I love xlPrecision! It's allowing me to do something on a very important project that wouldn't have worked without the extra precision.

Mark Ryan, Chicago, IL
The Math Center, founder and educator
Author of Calculus for Dummies
More Customer Testimonials...

Stop letting Excel round your numbers to 15 digits! Get full precision now!

xlPrecision is an Add-In for Microsoft Excel that provides vastly more precise results from mathematical formulas than Excel provides on its own.

xlPrecision allows you to do arithmetic and other numeric analysis on very large numbers without rounding or truncating your numbers to 15 digits, as Excel does on its own. Don't be held back by Excel's limitation of only 15 significant digits!

xlPrecision also eliminates the stealthy binary conversion errors that plague spreadsheets.

xlPrecision also empowers you to use much larger (and much smaller) numbers than Excel allows on its own.

If you're a programmer, xlPrecision's arbitrary-precision (bignum, multi-precision) arithmetic library functions can be called directly from your own programming code.

xlPrecision offers many additional features that take you beyond Excel's capabilities in other ways. Read More....