Step-by-step instructions
Choose a mixing mode, enter the correct units, scale batches, and save or print recipes.
How do you scale a product-label mixing rate?
Our dilution and mixing calculator helps you convert a known rate or recipe into quantities for your chosen batch size. We have included modes for product-label rates, parts ratios, percentages by volume, stock-to-final concentrations, and scaling an existing recipe, with metric and US liquid units.
How do you choose the right calculation mode?
- Choose the mode that matches the label or procedure. Product-label rate is for instructions such as a product amount per gallon of water. Parts ratio uses separate parts of product and diluent.
- Enter the given amounts and their units, then the desired batch size and number of identical containers. Follow whether the selected mode asks for carrier volume or final mixture volume.
- Read the total and per-container results. Add product package size and price if you want an estimated product cost.
What is the difference between water volume and final volume?
In Product-label rate mode, product required = desired carrier volume × (label product amount ÷ label carrier volume), with units converted consistently. Product is added to that carrier volume, so the resulting mixture is larger. In a product-to-diluent parts ratio, 1 part product plus 10 parts diluent makes 11 total parts. Percentage-by-volume and stock-dilution calculations instead use the selected final-volume basis.
Worked example: two batches at a stated label rate
For a generic arithmetic example, choose Product-label rate and enter 1 US fl oz of product per 1 US gal of water. Set desired carrier volume to 1 US gal and the number of identical containers to 2. This represents two batches, each using one gallon of water.
Each batch requires 1 US fl oz of product plus 1 US gal of water. Together, the batches require 2 US fl oz of product, approximately 59.15 mL, and 2 US gal of water. The calculated combined volume is 258 US fl oz, approximately 7.63 liters. This example is not a recommended product concentration.
What assumptions should you check?
These are liquid-volume calculations. Keep concentration units compatible, and do not treat fluid ounces as ounces by weight. Follow the actual product label and preparation procedure for suitability, concentration, and contact time. The calculator assumes volumes add for its mixture totals and is not intended for medication dosing.