// multi-utility computation suite · offline · instant · precise
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sci.radiocarbon-dating Calculator
Calculates radiocarbon age from ¹⁴C/¹²C ratio relative to modern standard. Radiocarbon dating is accurate to ±20–40 years for recent samples, with calibration curves correcting for past atmospheric ¹⁴C variations — the method is valid from ~300 to ~50,000 years BP.
Inputs
Fraction Modern C14
Reference formula or conversion factor shown for context.
Measurement Uncertainty Pct
Reference formula or conversion factor shown for context.
Results
radiocarbon age (BP)
Sample size or count used in the calculation.
age uncertainty (±years)
Sample size or count used in the calculation.
calendar age (est. cal BP)
Sample size or count used in the calculation.
Fm = 0.5 → ¹⁴C half-life elapsed
Time for half the radioactive material to decay. After 10 half-lives, less than 0.1% of the original material remains.
t = -t½/ln2 × ln(Fm)
Sample size or count used in the calculation.
useful range
The difference between the maximum and minimum values.