Losertown Calculator
The classic weight loss projection tool, now with full unit support. Enter your stats in lbs or kg and your height in inches, cm, or feet, then see exactly what you'll weigh on future dates and the date you'll hit your goal. Free and private, by Online Tools.
Goal Weight Date
Maintenance Calories
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Daily Deficit
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Weekly Weight Change
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Total to Lose
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Days to Goal
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Weight in 90 Days
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Weight in 6 Months
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Weight in 1 Year
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About This Tool
The Losertown Calculator is the classic weight loss projection tool that shows you exactly what you will weigh on future dates based on your daily calorie intake. This version supports both imperial (pounds and inches/feet) and metric (kilograms and centimeters) units, so it works for everyone. Instead of a single goal date, it builds a full timeline, projecting your weight at 90 days, 6 months, and a year, and pinpointing the exact calendar date you will reach your goal weight if you stick to your calories.
The tool calculates your maintenance calories using the trusted Mifflin-St Jeor equation, compares them to the calories you eat, and turns the resulting daily deficit into projected weight over time. It is the same simple, motivating concept the original Losertown made popular: see your future self on the scale, then decide if your calorie target gets you there fast enough.
How the Losertown Calculator Works
The projection runs in a few clear steps:
- Choose your units: switch between pounds and kilograms with one tap, height accepts feet and inches or centimeters
- Maintenance calories (TDEE): your BMR from the Mifflin-St Jeor equation multiplied by your activity level
- Daily deficit: maintenance calories minus your daily calorie intake
- Weight change: about 3,500 calories equals 1 pound (7,700 calories per kg) of body fat, so your deficit converts to weight lost per week
- Timeline projection: the calculator applies that daily change forward day by day to estimate your weight on future dates and your goal date
Mifflin-St Jeor Equation Used
Maintenance calories start from your Basal Metabolic Rate (BMR), then get multiplied by an activity factor. Internally the tool converts everything to metric and uses the standard equation:
| Sex | BMR Formula (kg and cm) |
|---|---|
| Male | (10 × kg) + (6.25 × cm) − (5 × age) + 5 |
| Female | (10 × kg) + (6.25 × cm) − (5 × age) − 161 |
BMR is then multiplied by your activity factor (1.2 sedentary up to 1.9 extra active) to get your total daily energy expenditure, or maintenance calories.
Safe Weight Loss Guidelines
A healthy, sustainable rate of weight loss for most adults is 1 to 2 pounds (about 0.5 to 1 kg) per week, which comes from a daily deficit of about 500 to 1,000 calories. Here is how deficits translate to results:
| Daily Deficit | Weekly Loss | Pace |
|---|---|---|
| 250 calories | ~0.5 lb (0.23 kg) | Slow and steady |
| 500 calories | ~1 lb (0.45 kg) | Recommended |
| 750 calories | ~1.5 lb (0.68 kg) | Moderate |
| 1,000 calories | ~2 lb (0.9 kg) | Aggressive but acceptable |
| Over 1,000 calories | 2+ lb | Consult a professional |
Benefits of Using the Losertown Calculator
- Works in any units: full support for lbs/in and kg/cm
- See your future weight: get projected weight at 90 days, 6 months, and a year
- Find your goal date: see the exact calendar date you will hit your target
- Stay motivated: a concrete date is far more motivating than a vague goal
- Test calorie targets: lower your intake and watch your goal date move closer
- Free and private: runs in your browser, no signup, nothing stored