TyG Index Calculator (Triglycerides × Glucose)
A research index based on fasting triglycerides and glucose, with TyG-BMI and TyG-WC derivatives.
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Calculation
Result
- TyG index
- 8.59 index
- TyG-BMI
- 227 index
- TyG-WC
- 756 index
- BMI
- 26.4 kg/m²
- Triglycerides
- 115 mg/dL
- Fasting glucose
- 94 mg/dL
Natural logarithm of half the product of concentrations in mg/dL, without a universal normal cutoff.
Product of TyG and BMI (kg/m²), without a diagnostic cutoff.
Product of TyG and waist circumference in centimetres, without a diagnostic cutoff.
Lee et al. (2018): research formula ln(TG × glucose / 2). Cutoffs from a different population or formula do not apply automatically. Reference ranges are population benchmarks from the cited sources. Laboratories use their own ranges, and interpretation depends on clinical context: discuss the result with your physician.
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How it is calculated
This calculator uses ln(TG × glucose / 2), with both concentrations in mg/dL, as in Lee et al. (2018). The alternative published variant ln(TG × glucose)/2 has a different numerical scale; its cutoffs cannot be transferred here.
Formula
TyG = ln[TG (mg/dL) × glucose (mg/dL) / 2]. TyG-BMI = TyG × BMI; TyG-WC = TyG × waist (cm).
Limits of the method
No universal diagnostic cutoffs are established for this calculation. The index does not confirm insulin resistance, diabetes or cardiovascular disease.
Sources of the method
- Lee J.W., Lim N.K., Park H.Y. TyG and type 2 diabetes risk in middle-aged Koreans. BMC Endocr Disord, 2018;18:33
- Simental-Mendía LE et al. The product of fasting glucose and triglycerides as surrogate for identifying insulin resistance in apparently healthy subjects. Metab Syndr Relat Disord, 2008
- Guerrero-Romero F et al. The product of triglycerides and glucose, a simple measure of insulin sensitivity. Comparison with the euglycemic-hyperinsulinemic clamp. J Clin Endocrinol Metab, 2010
- Sánchez-García A et al. Diagnostic Accuracy of the Triglyceride and Glucose Index for Insulin Resistance: A Systematic Review. Int J Endocrinol, 2020
This calculation is for reference only and is not medical advice, a diagnosis or a prescription. If you have a medical condition, are pregnant, take medication or have any doubts, discuss the result with a physician or a qualified nutrition professional.
How to calculate the TyG index
Take fasting triglycerides and glucose
Both are part of a standard blood chemistry panel. The draw must be fasting: post-meal triglycerides rise 1.5–2-fold and inflate the index.
Set the units from your report
The formula is defined for mg/dL. If your lab reports mmol/L, leave the switch on mmol/L — the calculator converts to mg/dL automatically.
Add weight, height and waist
TyG-BMI and TyG-WC detect visceral obesity and fatty liver more accurately than "plain" TyG. Measure the waist at the navel on exhalation.
Frequently asked questions
What is a normal TyG index?
No universal diagnostic cutoffs are established for this calculation. The index does not confirm insulin resistance, diabetes or cardiovascular disease.
Can TyG be calculated from results in mmol/L?
Yes. Triglycerides are multiplied by 88.57 and glucose by 18.016. The calculator does this automatically when the mmol/L mode is selected.
What are TyG-BMI and TyG-WC?
They are TyG multiplied by body mass index and by waist circumference respectively. They account for adiposity and in several studies detect NAFLD and metabolic syndrome more accurately than plain TyG: risk guides are TyG-BMI above 200–210 and TyG-WC above 750–800.
Does TyG replace the insulin test and HOMA-IR?
No universal diagnostic cutoffs are established for this calculation. The index does not confirm insulin resistance, diabetes or cardiovascular disease.
How can I lower the TyG index?
No universal diagnostic cutoffs are established for this calculation. The index does not confirm insulin resistance, diabetes or cardiovascular disease.
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What next
Formula breakdowns, biomarker reference ranges and nutrition articles with cited sources are in the NutriFit knowledge base.
Go to the knowledge base