Hair Color Mixing Calculator
Two-Shade Mix
Calculate the resulting level when mixing two hair color shades
Developer Mix Ratio
Calculate the amount of developer needed for your hair color
ml
Formula
Resulting Level = (Level₁ × Parts₁ + Level₂ × Parts₂) / (Parts₁ + Parts₂) | Developer Amount = Color Amount × Mix Ratio
Frequently Asked Questions
How do you calculate mixed hair color levels?
To find the resulting level when mixing two shades, multiply each level by its proportion, then add. For example: equal parts Level 6 and Level 8 = (6+8)/2 = Level 7. For unequal parts, weight accordingly.
What developer volume should I use?
10 Vol (3%): deposit only, darken or tone. 20 Vol (6%): standard, 1-2 levels lift. 30 Vol (9%): 2-3 levels lift. 40 Vol (12%): 3-4 levels lift, for resistant hair. Higher volumes cause more damage.
What is the standard hair color to developer ratio?
Permanent color: 1:1. High-lift tints: 1:1.5. Demi-permanent/toners: 1:2. Lighteners/bleach: 1:2 or 1:3. Always follow the specific product instructions.
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