When considering the average cost to replace roof shingles, several factors come into play, including the type of shingles chosen and the size of your roof. Local variations in labor and material prices can also affect the overall expense, making it essential to consult with professional roofers in your area. Typically, the average cost to replace roof shingles ranges from $3.50 to $5.50 per square foot, but this can vary significantly based on specific circumstances. For an accurate estimate, it's advisable to obtain multiple quotes from local roofing services who specialize in shingle replacement. Taking the time to research can ultimately ensure you're receiving a fair average cost to replace roof shingles without compromising on quality.