Is my fast valid if I do not wear hijab?

Detailed answer

Your fast is valid. The conditions of a valid fast are being Muslim, making the intention and avoiding the things that break the fast, such as eating, drinking and intimate relations, from dawn to sunset. Wearing hijab is not one of them. So no one should tell you that your fasting "does not count".

Hijab and fasting are two separate duties

Most scholars, past and present, hold that covering the hair and body in front of non-mahram men is an obligation for adult Muslim women, based on verses such as An-Nur 24:31 and Al-Ahzab 33:59. But Islam does not work as "all or nothing". Each duty is counted separately, and falling short in one does not erase the reward of another. Allah says: "Whoever does an atom's weight of good will see it" (Az-Zalzalah 99:7).

In practice

• Keep fasting. Leaving the fast would add a second, more serious problem; see not fasting without an excuse.
• For prayer, covering is a condition of the prayer itself: a woman covers everything except her face and hands while praying, even at home alone. This is different from hijab in daily life.
• Guard your fast from other things that reduce its reward, like backbiting or indecent content.

A gentle word

Many women find that Ramadan, with its extra prayer, Quran and closeness to Allah, is the time they feel ready to start wearing hijab. Others take small steps first, such as wearing it to the mosque or on certain days. Make dua for strength, learn about the meaning behind hijab and surround yourself with supportive sisters. The Prophet said that the deeds most loved by Allah are those done consistently, even if they are small (Bukhari and Muslim).

If people around you judge harshly, remember that your relationship with Allah is not in their hands. Focus on doing more good, not on what others say. See also is my fast valid if I do not pray? and the rewards of fasting in Ramadan.