EtG Calculator — Understand Your Results With Confidence

Simply input your details into the fields provided, and the calculator will instantly generate an estimated detection window based on your inputs.

No, your inputs and results are processed locally in your browser and are not stored on our servers for your privacy.

It depends on how much you drank, your metabolism, and the test’s cutoff level, but EtG is commonly detectable anywhere from 24 up to about 80 hours after drinking. See our full detection window guide for a detailed breakdown.

Lower cutoffs like 100 ng/mL are more sensitive and used in strict monitoring programs, while higher cutoffs like 500 ng/mL generally only catch more recent or heavier drinking. Read our cutoff levels guide to see which applies to your situation.

Yes, it’s possible — especially with a sensitive 100 ng/mL cutoff. See how long after one drink EtG shows up for a closer look at what affects this.

A standard alcohol urine test detects ethanol itself, which clears quickly, while EtG is a metabolite that stays detectable much longer. Our EtG vs. regular alcohol test guide breaks down the difference in full.

EtG half-life is how long it takes your EtG level to drop by half, which determines how fast you approach a test cutoff. Try the EtG Half-Life Calculator to estimate your own decline curve.

EtS (ethyl sulfate) is a second alcohol metabolite that’s more chemically stable than EtG, so labs often run both together to catch what either marker might miss alone. Try the EtS Calculator to estimate your own level.

Hydration can dilute a urine sample and lower the measured concentration, but it doesn’t actually speed up how quickly your liver clears EtG from your body — the two are easy to confuse.