Is there a way to get a few more than 15 decimals accuracy?

**harrell** · 09-15-2013, 12:58 PM

When I try to check a solution of 15 decimals, often Excel will miss compute the last decimal.

I have checked a computations that excel showed as wrong, and found out Excel was wrong at so many decimals.

**MrShorty** · 09-15-2013, 01:12 PM

It's not just Excel. Double precision (15 digits) has been the standard for computer computations for years. Occasionally I have seen add-ins that use numbers as text strings to get higher precision, but they don't seem to be universally accepted. I've also heard of some programming languages that offer quad-precision (30 digits), but, again, it is not very common. I think it is because it is a very rare problem that really needs better than parts per quadrillion precision. If your problem really needs better than parts per quadrillion precision, I would suggest that, in the long term, you will be better served by learning a programming language that offers quad-precision.