How I estimate finish time from current progress

An ETA is an estimate based on current progress and speed. It is useful, but it depends on the assumption that the pace stays similar.

The ETA Calculator tool handles the repetitive part so I can focus on checking whether the result makes sense.

The simple idea

An ETA is an estimate based on current progress and speed. It is useful, but it depends on the assumption that the pace stays similar.

I still treat the output as something to review, especially when it affects money, dates, privacy, or production data.

Step 1: Enter total work

Enter total work.

Step 2: Enter completed work

Enter completed work.

Step 3: Enter elapsed time

Enter elapsed time.

Step 4: Calculate the current rate

Calculate the current rate.

Step 5: Read the estimated finish time

Read the estimated finish time.

Step 6: Adjust expectations if the work rate will change

Adjust expectations if the work rate will change.

Step 7: Treat ETA as planning guidance, not a guarantee

Treat ETA as planning guidance, not a guarantee.

My checklist

Before I trust the result, I check:

• Enter total work.
• Enter completed work.
• Enter elapsed time.
• Calculate the current rate.
• Read the estimated finish time.
• Adjust expectations if the work rate will change.
• Treat ETA as planning guidance, not a guarantee.

A small tool is most useful when it makes the work visible and easy to verify.