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pH Calculator

⚗️pH Calculator

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We're working on a comprehensive educational guide for the pH Calculator in your language. The content below is shown in English.

What is 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.

PrimeCalcPro provides professional-grade tools trusted by businesses and academics.

נוסחה

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

Variable Legend

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סמלשםיחידהתיאור
H10^(−pH)—10^(−pH)
LL value—Variable used in the calculation

How to pH Calculator

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

Worked Examples

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Example 1
Given:[H⁺] = 0.001 mol/L
תוצאה:pH = 3

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

Example 2
Given:pH = 11
תוצאה:[H⁺] = 10⁻¹¹ mol/L

Strongly alkaline — bleach, ammonia

Real-World Applications

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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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SubstancepHCategory
Battery acid0Extremely acidic
Gastric acid (stomach)1–2Very acidic
Vinegar / lemon juice2–3Acidic
Coffee5Mildly acidic
Pure water7Neutral
Baking soda9Mildly alkaline
Bleach12Strongly alkaline

Frequently Asked Questions

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Q

What is Ph?

A

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

Q

How accurate is the Ph calculator?

A

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.

Q

What units does the Ph calculator use?

A

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

Q

What formula does the Ph calculator use?

A

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.

למטרות מידע בלבד. כלי זה אינו תחליף לייעוץ רפואי מקצועי, אבחון או טיפול. התייעצו תמיד עם איש מקצוע רפואי מוסמך.
השווה עם
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pH vs pOH

Mathematically verified
Reviewed October 2026
Our methodology

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