Spray Tank Mix Calculator

How to Use the Spray Tank Mix Calculator

Step 1: Select the Sprayer Type

Choose the sprayer you are using, such as an HTP sprayer, battery sprayer, power sprayer or manual/knapsack sprayer.

Step 2: Enter the Tank Capacity

Add the total capacity of the sprayer tank in litres.

Step 3: Check the Chemical Label

Find the recommended chemical quantity and corresponding water quantity printed on the product label.

Step 4: Enter the Label Values

Enter both values into the relevant fields without changing the recommended ratio.

Step 5: Calculate the Quantity

Select Calculate Spray Tank Mix to see the dose per litre and the total chemical quantity required for one full tank.

Example Spray Tank Calculation

Suppose a chemical label recommends:

• 20 ml of chemical
• For 10 litres of water
• Sprayer tank capacity: 16 litres

The dose rate is:

• 2 ml per litre of water
• For a 16-litre tank, the required chemical quantity is: 32 ml

How the Spray Tank Mix Calculator Helps Farmers

Reduces Manual Calculation

Calculating chemical quantities manually can become difficult when the label dose and sprayer tank capacity are different. This calculator converts the label dosage into the quantity required for the selected tank size.

Helps Prepare a Consistent Spray Mixture

Using the calculated quantity for each tank helps maintain a consistent chemical-to-water ratio across multiple refills. This can make the spraying process easier to manage across the field.p>

Helps Avoid Mixing Errors

Entering the label dose and tank capacity provides a clear estimate before filling the sprayer. This can help reduce mistakes caused by incorrect multiplication or conversion.

Works with Different Sprayer Capacities

The calculator can be used for battery sprayers, knapsack sprayers, HTP sprayers and power sprayers. Users can edit the tank capacity according to the equipment they are using.

Useful for Different Agricultural Chemicals

Farmers can use the tool to calculate mixing quantities for pesticides, insecticides, herbicides, fungicides and other liquid agricultural chemicals, provided the product label gives a clear chemical-to-water ratio.

Calculate Before You Fill the Tank

Enter the dosage printed on your chemical label and your sprayer tank capacity to calculate the required mixing quantity in seconds.

Frequently Asked Questions

How do you calculate pesticide quantity for a sprayer tank?

Check the pesticide label for the recommended chemical quantity and water quantity. Divide the chemical quantity by the water quantity to find the dose per litre, then multiply that dose by your sprayer tank capacity.
For example, if the label recommends 20 ml in 10 litres of water, the dose is 2 ml per litre. A 16-litre tank would therefore require 32 ml of chemical.

How much pesticide is needed for a 16-litre sprayer?

The quantity depends on the dosage printed on the pesticide label. For example, if the recommended dose is 2 ml per litre of water, a 16-litre sprayer will require 32 ml of pesticide.
Always calculate using the exact instructions provided for that particular product.

How do I calculate pesticide dosage per litre of water?

Divide the chemical quantity shown on the label by the recommended water quantity.
For example, if the label recommends 30 ml of chemical in 15 litres of water, the dosage is 2 ml per litre.

How do you mix pesticide in a spray tank?

First, read the pesticide label and calculate the chemical quantity required for your tank size. Partially fill the tank with clean water, add the measured chemical according to the manufacturer’s instructions, mix properly and then add the remaining water.
Always wear the recommended protective equipment and follow the product label.

Can the same pesticide dose be used for every crop?

No. Pesticide dosage can vary according to the crop, pest, disease, product concentration and application method. Always follow the dose and crop instructions printed on the chemical label or provided by a qualified agricultural professional.

What happens if too much pesticide is added to a spray tank?

Using more pesticide than recommended may damage crops, leave excessive residue, increase costs and create health or environmental risks. Never increase the dose unless the product label or a qualified agricultural expert specifically recommends it.

What happens if too little pesticide is used?

Using less than the recommended dose may reduce the effectiveness of the spray. It may result in poor control of pests, weeds or diseases and could require another application.

Does sprayer tank capacity change the pesticide dose per litre?

No. The recommended dose per litre remains the same. Only the total chemical quantity changes according to the size of the sprayer tank.
For example, at 2 ml per litre, a 10-litre tank requires 20 ml, while a 16-litre tank requires 32 ml.