A simple, evidence-based macro calculator to help you find a realistic starting point for fat loss, maintenance, or muscle growth — no extreme diets required.
Calculate My MacrosThey need a clear, honest starting point. Guessing calories, following generic online plans, or swinging between restriction and overeating rarely leads anywhere good. A personalised estimate gives you something real to work from.
The problem with guessing
Without a baseline, most women either eat far too little and stall their metabolism, or eat more than they realise and wonder why nothing is changing. Neither is your fault — you just didn't have the right information.
What a starting point actually does
Knowing your estimated calorie and macro targets removes the confusion. You stop second-guessing every meal and start building consistency — which is the only thing that actually creates lasting results.
Why macros matter more than calories alone
Protein supports muscle retention and keeps you full. Carbs fuel your training and your mood. Fat supports hormones and satiety. Getting the balance right means you can eat the foods you love and still make progress.
This is a starting point, not a prescription
These numbers are evidence-based estimates. Real progress comes from using them as a foundation, tracking how your body responds, and adjusting over time. Consistency and patience will always outperform perfection.
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If you want someone to take these targets and build a real, sustainable plan around your life — your schedule, your food preferences, your goals — that's exactly what coaching is for.
No, and that's intentional. These are evidence-based estimates calculated using the Mifflin-St Jeor formula, which is one of the most validated methods for estimating calorie needs. But every body is different. Hormones, sleep quality, stress levels, gut health, and training history all influence how your body uses energy. Think of these numbers as a strong, informed starting point — not a fixed prescription. The goal is to start somewhere sensible and adjust based on how you feel and how your body responds over 2–4 weeks.
That's completely normal, and it doesn't mean the calculator is wrong or that you're doing something wrong. Nutrition is not a one-size-fits-all equation. If after 2–3 weeks of consistent tracking you're not seeing the changes you expected, that's useful data. It means it's time to make a small adjustment — usually 100–200 calories in either direction. Progress in nutrition is iterative. The most important thing is consistency and patience, not perfection from day one.
Yes. The calculator adjusts your calorie target based on your selected goal. For fat loss, it applies a moderate deficit (around 15–20%) to support steady, sustainable fat loss while preserving muscle mass. For muscle building, it applies a modest surplus (around 10%) to support muscle growth without excessive fat gain. For maintenance, it targets your TDEE directly. In all cases, protein is set high enough to support body composition goals, which is one of the most important factors regardless of your goal.
No. Tracking is a tool, not a lifestyle sentence. Most people find that tracking consistently for 8–12 weeks builds a strong intuitive understanding of portion sizes and food composition. After that, many women are able to maintain their results with a much lighter approach — checking in occasionally rather than tracking every meal. The goal is always to build knowledge and confidence, not dependency. Tracking is the education phase. What comes after is the freedom phase.
This calculator uses the Mifflin-St Jeor equation to estimate your Basal Metabolic Rate (BMR) — the number of calories your body needs at complete rest. Your BMR is then multiplied by an activity factor to give your Total Daily Energy Expenditure (TDEE). A goal-based adjustment is then applied. Macros are distributed based on your protein preference, a baseline fat allocation (around 25% of calories), with carbohydrates filling the remainder. This is a well-validated, practical approach used widely in evidence-based nutrition practice.
This tool is designed for generally healthy adults and is for educational purposes only. If you have a medical condition — including but not limited to diabetes, thyroid disorders, PCOS, disordered eating history, or any condition that affects metabolism or nutritional needs — please consult a qualified healthcare professional or registered dietitian before making changes to your diet. These numbers are estimates and are not a substitute for personalised medical nutrition therapy.