Losertown Calculator: BMR, TDEE & Weight-Loss Plan
The Losertown Calculator helps you turn your current weight, goal weight, activity level and chosen calorie deficit into an estimated weight loss plan. It shows your BMR, TDEE, daily calorie target and a weekly timeline in UK-friendly stones and pounds, with metric units available too.
Use the results as a planning guide rather than a fixed promise. Real progress can change because of routine, sleep, stress, health, food tracking accuracy and day-to-day activity.
How to use it
- Enter your age, sex, height, current weight and goal weight.
- Choose the activity level that best matches your normal week.
- Select a calorie deficit, then calculate your estimated timeline.
What it shows
You will see estimated maintenance calories, target calories, time to goal and a weekly projection. These figures are useful for planning, but they should not replace personal advice from a qualified health professional.
The timeline is based on standard calorie maths and estimated energy needs. It is helpful for setting a direction, but it cannot predict every change in appetite, water weight, training routine or metabolism.
For example, if someone wants to lose one stone and chooses a moderate daily deficit, the calculator can estimate a weekly path toward that goal. If their activity, calorie intake or weight trend changes, the timeline should be recalculated.
What is the Losertown Calculator?
The Losertown Calculator is a weight loss planning tool that estimates your BMR, TDEE, daily calorie target and possible time to goal. It is designed to make calorie planning easier, especially for people who prefer stones, pounds, feet and inches.
How does the weight loss timeline work?
The calculator estimates your BMR, adjusts it by your selected activity level to estimate TDEE, then subtracts your chosen calorie deficit. The weekly projection updates as your estimated weight changes, so the timeline is more practical than a simple straight-line estimate.
What is BMR and how is it calculated?
BMR, or Basal Metabolic Rate, is an estimate of the calories your body uses at rest. This calculator uses the Mifflin-St Jeor equation with your age, sex, height and weight to estimate that number.
What is TDEE and why does it matter?
TDEE, or Total Daily Energy Expenditure, is your estimated daily calorie use after activity is included. It matters because it gives you a starting point for choosing a calorie target for weight loss or maintenance.
How many calories should I cut to lose 1 stone?
One stone is 14 pounds, or about 6.35 kilograms. A moderate daily deficit can often take several weeks to show a one-stone change, but the exact time depends on your starting weight, activity, consistency and normal weight fluctuations.
What is a safe weekly weight loss rate in the UK?
A steady rate is usually easier to maintain than a very aggressive cut. Many people aim for gradual progress, and anyone with a medical condition, pregnancy, a history of disordered eating or medication concerns should speak with a qualified health professional first.
Why does the projection curve slow down over time?
As weight reduces, the body usually needs fewer calories than before. That means the same calorie target may create a smaller deficit later, so the projected pace can slow down instead of staying perfectly straight.
Can I use stones and pounds instead of kilograms?
Yes. You can use stones, pounds, feet and inches, or switch to kilograms and centimetres from the units dropdown. The results will follow the unit system you choose.
What's the difference between this and other calorie calculators?
This calculator combines UK-friendly units with BMR, TDEE, target calories and a weekly timeline in one place. It also includes a chart, CSV export and shareable results, so it is useful for planning and checking progress again later.
How accurate is the calorie deficit calculator?
The calculator gives an estimate, not a guarantee. Your actual results can be affected by tracking accuracy, water weight, sleep, stress, hormones, training, health conditions and how consistently the plan is followed.