FREE TOOL · MIFFLIN-ST JEOR · ACSM · WHO · NIN-ICMR 2024

Weight Loss
Timeline Calculator.

Enter your current weight, goal weight, and activity level. Get a realistic target date, a month-by-month milestone plan, personalised calorie targets, and a full macro breakdown.

An educational planning estimate, not medical advice. Individual results vary.

Mifflin-St Jeor REE Equation
Recalculated Every Week
4-Scenario Comparison
Month-by-Month Milestones
⚖️

Your Weight Loss Profile

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Mifflin-St Jeor REE · Adaptive TDEE recalculation · Dynamic projection

YOUR TIMELINE
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Weeks
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kcal / Day
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kg / Week
Complete the form
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About this tool

The DietXP Weight Loss Timeline Calculator estimates how long it will realistically take to reach a goal weight. Rather than dividing the kilograms you want to lose by a fixed weekly rate, it rebuilds your Mifflin-St Jeor resting energy (REE) and total daily energy use every single week as your weight falls, so the projection bends the way real weight loss does instead of running in a straight line. It grades your chosen pace against your own body weight, holds your intake at a safe minimum for your sex rather than pushing you into very-low-calorie territory, and turns the result into a month-by-month milestone plan with calorie and macro targets. Your details stay private and are never sent to us.

WHAT YOU GET

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Estimated Goal DateProjected date at your chosen pace
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4-Scenario CompareSlow · Recommended · Faster · Aggressive
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Monthly MilestonesWeek-by-week weight projections
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Calorie + Macro TargetsDaily protein, carbs, fat
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BMI JourneyCurrent → goal BMI category
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PDF ReportPrint or share your plan

NEED MORE?

Get a Full
Fat Loss Plan

Combine your timeline with a structured meal plan, portion guide, and weekly check-in, built for Indian food preferences.

Book Consultation →

BASED ON

Mifflin-St Jeor 1990Well-validated resting energy (REE) equation for healthy adults
Wishnofsky 19581 kg fat ≈ 7,700 kcal, a historical approximation
NHS / CDCCommonly cited safe range: 0.5–1.0 kg/week
ICMR-NIN 2024Asian-Indian BMI cut-offs · ~0.5 kg/week · floor 1,000 kcal
WHO / NHSGlobal BMI classification (shown as secondary)

TRY ALSO

💧
Water Intake CalculatorDaily hydration target · 9-slot schedule
 📐
WHR CalculatorWaist-to-Hip · WHO risk levels
 🧬
Smart Health CalculatorBMI · TDEE · Macros all-in-one

Frequently asked questions

How accurate is a weight loss timeline calculator?

It is a planning estimate, not a promise. It is more realistic than the common 7,700 kcal per kg rule because it works out your daily energy needs afresh every week as your weight falls, which is the single biggest reason simpler calculators run optimistic. It still cannot see your adherence, sleep, stress, medication or hormonal changes, and real-world loss almost always runs slower than any equation predicts. Treat the goal date as the earliest realistic date if you stay consistent.

Why does my goal date move further away than a simple calculation suggests?

Because a lighter body burns fewer calories. Dividing kilograms to lose by a weekly rate assumes your energy expenditure never changes, but resting energy use falls as weight drops, so the same calorie intake produces a smaller deficit each week. This calculator works your daily energy needs out again every week, which pushes the honest goal date later than the simple sum does.

What is a safe rate of weight loss per week?

0.5 to 1.0 kg per week is the range commonly cited by CDC and NHS-style guidance, and ICMR-NIN 2024 describes about 0.5 kg per week as safe. The top of that range is not automatically safe for everyone, which is why the more useful test is relative: roughly up to 1% of your current body weight per week. One kilogram a week is a moderate 0.8% for someone starting at 120 kg but an aggressive 1.8% for someone starting at 55 kg. This tool grades your chosen pace against your own body weight rather than applying one fixed cut-off to everybody.

Why does the calculator refuse to go below a certain calorie level?

There is a safe lower limit so the plan does not drift into very-low-calorie territory, which should only be followed under medical supervision: 1,200 kcal a day for women and 1,500 kcal a day for men. Both sit above the 1,000 kcal a day minimum that ICMR-NIN 2024 sets for weight-reduction diets. If your chosen pace would mean eating less than that limit, your target is held there, the tool tells you so, and it shows the slower rate you will realistically achieve.

How much protein should I eat while losing weight?

Higher protein intakes help preserve lean mass in a calorie deficit. This tool targets roughly 2 g per kg of your goal weight rather than your current weight, because prescribing per kilogram of current weight badly overshoots for people carrying a lot of excess fat mass. The result is capped at 40% of your daily calories so the macro split stays workable.

Is a 1 kg per week loss the same as losing 1 kg of fat?

No. Early weeks include a drop in glycogen and its bound water, which is why the first fortnight often looks dramatic and then slows. Over a full programme some lean tissue is lost alongside fat, and that share grows as the deficit gets steeper. Adequate protein and resistance training are what shift the balance back toward fat.

⚕️ For educational purposes only. Individual results vary based on adherence, metabolism, health conditions, and many other factors. People with diabetes, eating disorders, or other medical conditions must consult their physician before beginning any calorie-deficit programme. Not a substitute for professional medical or dietetic advice.

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