Health tool · Free · No sign-up

Diet Roadmap Planner

Calculate your macros and project your weight goals over time.

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About this tool

The Diet Roadmap Planner uses the highly accurate Mifflin-St Jeor equation to calculate your metabolic rate. By setting your timeline and goal, it automatically determines your daily calorie target, provides a scientifically balanced macro split (Protein, Carbs, Fats), and maps out a week-by-week projection of your weight changes. Everything runs locally in your browser ensuring complete privacy.

Key features

Dynamic Macro Splits

Automatically adjusts your protein, fat, and carb ratios based on whether you want to lose fat or gain muscle.

Timeline Projections

See exactly what weight you will hit at week 4, 8, 12, etc., based on strict mathematical models.

Safety Guardrails

Built-in limits prevent calorie recommendations from dropping into unhealthy or dangerous ranges.

How to use it

1Enter your basic physical stats (Age, Height, Weight, Gender).
2Select your daily activity level honestly for an accurate TDEE.
3Choose your goal (Loss, Maintain, or Gain).
4Adjust the timeline slider to see your projected weight changes over the coming weeks.

Common use cases

Planning a calorie deficit for a 12-week summer cut.
Setting accurate protein targets for a lean muscle bulking phase.
Checking how long it will mathematically take to hit a target weight.

Frequently asked questions

What formulas are used?

We use the Mifflin-St Jeor formula for BMR, which is widely considered the most accurate standard formula for healthy adults.

Is this safe?

Yes, the tool enforces minimum calorie thresholds (1200 for women, 1500 for men) to ensure recommendations remain in a healthy range, though you should always consult a doctor before starting a diet.

How are the macros calculated?

Macro ratios shift based on your goal. Fat loss prioritizes higher protein (40%) to preserve muscle, while muscle gain shifts higher toward carbohydrates (45%) to fuel intense training.

Private and free. Most of our tools run entirely in your browser, so the data you enter isn't uploaded or stored. There's no sign-up, and there never will be — they're built by the Fusion Trail Solutions team to be genuinely useful.