Weight Loss Calorie Calculator

kg
kg
weeks
Health Updated 16 Jun 2026

Weight Loss Calorie Calculator is a health and wellness calculator that helps you calculate calorie values based on body data or activity level. The formula used is: Daily Deficit = (Weight to Lose × 7700) ÷ (Weeks × 7); Target Calories = TDEE − Daily Deficit. Enter values using the units shown next to each input field (e.g. kg, cm, years).

Formula

Daily Deficit = (Weight to Lose × 7700) ÷ (Weeks × 7); Target Calories = TDEE − Daily Deficit

Example Calculation

Inputs
  • Current Weight: 80 kg
  • Target Weight: 70 kg
  • Weeks to Reach Goal: 12 weeks

Suppose you enter: Current Weight = 80, Target Weight = 70, Weeks to Reach Goal = 12. The calculator applies the formula (Daily Deficit = (Weight to Lose × 7700) ÷ (Weeks × 7); Target Calories = TDEE − Daily Deficit) and shows all output values below. Change any input field to immediately see how the result changes.

Frequently asked questions

What is the Weight Loss Calorie?
The Weight Loss Calorie Calculator is a health and wellness calculator that helps you calculate calorie values based on body data or activity level. Enter values using the units shown next to each input field (e.g. kg, cm, years).
When should I use this calculator?
Use this calculator whenever you need a quick, accurate result for calorie values based on body data or activity level without working through the arithmetic manually.
What units should I enter?
Enter values using the units shown next to each input field (e.g. kg, cm, years).
How accurate are the results?
This calculator uses widely accepted health formulas and returns screening estimates only. It does not replace a diagnosis from a qualified healthcare professional.
How do I interpret the result?
Compare your result with published reference ranges. Values outside the normal range warrant a conversation with your doctor.
How can I verify the calculation manually?
Use the displayed formula and work through the numbers step by step. If your manual result differs slightly, check rounding and unit conversions first.
Can I use this for planning and budgeting?
Yes. Run best-case, expected, and worst-case inputs to compare outcomes and make safer planning decisions.