FORMULA & SQL / DATES

Age or years since a date.
Tested, not guessed.

The Excel and Google Sheets formula and the SQL query, each run on the rows below. Open this with your own data ↗

The example rows

Row	A: Region	B: Rep	C: Amount	D: Order Date	E: Status	F: Customer
2	North	Ana	1,200	2026-03-01	Paid	Jo Smith
3	South	Ben	450	2026-03-15	Open	Raj Patel
4	North	Cy	300	2026-04-02	Paid	Lee Wong
5	East	Ana	980.50	2026-04-20	Paid	Mia Ross
6	North	Ben	75	2026-05-05	Open	Jo Smith
7	West	Dee	1,640	2026-05-18	Paid	Sam Okoro

Excel

=DATEDIF(D2,TODAY(),"Y")

The number of whole years from Order Date (D2) to today.

Run on the example rows:

PostgreSQL

SELECT *, DATE_PART('year', AGE(order_date)) AS years
FROM sales

Other databases

MySQL

SELECT *, TIMESTAMPDIFF(YEAR, order_date, CURDATE()) AS years
FROM sales

SQL Server

SELECT *, DATEDIFF(year, order_date, GETDATE()) AS years
FROM sales

SQLite

SELECT *, CAST((julianday('now') - julianday(order_date)) / 365.25 AS INTEGER) AS years
FROM sales

BigQuery

SELECT *, DATE_DIFF(CURRENT_DATE(), order_date, YEAR) AS years
FROM sales

Snowflake

SELECT *, DATEDIFF(year, order_date, CURRENT_DATE) AS years
FROM sales

Paste your rows into the free tool and it writes this for your columns, then runs it on your data before you copy it. Open the tool ↗