How to Track Macros: Start With Protein, Not Perfection

“I am tracking everything I am eating but don't really know how to track my macros.” That's Antoinette W., in a review on Solin. If that's you, start here.

Macros are the three main nutrients that carry calories: protein, carbs and fat. Food labels count protein and carbs at 4 calories a gram and fat at 9, the factors FDA label rules use. So 30 grams of protein is 120 calories, and 10 grams of fat is 90.

You'll see splits like 30/30/40: the share of your calories from each of the three. That's one way to divide a day. You don't need a split to start.

Of the three, protein is the one to get right. You might not need to eat less. You might need to eat more, and you almost certainly need more protein. Our motto is “Strong, not starving.” Macros are how you make sure you eat enough.

The US Dietary Guidelines for 2025 to 2030 set a protein goal of 1.2 to 1.6 grams per kilogram of body weight a day. At 140 pounds (63.5 kg), that's about 75 to 100 grams, or 25 to 35 grams at each of three meals. If you're lifting to build muscle, here's how much protein lifters aim for.

For calories, a calculator turns your weight, height, age and activity into a rough daily total. Treat it as a first guess you'll adjust, not a verdict.

Solin Prime sets both numbers for you from your weight, your goal weight and how active you are. It aims high on protein: 1 gram per pound of the weight halfway between where you are and your goal. Protein is the one number we'd rather you go over than under. Sabrina H. said her challenge helped her with “making sure I hit my protein goals (macro eating all the way!).”

Log while the plate's still in front of you. At night you're guessing from memory. Use the quickest way for each food:

• Barcode for anything with a label: yogurt, bread, protein bars.
• Photo for a plate you made or ordered.
• Voice for small stuff: “a handful of almonds and a coffee with milk.”

Weigh only the foods you eat most, like your chicken, rice or oats, for a week. After that you'll know what 150 grams looks like on your plate. For everything else, a best guess beats a blank.

Watch raw versus cooked. The same 100 grams of chicken holds more protein once it's cooked. Log it the way you weighed it: raw weight as raw, cooked weight as cooked. Weigh 150 grams of roasted chicken and log it as raw, and your app says about 34 grams of protein. You ate about 47.

Eating out or eating what the kids left? Pick the closest match in the app. If it came out of a pan, log the oil too.

Some guides tell you to land within a few grams of each target. The numbers you're logging aren't that precise. Under FDA rules, a packaged food can hold up to 20% more calories than its label says. And when researchers checked what women said they ate the day before against a lab measure of what they burned, the women's totals came up 16 to 20% short.

So don't judge one day. Look at the week. If your protein is low most days, that's worth fixing. If you were 8 grams under on Tuesday, it isn't.

Log often, not long. In one 24-week program, the people who lost 5% or more of their weight logged in 2.4 times a day, the rest 1.6 times, but didn't spend more minutes on it. And the minutes shrank over the 24 weeks.

One tracker put it well in a Reddit thread on tracking fatigue: “Even if I'm just interacting with the app once a day to quick add some ridiculous number of calories that I've guessed at, it keeps the habit in place and provides some level of accountability without my life revolving around weighing and measuring food.”

Here's the plan we'd give a friend:

1. Two to three weeks, every day. You're learning what your usual meals hold.
2. Then a few days a week. Check that protein is still where you want it.
3. Back to every day when something changes. A new goal, a new routine, or the scale hasn't moved in a month.

It's a skill, like reading a label. Once you have it, you don't lose it. And your plate doesn't need to be perfect: we eat well about 80% of the time and enjoy the rest.

Tracking isn't for everyone. If counting makes you anxious, or you have or had an eating disorder, skip it and talk to your doctor or a dietitian first. In a study of 105 people with an eating disorder, about three in four had used a popular calorie-counting app, and nearly three in four of those said it had contributed to their eating disorder.

You can still eat for strength without a number. Build each meal around a protein, like eggs, Greek yogurt, chicken, tofu or beans, and add the rest around it. Our high-protein breakfasts are a good place to start.