Calculators

Physiology Calculators

• Nernst Potential Calculator
• Goldman-Hodgkin-Katz Equation Calculator
• Electrochemical Driving Force Calculator
• Temperature Coefficient (Q₁₀) Calculator
• Time Required for Diffusion over a Given Distance

• Cardiac Output Calculator
• Maximum Heart Rate Calculator
• Mean Arterial Pressure Calculator
• Minute Volume Calculator
• Alveolar Minute Volume Calculator
• Body Mass Index Calculator

Biochemistry Calculators

• Michaelis-Menten Equation - Interactive Graph
• Hill Equation - Interactive Graph

Calculators Related to Units, Numbers, and Significant Figures

• Unit Conversion Calculator
• Convert Numbers between Decimal, Scientific, and Exponential Notation
• Get and Set the Number of Significant Figures
• Significant Figures Calculator

• Random Number Generator
• Random Password Generator

Calculators Related to Money, Investments, and Financial Literacy

• Investment Growth (partner site)
• Projected Investment Growth (partner site)
• Google Adsense Revenue Calculator

Date Calculators

• Date Calculator/Generator - Holidays, Observances, Celebrations, Historical, National, International, and Other Key Dates
• Custom Date Calculator/Generator

Calculators for Preparing Physiological and Biochemical Solutions

Sooner or later, a student or teacher of physiology is faced with the task of preparing solutions for teaching and/or research. The calculators below simplify and facilitate this task. These calculators are not useful just for physiology students and practitioners. They are also useful for preparing solutions in other fields such as neuroscience, chemistry, biochemistry, molecular biology, cell biology, microbiology, and many others.

Starting with the solid material

• Molar Solution Concentration Calculator (Molarity)
• Percent Solution Concentration Calculator (w/v %, w/w %, and w/v %) (note)
• Normal Solution Concentration Calculator (Normality)
• Molal Solution Concentration Calculator (Molality)
• Mass per Volume Solution Concentration Calculator (e.g., pg/mL, μg/μL, mg/mL, g/L, etc.)
• Units per Volume Solution Concentration Calculator (e.g., Units/mL)
• Parts per Trillion (ppt), Parts per Billion (ppb), Parts per Million (ppm), Parts per Thousand (ppth), Parts per Hundred (pph, %) Concentration Calculator - Mass/Mass Fraction
• Parts per Trillion (ppt), Parts per Billion (ppb), Parts per Million (ppm), Parts per Thousand (ppth), Parts per Hundred (pph, %) Concentration Calculator - Mass/Volume Fraction
• Parts per Trillion (ppt), Parts per Billion (ppb), Parts per Million (ppm), Parts per Thousand (ppth), Parts per Hundred (pph, %) Concentration Calculator - Volume/Mass Fraction
• Parts per Trillion (ppt), Parts per Billion (ppb), Parts per Million (ppm), Parts per Thousand (ppth), Parts per Hundred (pph, %) Concentration Calculator - Volume/Volume Fraction

Dilution calculators for solutions

• Dilution Calculator - Molarity, Percent (%)
• Dilution Calculator - Normality
• Dilution Calculator - Molality
• Dilution Calculator - Parts per Billion (ppb), Parts per Million (ppm), Parts per Thousand (ppt), Parts per Hundred (pph, %)
• Dilution Calculator - Mass per Volume (e.g., pg/mL, μg/μL, mg/mL, g/L, etc.)
• Dilution Calculator - Units per Volume (e.g., Units/mL)
• Dilution Calculator - Cells per Volume (e.g., 10⁶ cells/mL)

Dilution factor calculators for solutions (fold dilution calculators)

• Dilution Factor Calculator - No Unit
• Dilution Factor Calculator - Molarity, Percent (%)
• Dilution Factor Calculator - Normality
• Dilution Factor Calculator - Molality
• Dilution Factor Calculator - Parts per Billion (ppb), Parts per Million (ppm), Parts per Thousand (ppt), Parts per Hundred (pph, %)
• Dilution Factor Calculator - Mass per Volume (e.g., pg/mL, μg/μL, mg/mL, g/L, etc.)
• Dilution Factor Calculator - Units per Volume (e.g., Units/mL, etc.)
• Dilution Factor Calculator - Cells per Volume (e.g., 10⁶ cells/mL, etc.)

Solution mixtures calculators (for mixing two solutions)

• Solution Mixtures Calculator - Molarity, Percent (%)
• Solution Mixtures Calculator - Normality
• Solution Mixtures Calculator - Molality
• Solution Mixtures Calculator - Parts per Billion (ppb), Parts per Million (ppm), Parts per Thousand (ppt), Parts per Hundred (pph, %)
• Solution Mixtures Calculator - Mass per Volume (e.g., pg/mL, μg/μL, mg/mL, g/L, etc.)
• Solution Mixtures Calculator - Units per Volume (e.g., Units/mL, etc.)
• Solution Mixtures Calculator - Cells per Volume (e.g., 10⁶ cells/mL)