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Calorie Deficit Calculator

Find a realistic calorie deficit based on your maintenance calories and how sustainable you want your approach to feel.

The biggest deficit is not always the best one. A realistic calorie target should help you make progress without making daily life miserable.

Your details

Not sure about maintenance yet? Calculate your TDEE first

kcal
Preferred pace

Your estimated daily targets

Maintenance calories: 2,200 kcal

Gentle deficit

1,914kcal

About 286 kcal under maintenance

Moderate deficit

Your preferred pace

1,716kcal

About 484 kcal under maintenance

Aggressive deficit

1,540kcal

About 660 kcal under maintenance

A smaller, steadier deficit is often easier to sustain than a more aggressive one. The best plan is usually the one you can actually stick with.

Note on aggressive deficits

A larger deficit can feel harder to sustain and may affect energy, training, and hunger for some people. If you choose a faster pace, consider extra rest days, protein, and a plan to revisit calories after a few weeks.

How to choose a calorie deficit

Start from maintenance (or a solid TDEE estimate), then pick a pace that fits your real life—not just your ideal week. If you are newer to tracking, gentle often builds better habits than jumping to the largest deficit.

Hunger, energy, sleep, and training quality are useful signals. If multiple areas feel off, the answer is often a smaller adjustment or more time—not more willpower.

You can change pace later. Many people begin moderate, reassess after a few weeks, then nudge calories up or down in small steps.

Approach comparison

Gentle pace

A smaller daily gap from maintenance. Often the easiest to repeat week after week, especially if life is busy or training matters to you.

Example target: 1,914 kcal/day

Moderate pace

A middle ground many people can hold with a bit of structure—without feeling like every day is “on or off.”

Example target: 1,716 kcal/day

Aggressive pace

A larger gap can speed things up for some people, but it usually asks more of your consistency, sleep, and recovery.

Example target: 1,540 kcal/day

FAQs

It depends on your maintenance calories, how fast you want to move, and what you can repeat most days. This tool shows gentle, moderate, and aggressive examples so you can pick a pace that feels realistic—not punishing.
Not automatically. A bigger deficit can work for some people for a while, but it is often harder to sustain and can backfire if it spikes cravings, fatigue, or “all-or-nothing” cycles.
Common reasons include unintentionally eating more than you think, water weight shifts, sleep and stress changes, or needing more time than a week or two to see a trend. If you are stuck for many weeks, small structured changes usually beat drastic cuts.
If things are moving in a direction you feel good about, a check-in every few weeks is plenty. If you are drained or progress has stalled for a long stretch, a small tweak beats a full reset every few days.
One day is normal life. What matters most is what you do most of the time. You can simply return to your usual plan the next day—no “make-up” punishment required.

Ready to make this practical?

HeyOakley helps you turn targets into everyday habits—without living in a spreadsheet.

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