# Calorie Deficit Calculator

> Work out a daily calorie deficit from your maintenance estimate and intake, or the intake that produces a deficit you choose. Also plans backwards from a target weight by date or weekly rate.

**URL:** https://www.calculatoranswers.com/calorie-deficit-calculator
**Category:** Health

## Quick Answer

Subtract intake from your maintenance estimate to get a daily deficit, or subtract a chosen deficit from maintenance to get the matching intake. Goal-planning modes work backwards from a target weight.

## Definition

A calorie deficit occurs when the number of calories consumed is lower than the total daily energy expenditure required to maintain current body weight. A calorie deficit calculator estimates the daily energy reduction needed to achieve a target weight by a specific date or at a chosen weekly weight loss rate. It performs two kinds of calculation. The day-to-day modes are exact subtraction against a maintenance figure the user supplies: intake gives the deficit, and a chosen deficit gives the intake. The goal-planning modes convert a weight difference into calories using the static historical figure of 3,500 per pound and divide by time, which is a rough scale rather than a prediction because energy needs fall as body mass falls. The calculator does not collect age, height or activity level, and does not decide what deficit is appropriate for anyone

## How to Use

1. **Pick a mode** — Choose Deficit from intake or Intake for a deficit for exact arithmetic, or By target date or By weekly rate to plan backwards from a goal weight.
2. **Enter your maintenance estimate** — Type the maintenance calorie figure you use, then either your intake, the deficit you want to model, or a goal weight with a date or weekly rate.
3. **Read the result** — The day-to-day modes return an exact deficit or intake. The goal-planning modes return a rough timeline built on a static calorie-per-pound conversion.

## Disclaimer

This calculator provides estimates for educational and planning purposes. Always consult a qualified professional for specific advice on financial, medical, legal, or other regulated decisions.

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