."
    },
    "interpretation": "Measure the product with a graduated cylinder or syringe, part-fill the tank with water first, add the product, then top up to volume.",
    "assumptions": [
        "The product is measured in ml (liquids) or g (powders) per litre, as on the label.",
        "Liquid product volume adds to the water volume."
    ],
    "limitations": [
        "Does not check label limits, re-entry or pre-harvest intervals. The label is the legal instruction for use.",
        "For a dose per hectare, use the sprayer tank mix calculator."
    ],
    "rules": null,
    "faqs": [
        {
            "question": "What does 25 EC mean?",
            "answer": "An emulsifiable concentrate with 25% active ingredient (often w/v). Use 25 as the product strength."
        },
        {
            "question": "Can I make the spray stronger for better control?",
            "answer": "No. Higher than label rates can harm crops, leave illegal residues and speed up resistance."
        }
    ],
    "sources": [],
    "related": [
        {
            "name": "Sprayer Tank Mix Calculator",
            "url": "https://calculators.geekmidst.com/calculators/sprayer-tank-mix-calculator"
        },
        {
            "name": "Ratio Calculator",
            "url": "https://calculators.geekmidst.com/calculators/ratio-calculator"
        },
        {
            "name": "Percentage Calculator",
            "url": "https://calculators.geekmidst.com/calculators/percentage-calculator"
        }
    ],
    "disclaimer": null,
    "publisher": "GM¹X CalcVerse"
}