FLOOR.MATH Excel function equivalence

[Marie-Helene_He]

How can I achieve the FLOOR.MATH function that exists in Excel into Airtable?

FLOOR and ROUNDDOWN are not taking the precision as I expect.

I would like floor with a 0.25 precision:

FLOOR.MATH(11.78, 0.25) is returning 11.75

whereas in Airtable:
FLOOR (11.78, 0.25) is returning 11.80
ROUNDDOWN(11.78, 0.25) is returning 11.25

[Justin_Barrett · Accepted solution]

A while back I discovered a problem with the CEILING() function, and was given a workaround by one of the Airtable staff:

CEILING(number/significance)*significance

A quick test shows that the same works for FLOOR()

FLOOR(number/significance)*significance

In your case, that would be

FLOOR(11.78 / 0.25) * 0.25