This emulator is supplied as is. Use it at your own risk! Always double-check important calculations
by other means.
some key bindings that make the emulator easier to use in typical usage.
Make sure the calculator is in focus (by clicking it) so it can receive the keystrokes.
Numbers, decimal point/comma and arithmetic (+, -, * or x, / or :)
'x' is the same as '*' (multiplication)
'=' equivalent to '+' (same key in most keyboards)
Enter/Return or Space = ENTER
Modifiers: (F, G, S, R) map to (f, g, STO, RCL) modifiers
H = CHS (change sign)
P = EEX
A, B, C, D, E map to top-row keys: square, exponential, power of 10, power and reciprocal
! = also maps to power (y**x)
\ = also maps to reciprocal (1/x)
I, J, K map to trigonometric function keys (SIN, COS, TAN)
Y = swap x with y (x<->y)
N or down arrow = Rotate down stack (R-down)
W = Add statistical tuple (sigma-plus key)
O = On/Off key (toggles between American, European and Indian thousand/decimal separators)
U = GSB key
T = GTO key
[ = R/S key
] = SST key
? = show memory dump (ugly HTML, mostly for debugging or plain curiosity)
Z = correct typing (Backspace also works in some browsers)
In case you need help to use the advanced features of 15C, take a look on
this quick reference guide
. There are lots of good material in the Internet, including the full manuals.
If you prefer a simpler calculator (with the basic financial and arithmetic operations) or if you
don't know the RPN notation, you can try
this form-based calculator
Also, try our version for
Android and iPhone
All rights reserved. It is
to copy this calculator to other sites.
Write me if you have any doubts.