Just out of curiosity I asked AI how many radiocarbon tests has been done world wide.
Here's the response:
There isn't an official worldwide count, but we can make a reasonable estimate.
Radiocarbon dating has been in routine use since the late 1940s, and today there are well over 100 active laboratories worldwide. One university source notes that
tens of thousands of radiocarbon measurements are commissioned every year.
A rough estimate looks like this:
- 1950s–1960s: perhaps 5,000–20,000 measurements per year.
- 1970s–1980s: roughly 20,000–50,000 per year as more labs opened.
- 1990s–today: about 50,000–100,000+ per year, especially after accelerator mass spectrometry (AMS) made dating faster and required much smaller samples.
Adding those decades together suggests:
- Conservative estimate: ~2 million radiocarbon measurements worldwide.
- Likely estimate: 3–5 million measurements.
- Upper-end estimate: perhaps 6–8 million, depending on how many unpublished commercial, environmental, forensic, and industrial measurements are included.
For perspective, the largest global archaeological compilation currently contains about
180,000 archaeological radiocarbon dates, and its creators describe it as the largest standardized archaeological database—not all radiocarbon dates ever measured. That means archaeological databases represent only a fraction of the total number of measurements, since many dates come from geology, oceanography, climate research, ecology, forensics, and commercial contract work, and many are never included in public databases.
So if you asked me for a single best guess, I'd say:
Around 3–5 million radiocarbon tests have probably been performed worldwide since the method was invented in 1949.
It's an estimate rather than a documented total, because no organization has kept a cumulative global count across all laboratories and disciplines.