Duração jejum estendido
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
24/36/48 horas
About this calculator
The extended fasting duration calculator helps convert hours into days, making it easier to track and plan fasting periods. Intermittent fasting (IF) involves prolonged periods without calorie intake, and this tool simplifies converting 24h (1 day), 36h (1.5 days), and 48h (2 days) for clearer comparison.
The formula is straightforward: every 24 hours equals 1 day. Thus, 36 hours correspond to 1.5 days, and 48 hours to 2 full days. This is useful for those following methods like 16/8 fasting or longer extensions such as 24/36/48h, common in fat loss or cellular detox strategies.
This tool is recommended for individuals planning prolonged fasts, such as preparing for intense physical activities or adjusting eating schedules. However, it's essential to consult a healthcare professional before starting extended fasts, especially in cases of diabetes, hypothyroidism, or other metabolic issues.
To use the calculator, simply input the fasting period in hours or days. The conversion is instant, and you receive the real-time duration. Always monitor your body's signals, such as fatigue or discomfort, and adjust the duration accordingly.
Frequently asked questions
Why convert hours to days for fasting?
The conversion helps better visualize the fasting duration, making it easier to plan routines and avoid confusion between hours and days.
How does the conversion formula work?
The formula divides the number of hours by 24. For example, 36 hours equal 1.5 days (36 ÷ 24 = 1.5).
Is it safe to fast for 36 or 48 hours?
Extended fasts should be supervised by a healthcare professional, especially for individuals with pre-existing medical conditions.
Can I use this calculator for fasts shorter than 24 hours?
No, the tool is specifically designed for 24h, 36h, and 48h fasts. For shorter periods, use another conversion method.
How to track fasting time?
Use a countdown app or digital clock to ensure accuracy and avoid interruptions.