ETA Calculator

ETA stands for estimated time of arrival. This calculator gives you one in two ways. From a distance and a speed, it works out travel time and the clock time you will arrive. From progress on a task, it projects when the work will be done. For example, 300 km at 100 km/h takes 3 hours, so leaving at 9:00 AM means arriving at 12:00 PM.

In Distance / Speed mode, travel time is simply distance divided by speed. Enter the distance in kilometers, miles or meters and the speed in km/h, mph or m/s. Units can be mixed, since the tool converts both to km and km/h first. The departure time starts at now, but you can set any future date and time to plan ahead. The answer assumes a steady average speed with no stops. Add time for fuel, food and traffic yourself.

In Progress / Rate mode, enter the total number of items, how many are done and when you started. The tool divides the finished items by the time spent to get a rate per hour. Then it assumes the same rate for the rest. If you have done 250 of 1,000 items in one hour, the rest should take 3 more hours. It also shows percent complete, items left, elapsed time and time left. The estimate refreshes every 15 seconds.

This works well for file copies, data jobs, grading a stack of papers or any steady, repeated task. If the pace changes a lot, update the completed count often. For running times, the Pace Calculator is a better fit. To add a set time span to a date, use Add and Subtract Days.