🧪 pH Converter
Convert between pH, pOH, and ion concentrations
0 (Acidic)7 (Neutral)14 (Basic)
This solution is
Neutral
Similar to: Pure Water
pH
7.00
pOH
7.00
[H⁺] mol/L
1.00 × 10^-7
[OH⁻] mol/L
1.00 × 10^-7
Compared to neutral water (pH 7)
Perfectly neutral
📊 Common Substances pH Scale
0
Battery Acid
pH 0
1.5
Gastric Acid
pH 1.5
2.4
Lemon Juice
pH 2.4
2.9
Vinegar
pH 2.9
3.5
Orange Juice
pH 3.5
4.1
Tomato Juice
pH 4.1
5
Black Coffee
pH 5
6.5
Milk
pH 6.5
7
Pure Water
pH 7
7.4
Human Blood
pH 7.4
8.1
Sea Water
pH 8.1
8.3
Baking Soda
pH 8.3
10.5
Milk of Magnesia
pH 10.5
11
Ammonia
pH 11
12.5
Bleach
pH 12.5
14
Drain Cleaner
pH 14
📐 Key Formulas
pH from [H⁺]
pH = -log₁₀[H⁺]
[H⁺] from pH
[H⁺] = 10^(-pH)
pH + pOH Relationship
pH + pOH = 14 (at 25°C)
Water Ion Product
[H⁺] × [OH⁻] = 10⁻¹⁴