How to Convert Triglycerides mmol/L to mg/dL
Triglycerides are reported in mmol/L in most countries and mg/dL in the US. The conversion factor is 88.57, higher than cholesterol's 38.67 because triglyceride molecules are heavier.
Triglycerides mg/dL = Triglycerides mmol/L × 88.57 Triglycerides mmol/L = Triglycerides mg/dL ÷ 88.57 Triglycerides mmol/L to mg/dL Chart
| mmol/L | mg/dL | Typical band |
|---|---|---|
| 1.0 mmol/L | 88.6 mg/dL | Normal |
| 1.7 mmol/L | 150.6 mg/dL | Normal / borderline border |
| 2.3 mmol/L | 203.7 mg/dL | High |
| 3.0 mmol/L | 265.7 mg/dL | High |
| 5.6 mmol/L | 495.9 mg/dL | Approaching very high |
| 11.3 mmol/L | 1000.8 mg/dL | Very high — pancreatitis risk |
mg/dL to mmol/L Reverse Chart
| mg/dL | mmol/L |
|---|---|
| 100 mg/dL | 1.13 mmol/L |
| 150 mg/dL | 1.69 mmol/L |
| 200 mg/dL | 2.26 mmol/L |
| 500 mg/dL | 5.64 mmol/L |
| 1000 mg/dL | 11.29 mmol/L |
Triglyceride Reference Ranges
Commonly cited fasting triglyceride bands (they vary by guideline and lab):
| Category | mg/dL | mmol/L |
|---|---|---|
| Normal | Below 150 mg/dL | Below 1.7 mmol/L |
| Borderline high | 150–199 mg/dL | 1.7–2.25 mmol/L |
| High | 200–499 mg/dL | 2.26–5.64 mmol/L |
| Very high | 500 mg/dL and above | 5.65 mmol/L and above |
Triglycerides are usually measured fasting, because a recent fatty meal can raise them substantially. A single non-fasting result is interpreted with more caution.
Very High Triglycerides and Pancreatitis
Unlike modestly raised triglycerides, very high levels — roughly above 500 mg/dL (5.6 mmol/L), and especially above 1,000 mg/dL (11.3 mmol/L) — raise the risk of acute pancreatitis. That is why very high triglycerides are treated more urgently than a borderline result, often with diet, alcohol reduction, and medication.
Triglycerides and the LDL Calculation
High triglycerides also affect how LDL is worked out. When triglycerides exceed 400 mg/dL (about 4.5 mmol/L), the Friedewald estimate used on most lab reports becomes unreliable, and a direct LDL or the Martin-Hopkins method is used instead. See the LDL cholesterol calculator for that, and the cholesterol conversion calculator for the whole panel.
Worked Example
Suppose your triglycerides are 2.3 mmol/L and you want mg/dL:
2.3 × 88.57 = 203.7 mg/dL 203.7 mg/dL is in the high band. For the reverse direction, 150 mg/dL is about 1.69 mmol/L, the top of normal.
Frequently Asked Questions
How do you convert triglycerides mmol/L to mg/dL?
Multiply mmol/L by 88.57. For example, 1.7 mmol/L equals about 150 mg/dL.
What is a normal triglyceride level?
Below 150 mg/dL (1.7 mmol/L) fasting is normal; 500 mg/dL (5.65 mmol/L) or above is very high.
Why is the triglyceride factor different from cholesterol?
Triglyceride molecules are heavier, so they use 88.57 while cholesterol uses 38.67.
When do high triglycerides become dangerous?
Very high levels (above ~500–1000 mg/dL) raise the risk of acute pancreatitis and need prompt treatment.
References
- GPnotebook — Conversion of triglycerides mmol/L to mg/dL.
- Triglycerides factor 88.57 (mmol/L ↔ mg/dL); NCEP/ATP triglyceride reference ranges (standard clinical laboratory references).
Conclusion
Converting triglycerides between mmol/L and mg/dL is a simple ×88.57. Just remember the level matters: very high triglycerides carry a pancreatitis risk and disrupt the LDL estimate — interpret them with your full lipid panel and healthcare provider.