Macro Calculator for Women
Macro calculator for women adapted to hormonal cycle and female metabolism.
Are macros different for women?
Women's macronutrient needs are qualitatively the same as men's, but with important quantitative and timing nuances. Female BMR is 5–10% lower at the same weight/height due to less muscle mass [¹]. The menstrual cycle modifies preferences and needs: the follicular phase (days 1–14) brings greater insulin sensitivity and better carbohydrate use; the luteal phase (days 15–28) increases basal calorie expenditure (~100–300 kcal more) and the body oxidises more fat as fuel [²]. Adjusting macros to the cycle can optimise performance and wellbeing.
How to use this calculator
Select 'Female' as sex and your target goal. Results are specific to female metabolism. In the luteal phase (2nd half of cycle), add 100–150 kcal extra, preferably from complex carbohydrates and protein, to compensate for higher expenditure and reduce premenstrual cravings.
Recommended macros for women by goal
| Goal | Protein | Carbs | Fat | Key note |
|---|---|---|---|---|
| Fat loss | 2.0–2.2 g/kg | 30–35% | 28–30% | High protein to preserve muscle |
| Maintenance | 1.6–1.8 g/kg | 40–45% | 28–30% | Hormonal balance |
| Muscle gain | 1.8–2.0 g/kg | 45–50% | 25–28% | Carbs for training |
FAQ
1Do women need more iron?
Yes. Women of childbearing age need 18 mg/day of iron versus 8 mg/day for adult men, due to menstrual losses [³]. Prioritise red meat, legumes and spinach, ideally with vitamin C to improve absorption.
2Should I eat differently in each cycle phase?
Not essential, but it can help. In the follicular phase (higher insulin sensitivity) load more carbs. In the luteal phase (higher thermogenesis and cravings) add 100–200 kcal of protein and complex carbs [²].
3Do hormonal contraceptives affect macros?
They can slightly reduce insulin sensitivity and modify the lipid profile. No radical macro changes are needed, but paying more attention to healthy fats and fibre can be beneficial.
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