Carbon-14 Dating Calculator
Estimate the age of organic material from the percentage of carbon-14 remaining.
How to use the Carbon-14 Dating Calculator
- Fill in what you know of: C-14 remaining, Or age — leave the unknown empty.
- The results (Age, C-14 remaining, Half-lives elapsed) are calculated instantly as you type.
- Use “Copy link” to share the calculation with the same input values.
Formula
- t = t½ · log₂(N₀/N), t½ = 5730 years
About this tool
Uncalibrated radiocarbon age; practical limit is about 50 000 years.