How to track macros on keto

Keto is unusual among diets in that one macro rules all the others. Get your carbs low enough and your body shifts to running largely on fat; let them creep up and the whole thing unwinds. That makes tracking not optional but central — keto is a numbers diet, and the carb number is the one that matters most.

Set the carb ceiling first

Most people reach and hold ketosis by capping carbohydrates somewhere around 20 to 50 grams a day. Where you land in that range is individual, but the principle is the same: carbs are a strict budget, not a rough target. Done consistently, a very-low-carbohydrate ketogenic approach can produce greater long-term weight loss than a low-fat diet for some people — but only if the carb ceiling actually holds.

Count net carbs, not just total

On keto, the useful figure is net carbs: total carbohydrate minus fibre. Fibre is a carbohydrate your body cannot fully digest, and it does little to raise blood sugar — which is why keto followers subtract it. This is what lets you eat leafy greens, nuts, and avocado freely: they are high in total carbs but low in net carbs once the fibre comes out.

Let fat fill the rest

With carbs capped and protein moderate, fat is what is left to fuel your day, so it becomes your largest macro by calories. Lean on quality sources — olive oil, avocado, nuts, oily fish, eggs — rather than treating "high fat" as a licence for anything. Fat is calorie-dense, so it is still the easiest place to overshoot your daily total without noticing.

Keep protein moderate

Protein sits in the middle: enough to protect your muscle, especially if you are losing weight, but not treated as limitless. A steady, moderate intake spread across meals does the job. There is no need to fear protein on keto for most people, but it should not crowd out the fat that fuels you.

What a keto plate looks like

In practice, keto meals are built around protein and fat with low-net-carb vegetables filling the space starches usually would. A reliable shortlist:

• Proteins: eggs, chicken, beef, pork, salmon and other fish, and full-fat dairy like cheese and Greek yogurt.
• Fats: olive oil, butter, avocado, nuts and seeds, and the fat that comes with your protein.
• Low-net-carb vegetables: leafy greens, broccoli, cauliflower, courgette, peppers, mushrooms.
• Occasional extras: berries in small amounts, dark chocolate, and nut-based flours in place of wheat.

A typical day might be eggs cooked in butter, a big salad with salmon and olive oil, and steak with cauliflower mash — each plate naturally low in carbs without much effort once these foods are your defaults.

Where hidden carbs hide

Because the carb budget is so tight, a few unnoticed grams can quietly tip you out of ketosis. The usual culprits:

• Sauces and condiments — ketchup, barbecue sauce, and many dressings are sugar in disguise.
• Starchy vegetables and fruit — potatoes, corn, peas, bananas, and grapes add up fast.
• "Keto" packaged products — some rely on sugar alcohols that not everyone tolerates; trust the label less than a whole food.
• Drinks — a juice, a sweetened coffee, or a couple of beers can spend your whole day's carbs in one go.

This is exactly where tracking earns its keep: the carbs you forget to log are the ones that break the diet.

The adjustment period

Cutting carbs sharply can bring a few rough days as your body switches fuel sources — often called the "keto flu," with tiredness, headaches, and irritability that usually pass within a week or so. Staying well hydrated and keeping salt and other electrolytes up tends to ease the transition. Keto is not right for everyone, and if you have a medical condition, are pregnant, or take medication, it is genuinely worth speaking to a doctor before starting — this is a bigger dietary change than most.

How Eat'n'Fit helps

Eat'n'Fit makes keto's tracking manageable: scan or say what you ate and it breaks the meal into carbs, fat, and protein, counting your net carbs against a tight daily budget. Because meals stay editable before you log them, it is easy to catch a hidden carb before it tips you over — and to see, at a glance, whether the day's split really is keto or just close.