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Exposure Calculator
Estimate your personal microplastic exposure across food, water, air, and lifestyle.
A few facts to set the scale. Body size changes the dose per kilogram, so the same exposure lands differently on different people.
Common questions
Is the microplastic exposure calculator free?
Yes. It is free to use and no account is needed to see your result. Signing up is optional and adds two things: your score is saved so you can compare it against a later retake, and you get to see where it sits among everyone else who has taken it.
How long does the microplastic exposure calculator take?
About two minutes. It asks up to 40 questions, grouped into short scenes covering what you eat and drink, your home, where you live, and your daily routine. Every answer is a tap, and if you leave partway through, your place is kept in the browser for when you come back.
What does my microplastic exposure score mean?
It runs from 1 to 100 and it is relative, not absolute. A higher number means more of the exposure routes described in the research apply to your routine. It is an estimate built from your answers, not a measurement taken from your body.
How is the exposure score calculated?
Each answer maps to a weighted factor drawn from published microplastic research, and every factor carries an evidence grade so better supported findings count for more. The scoring model, the individual weights, the evidence levels, and the full revision history are published on the methodology page.
Can the calculator measure how much plastic is in my body?
No, and no questionnaire can. Measuring particles in human tissue is laboratory work done on physical samples. What the calculator estimates is the exposure your routine creates, which is the part of the picture you can see and change.
What can I do about a high exposure score?
The results name the answers that pushed your score up and the ones already holding it down, so what you get is drawn from your own routine rather than generic advice. Most of what surfaces is small: what you drink water from, how food gets reheated, what the kitchen surfaces are made of.