How To Calculate Half Life Of Carbon 14

Introduction & Importance

Carbon 14 (C14) dating is a crucial tool in archaeology and geology. Understanding its half-life is essential for accurate dating.

How to Use This Calculator

1. Enter the decay constant (λ) and time (t).
2. Click ‘Calculate’.
3. View results and chart.

Formula & Methodology

The half-life (t_1/2) of carbon 14 can be calculated using the formula:

t_1/2 = ln(2) / λ

Real-World Examples

Data & Statistics

Decay Constants for Various Isotopes

Isotope	Decay Constant (λ)
C14	1.209 x 10^-4

Expert Tips

• Always use the most recent decay constants for accurate dating.
• Consider other factors like sample size and contamination.

Interactive FAQ

What is the half-life of carbon 14?

The half-life of carbon 14 is approximately 5,700 years.

For more information, see IAEA’s Carbon-14 Standards and SLU’s Carbon-14 Dating.