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Use our hair color mixing calculator to work out shade amounts, developer ratios, and total mix size with simple steps.
Mixing hair color can be tricky. You need the right amount of each shade and the right amount of developer. Our hair color mixing calculator makes these steps easier. Enter your amounts, choose a ratio, and get your mix in seconds. You can also work out the amounts for a target mix.
A hair color mixing calculator helps you work out how much color and developer to mix. It can also help you plan a blend of two hair color shades.
Our hair color mix calculator has three modes. You can enter one color amount, enter two shade amounts, or set a target mixture amount. Then, choose the developer ratio.
This tool works as a hair color formula calculator and a hair color formulation calculator. It gives you clear amounts for your mix. It does not predict the final hair color.
Follow these five steps to work out your mix.
Choose a mode: Select one color, two shades, or a target mix.
Enter your color amount: For one shade, enter its amount. For two shades, enter both amounts.
Choose a ratio: Pick 1:1, 1:1.5, or 1:2. You can also enter a custom ratio.
Enter the target amount if needed: In target mode, enter the total mix you want to make.
Calculate your result: Check the color amount, developer amount, total mix, and shade shares.
The calculator lets you choose grams or milliliters. It uses the same unit for all amounts in a calculation. It does not convert grams to milliliters.
A hair color mixing ratio tells you how much developer to add to your color. The first number stands for the color amount. The second number stands for the developer amount.
A 1:1 ratio means equal parts color and developer. For example, mix 60 ml of color with 60 ml of developer. The total mix is 120 ml.
A 1:1.5 ratio means one part color and 1.5 parts developer. For 60 ml of color, you need 90 ml of developer. The total mix is 150 ml.
A 1 to 1.5 ratio hair color calculator can help you work out these amounts with ease.
A 1:2 ratio means one part color and two parts developer. For 60 ml of color, you need 120 ml of developer. The total mix is 180 ml.
These are common ratio examples, not rules for every dye. Each brand and product may have its own mixing ratio. Always read the product guide before you mix.
You can use simple math to work out your hair color mix.
Developer Amount = Hair Color Amount × Developer Ratio
This gives you the amount of developer to add. For example, 60 ml of color at a 1:1.5 ratio needs 90 ml of developer.
Total Mixture = Hair Color Amount + Developer Amount
This gives you the full amount after mixing. In this example, the total is 150 ml.
When you mix two shades, use these formulas:
Total Hair Color = First Shade Amount + Second Shade Amount
First Shade Share = First Shade Amount ÷ Total Hair Color × 100
Second Shade Share = Second Shade Amount ÷ Total Hair Color × 100
The two shade shares add up to 100%. These values show how much each shade adds to the color mix.
Say you want to mix 30 ml of one shade with 30 ml of another shade.
First, add both shades:
Total Hair Color = 30 + 30 = 60 ml
Now, use a 1:1.5 developer ratio:
Developer Amount = 60 × 1.5 = 90 ml
Then, add the color and developer:
Total Mixture = 60 + 90 = 150 ml
Your mix has 60 ml of hair color and 90 ml of developer. Each shade makes up half of the color amount.
This is only a math example. Check your own product guide for the right ratio.
Always check the brand's mixing guide first. Don't assume that all hair dyes use the same ratio. Some products need a different amount of developer.
Use a proper scale or measuring tool. Small errors can change your mix. Keep the same unit for all amounts.
Check that both shades can work together. Follow the product's rules for shade blends. Also, follow all safety steps on the pack. Use the right developer volume for your product.
Remember, the mix alone can't tell you the final hair color. Your base shade, hair tone, hair health, and product all play a part.
Our hair color mixing calculator helps you work out shade amounts, developer needs, and total mix size. Use it to plan one shade, blend two shades, or make a set amount of mix. For the best result, always follow your hair color brand's guide.
Multiply the color amount by the second number in the ratio. For a 1:1.5 ratio, 60 ml of color needs 90 ml of developer.
Measure each shade, then add the amounts. Mix them only if the product guides allow it. Add developer based on the total color amount and the stated ratio.
Developer Amount = Hair Color Amount × Developer Ratio. Add the color and developer amounts to get the total mix.
It depends on the product ratio. At 1:1, use 4 oz of developer. At 1:1.5, use 6 oz. At 1:2, use 8 oz.
It means equal parts hair color and developer. For example, 2 oz of color needs 2 oz of developer.
A 1:1.5 ratio uses 1.5 parts developer per part of color. A 1:2 ratio uses two parts developer. So, 1:2 needs more developer.
Some shades can be mixed, but not all products are made for this. Check the brand's guide before blending two shades.
Yes. The ratio can vary by brand and product type. Always use the ratio listed in the product guide.