Enter your details to get started
Try an example, or enter your own values above.
How to use the Calorie Calculator
- Select gender and enter age, height, and weight.
- Pick the option that best matches your typical weekly activity.
- Click Calculate Calories to see your BMR and daily maintenance calories.
- Use the Copy or Share buttons to save or send your result.
Tip: To lose weight, eat below your maintenance calories; to gain weight, eat above it — a deficit or surplus of 500 cal/day roughly equals 0.5kg per week.
Common mistakes to avoid
- Overestimating activity level, which inflates the calorie estimate.
- Entering height in feet/inches instead of centimeters.
- Confusing BMR (resting calories) with maintenance calories (BMR × activity).
How calories are calculated
The Mifflin-St Jeor formula
BMR (men) = 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5. BMR (women) = 10 × weight(kg) + 6.25 × height(cm) − 5 × age − 161. Maintenance Calories (TDEE) = BMR × Activity Multiplier.
When to use this tool
Useful for setting weight loss, maintenance, or muscle-gain calorie targets as a starting point for nutrition planning.
✓ Pros
- Works instantly, right in your browser
- Uses the widely-cited Mifflin-St Jeor equation
- No sign-up, no ads blocking the result
✕ Limitations
- An estimate, not a lab-measured metabolic rate
- Activity level selection is subjective
- Doesn’t account for muscle mass or medical conditions
Quick Activity Level Reference
What each activity level multiplier represents.
| Multiplier | Level | Typical Activity |
|---|---|---|
1.2 | Sedentary | Little to no exercise |
1.55 | Moderate | Exercise 3-5 days/week |
1.9 | Athlete | Twice-daily intense training |
Choose the activity level that most closely matches your typical week, not your best or worst week.
Features
BMR + maintenance calories
Instant results
No data stored
Mobile friendly
How TickmarkTools compares
An honest, feature-by-feature look at browser-based calculator tools.
| Feature | TickmarkTools | Typical free sites | Premium suites |
|---|---|---|---|
| Price | Free | Free / freemium | Free tier + paid plans |
| Sign-up required | No | Often yes | Yes |
| Data leaves your device | Never | Usually | Usually |
| Watermark on export | None | Sometimes | On free tier |
| Mobile friendly | ✓ | Varies | ✓ |
| Works without account | ✓ | Varies | ✗ |
These are general, illustrative observations about common patterns across free online calculator tools as a category — not verified or benchmarked data about any specific named competitor or product. Individual sites vary and may differ from what's shown here.
Why you can trust this tool
No data stored
Your input is never saved or logged.
Secure processing
All processing happens client-side in your browser.
Fast processing
Results render in milliseconds, no waiting.
Mobile friendly
Use this tool from any device.
No sign-up
No account, no email, no watermark.
Works offline*
Once loaded, this tool needs no internet connection.
Accuracy & limitations
This calculator is built for speed and accuracy, but it's worth understanding what it does and doesn't account for:
- An estimate only. This uses a well-established formula, but actual metabolic rate can only be precisely measured in a lab.
- Subjective activity level. Choosing the right activity multiplier requires honest self-assessment of your typical week.
- Doesn’t account for individual factors. Muscle mass, medical conditions, and medications can all affect actual calorie needs beyond this estimate.
Calorie Calculator FAQ
Yes, the Calorie Calculator is completely free with no sign-up required.
No — all calculations happen locally in your browser.
BMR (Basal Metabolic Rate) is the number of calories your body burns at complete rest just to maintain basic functions.
Eat fewer calories than your maintenance number — a deficit of about 500 calories/day typically results in roughly 0.5kg of weight loss per week.
Pick the option that best matches your typical week, not your best or worst week of exercise.
No. All calculations run entirely in your browser, and nothing you enter is ever sent to a server or stored.
💡 Quick Help
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