Exceljet

Quick, clean, and to the point

Get percent of year complete

Excel formula: Get percent of year complete
Generic formula 
=YEARFRAC(DATE(YEAR(date),1,1),date)
Explanation 

If you need to calculate the percent remaining in a year, based on a given date, you do so with a formula based on the YEARFRAC function.

In the example, the formula in C5, which calculates percentage of year remaining, is:

=YEARFRAC(DATE(YEAR(B5),1,1),B5)

How the formula works

the YEARFRAC function takes two dates, a start date and and an end date, and calculates the time between them in fractional years. In this case, we are using the end date as-is, but generating a start date that equals the first day of the same year with this bit of code:

DATE(YEAR(B5),1,1)

This extracts the year value from the date in B5 and plugs it into the DATE function, along with a 1 for both month and day.

The result is that the YEARFRAC function returns a decimal value that corresponds to the fraction of the year between the two dates.

When this value is formatted with the percentage number format, it shows percent of year complete.

Percent of year remaining

To calculate percent of year remaining, just adjust the formula to subtract the fractional year from 1. In the example, D5 contains this formula:

=1-YEARFRAC(DATE(YEAR(B5),1,1),B5)
Author 
Dave Bruns

Excel Formula Training

Formulas are the key to getting things done in Excel. In this accelerated training, you'll learn how to use formulas to manipulate text, work with dates and times, lookup values with VLOOKUP and INDEX & MATCH, count and sum with criteria, dynamically rank values, and create dynamic ranges. You'll also learn how to troubleshoot, trace errors, and fix problems. Instant access. See details here.

Excel foundational video course
Excel Pivot Table video training course
Excel formulas and functions video training course
Excel Shortcuts Video Course
Excel Charts video training course
Video training for Excel Tables