Hair Color & Bleach Developer Ratio Calculator
Mix the perfect bowl every time. Enter your product, mixing ratio and amount of color or bleach to get the exact developer to add — for color, lightener and toner.
1:1.5 = 1 part color, 1.5 parts developer.
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How to use the calculator
Pick your product (color, bleach or toner), choose your mixing ratio and enter the amount of color or powder — or the total bowl weight you want. The calculator instantly shows the exact developer to add and the total bowl weight, with no submit button.
Common mixing ratios by product
Permanent color: 1:1 to 1:1.5 developer.
Demi-permanent color: 1:2 developer.
Toner: 1:2 developer.
Bleach / lightener: 1:1.5 to 1:2 developer.
These are typical starting points — always follow the exact ratio printed on your product.
Frequently asked questions
What is the developer-to-color mixing ratio?
Most permanent colors mix at 1:1.5, demi-permanent and toner are often 1:2, and bleach is usually 1:1.5 to 1:2. Always check the instructions for your specific brand, as ratios can vary.
How much developer do I mix with 60 g of color?
At a 1:1.5 ratio, 60 g of color needs 90 g of developer for a 150 g total bowl. Use the calculator above for any amount, ratio or unit.
Can I use this for bleach too?
Yes — choose “Bleach / lightener”, set the ratio (often 1:2) and enter the grams of powder. The calculator returns the exact developer and total bowl weight.