Estimate Range: Using 'from... to...' for Estimations

This usage is correct and indicates an estimated range from one value to another. For example:

• The estimate for the project cost ranges from $50,000 to $70,000.
• The estimated time to complete the task is from 2 to 3 hours.

It's important to note that this expression represents an estimate, not an exact value, and may have some margin of error. Therefore, exercise caution in practical situations and strive to provide more precise data whenever possible.