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pH Calculator

⚗️pH Calculator

H⁺ concentration (mol/L)

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Qué es pH Calculator?

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pH is a logarithmic scale measuring the acidity or alkalinity of a solution, ranging from 0 (highly acidic) to 14 (highly alkaline), with 7 being neutral (pure water at 25°C). Each unit represents a 10× change in hydrogen ion concentration.

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Fórmula

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f(x)pH = −log₁₀[H⁺] where [H⁺] is the hydrogen ion concentration in mol/L

Leyenda de variables

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Símbolo	Nombre	Unidad	Descripción
H	10^(−pH)	—	10^(−pH)
L	L value	—	Variable used in the calculation

Cómo pH Calculator

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1pH = −log₁₀[H⁺] where [H⁺] is the hydrogen ion concentration in mol/L
2[H⁺] = 10^(−pH)
3pOH = 14 − pH (at 25°C)
4Acidic: pH < 7 | Neutral: pH = 7 | Alkaline (basic): pH > 7

Ejemplos resueltos

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Ejemplo 1

Dado:[H⁺] = 0.001 mol/L

Resultado:pH = 3

−log₁₀(10⁻³) = 3. Acidic (vinegar level)

Ejemplo 2

Dado:pH = 11

Resultado:[H⁺] = 10⁻¹¹ mol/L

Strongly alkaline — bleach, ammonia

Aplicaciones prácticas

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Academic homework and exam preparation

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Engineering and architecture calculations

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Everyday measurement tasks around the home

Common pH Values

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Substance	pH	Category
Battery acid	0	Extremely acidic
Gastric acid (stomach)	1–2	Very acidic
Vinegar / lemon juice	2–3	Acidic
Coffee	5	Mildly acidic
Pure water	7	Neutral
Baking soda	9	Mildly alkaline
Bleach	12	Strongly alkaline

Preguntas frecuentes

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What is Ph?

How accurate is the Ph calculator?

The calculator uses the standard published formula for ph. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Ph calculator use?

This calculator works with inches, Celsius. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Ph calculator use?

The core formula is: pH = −log₁₀[H⁺] where [H⁺] is the hydrogen ion concentration in mol/L. Each step in the calculation is shown so you can verify the result manually.

Referencias

Solo con fines informativos. Esta herramienta no sustituye el consejo médico profesional, el diagnóstico ni el tratamiento. Consulte siempre a un profesional de salud cualificado.

Comparar con

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pH vs pOH

Mathematically verified

Reviewed October 2026

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