Hair Dye Ratio Calculator
Calculate the perfect mixing ratio for consistent hair color results.
Mixing Parameters
Quick Examples
Mixing Results
Enter dye amount and ratio to see mixing calculations
Hair Dye Ratio Calculator
Mixing hair dye correctly matters more than most people think. Too much developer can weaken your hair and cause unexpected color results. Too little developer can lead to uneven coloring or poor gray coverage. The **Hair Dye Ratio Calculator** removes the guesswork and helps you mix the right amount every time.
This tool works for home users and professional hairstylists, whether you're touching up roots, coloring a full head, or doing highlights. It supports all dye types from permanent color to bleach, with built-in safety checks and mixing recommendations.
How the Calculator Works
Mixing Ratio Formula
The calculator uses the basic ratio formula to determine developer needs:
Developer = Dye × (Developer Ratio ÷ Dye Ratio)
Example: For a 1:1.5 ratio with 60ml dye:
- Dye amount = 60ml
- Ratio = 1:1.5 (dye:developer)
- Developer = 60 × (1.5 ÷ 1) = 90ml
- Total mixture = 60 + 90 = 150ml
The calculator automatically adjusts ratios based on dye type, hair length, and coverage goals.
Example Mixing Calculations
| Application | Dye Amount | Ratio | Developer | Total Mix |
|---|---|---|---|---|
| Full Head Color | 60 ml | 1:1.5 | 90 ml | 150 ml |
| Root Touch-up | 30 ml | 1:1 | 30 ml | 60 ml |
| Highlights | 45 ml | 1:2 | 90 ml | 135 ml |
| Bleach Treatment | 50 g | 1:1.5 | 75 g | 125 g |
| Gray Coverage | 80 ml | 1:1 | 80 ml | 160 ml |
These examples show typical ratios for different coloring applications. Always follow the manufacturer's instructions and perform a patch test before full application.
Important Safety Information
⚠️ Developer Strength Warnings
- 10 Volume: Gentle processing, minimal lift (1-2 levels)
- 20 Volume: Standard processing, moderate lift (2-3 levels)
- 30 Volume: Strong processing, significant lift (3-4 levels)
- 40 Volume: Maximum lift, can damage hair if misused (4+ levels)
🧴 General Safety Tips
- Always perform a patch test 48 hours before coloring
- Never mix different developer strengths
- Use gloves and work in a well-ventilated area
- Follow processing times exactly as recommended
- Rinse thoroughly and use appropriate after-care products