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ketones.fyi

Ketone levels chart

In mmol/L, blood ketones are listed beside a urine strip pad, plus a breath reading that usually matches the same range.

A blood ketone meter and a notebook for logging ketone levels

Ketone levels chart

Blood ketones (mmol/L)StageUrine stripBreath (ppm)
0–0.3Not in ketosisNegative0–2
0.3–0.5Light ketosisTrace, 5 mg/dL2–5
0.5–1Light nutritional ketosisSmall, 15 mg/dL5–10
1–2.5Nutritional ketosisModerate, 40 mg/dL10–40
2.5–3Deep ketosisLarge, 80 mg/dL20–40
3 or moreHigh ketonesVery large, 160 mg/dL40 or more

All readings, 0.1 through 4 mmol/L

Blood ketones (mmol/L)mg/dLStageUrine strip, usualBreath (ppm), approximate
0.44.2Light ketosisTrace2–5
0.66.2Light nutritional ketosisSmall5–10
3.031.2High ketonesVery large40 or more

Urine strip readings and the blood equivalent

Strip padUrine (mg/dL)Acetoacetate (mmol/L)Blood, approximate (mmol/L)Stage
Negative000–0.3Not in ketosis
Trace50.50.3–0.6Light ketosis

Blood ketones and breath ppm

Breath acetone (ppm)Blood ketones, approximate (mmol/L)Stage
0–20–0.3Not in ketosis
2–50.3–0.6Light ketosis
5–100.5–1Light nutritional ketosis
10–201–2Nutritional ketosis
20–401.5–3Nutritional ketosis
40 or more3–6High ketones

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