EPA:DHA Ratio Worksheet: Three Examples and the Most Common Calculation Errors

EPA:DHA ratio is simple arithmetic, but label structure can create mistakes. Use these examples only to understand the calculation method.

Example 1: Simple Ratio

If a full serving lists 600 mg EPA and 300 mg DHA, divide both by 300. The ratio is 2:1.

Example 2: Ratio Below 1

If a full serving lists 250 mg EPA and 500 mg DHA, EPA ÷ DHA equals 0.5, which can be expressed as 1:2.

Example 3: Same Ratio, Different Total Amount

A product with 200 mg EPA and 100 mg DHA has the same 2:1 ratio as one with 600 mg EPA and 300 mg DHA, but the delivered amounts differ substantially.

Common Error: Mixing Serving Bases

Do not use EPA per capsule with DHA per two-capsule serving.

Common Error: Calling Ratio “Concentration”

Ratio compares EPA with DHA. Concentration uses a different denominator such as total oil.

Common Error: Dividing by Zero

If DHA is zero or not separately disclosed, a conventional EPA:DHA ratio cannot be calculated.

Practice With a Current Label

You can apply the worksheet to the current Nutribota Omega-3 label by using its current DHA/EPA amounts and labeled serving size. Treat the live product page as the source of truth rather than a static historical example.

Bottom Line

Ratios describe relative composition only. Always keep milligram amount and serving size beside the ratio.