
set up for chain caculations such doing a check book
being able add or subtract from totals/results
3 votes 
pi^4/90=1/1^4+1/2^4+1/3^4+1/4^4+1/5^4
you guys need to update the site the answer is 1,0804 and that make Pi=3140
1 vote 
tan(pi) is currently coming up as infinity. please fix.
tan(pi) is currently coming up as infinity. please fix.
3 votes 
(Sine, Cosine, Tangent) to the negative first power
Add buttons for sin^1, cos^1 and tan^1.
2 votes 
6 votes

Put a Sin^(1) button.
To reverse finding out the side vs the angle of a triangle
5 votes 
3 votes

Currency does not work
The currency converter keeps reverting to the last country in the list  very infuriating. I put in Euros and then Sterling but when I put the number into say Euros it changes the Serling to Zambian currency
2 votes 
Let us customize it to our liking
Allow us to customize it. I dislike it being black, white, and some odd green...It doesn't make it enjoyable to use.
4 votes 
Filter out unwanted characters.
First, great calculator! Thanks for the tool!  Second, if you enter/paste in a value that has illegal characters in it, the calculator breaks. Example: "139,359.99" breaks because of the comma. If you do a find and replace or a regex replace and remove the unusable characters on change, this shouldn't happen. Thanks!
4 votes 
1 vote

1 vote

solve by typeing in a equation
what i said up there
5 votes 
Put a negitive sign on the calculator.
It would be nice to use negatives to do more complicated problems than having an error come up.....
67 votes 
A button that lets you see the multiples/divisibles of a number
A button that lets you see the multiples/divisibles of a number
2 votes 
Every time i wanted to convert $ to other currency, it automatically changed $ to ZMK!!! why??
Every time i wanted to convert $ to other currency, it automatically changed $ to ZMK!!! why??
1 vote 
Add a shift key that inverse the original function.
Enables inverse of tan, cos, sin etc. without many more cumbersome buttons.
3 votes 
Algebra calculator!
When I type 3x*2y it says:"Error. Undefined symbol X".
6 votes 
Missing Button. There is no a b/c button
There is no a b/c button (that is fractions)
4 votes 
When we look up a previous formula we can transfer the formula directly to the input line but what we usually want is the result!
It would be nice to have either the formula or the result. If a single tap on the result transferred it to the formula line and a double tap were to bring up the other options!
0 votes
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