Folate Intake Calculator
Calculate your recommended daily folate (vitamin B9) intake based on age, gender, pregnancy status, and dietary habits.
Folate (Vitamin B9) is essential for DNA synthesis, cell division, and red blood cell formation. It is especially critical during pregnancy to prevent neural tube defects such as spina bifida. The synthetic form, folic acid, is found in supplements and fortified foods and is about 1.7 times more bioavailable than food folate.
Recommended Dietary Allowances (RDA) in Dietary Folate Equivalents (DFE):
| Age Group | RDA (mcg DFE) |
|---|---|
| 1–3 years | 150 mcg |
| 4–8 years | 200 mcg |
| 9–13 years | 300 mcg |
| 14+ years | 400 mcg |
| Pregnant women | 600 mcg |
| Lactating women | 500 mcg |
Dietary Folate Equivalent (DFE) Conversion:
1 mcg DFE = 1 mcg food folate = 0.6 mcg folic acid (from supplements/fortified food taken with meals) = 0.5 mcg folic acid (taken on empty stomach)
This means 400 mcg of folic acid from a supplement equals approximately 667 mcg DFE when taken with food.
Critical Pregnancy Note: Women who could become pregnant should consume 400–800 mcg of folic acid daily from supplements or fortified foods, in addition to food folate. Supplementation should begin at least one month before conception and continue through the first 12 weeks of pregnancy. Women with a history of neural tube defect pregnancies may need 4,000 mcg daily under medical supervision.
Top Folate-Rich Foods:
- Beef liver (3 oz): ~215 mcg DFE
- Spinach, cooked (1/2 cup): ~131 mcg DFE
- Black-eyed peas (1/2 cup): ~105 mcg DFE
- Asparagus (4 spears): ~89 mcg DFE
- Brussels sprouts (1/2 cup): ~78 mcg DFE
- Fortified breakfast cereal (1 serving): ~100–400 mcg DFE
Tolerable Upper Intake Level (UL): The UL for folic acid (synthetic form only) is 1,000 mcg/day for adults. There is no upper limit for naturally occurring food folate. High doses of folic acid can mask vitamin B12 deficiency, which is a concern especially for older adults.
Alcohol and Folate: Alcohol impairs folate absorption and increases urinary excretion. Regular alcohol consumption can significantly deplete folate stores. If you drink regularly, your folate needs may be higher than the standard recommendation.
Practical Tips: Folate is sensitive to heat and light. To maximize folate from food, eat leafy greens raw or lightly steamed. Store vegetables in the refrigerator away from light. Many grain products in the United States, Canada, and other countries are fortified with folic acid by law, which has significantly reduced the incidence of neural tube defects since fortification began in the late 1990s.