Big Red Calculator

Ad Free Big Red Calculator Available

JavaScript Needed

M-

M+

x²

1/x

−

Clear

History

Math Constants

Archimedes' Constant Pi
3.1415926535Alt-P

Natural Logarithmic Base
2.7182818284Alt-E

Golden Ratio
1.6180339887Alt-G

Euler's Constant
0.5772156649Alt-Y

Examples

To Compute	Button/Key Sequence
2 x 3	2×3=
(2 x 3) + 10	2×3+10=
2 x (3 + 10)	3+10×2=
√ 2	2
1/1024	10241/x
2 x √ 2	2×2=
-2³	2±×==
√ 3² + 4²	3x²+4x²=
π x 10²	10×=×Alt-P=
256 + 10%	256+10%=
5% of 25	5%×25=
5³ √ 2 + 6	2+6=1/x ×5===

Keyboard Shortcuts

Button	Key

0...9	0 ... 9	Digits

AC	Esc	All Clear
CE	Delete	Clear Entry
		Backspace
=	=orEnter	Equals
.	.	Decimal Point

+	+	Add
−	-	Subtract
×	*orX	Multiply
÷	/	Divide

M+	A	Memory Add
MC	C	Memory Clear
MR	R	Memory Recall
M-	S	Memory Subtract

±	I	Invert +/-

	F1	Square Root
%	F2	Percent
1/x	F3	Reciprocal 1/x
x²	F4	Squared x²

	Alt-P	π - Pi
	Alt-E	e - Natural Log
	Alt-G	ϕ - Golden Ratio
	Alt-Y	γ - Euler's Constant

Reset

Settings

Display

Floating Point

Digit Grouping

Decimal Symbol

0.0

Negative Number

0.0

Rounding

Round calculated Fixed Point results
when they are displayed.

Fix Math Errors

Turns 1.3499999999... into 1.35
From accuracy limit of 64-bit values.

Show Math

Displays math expression while it is
entered: E.g. 20 + 5 × 5 − 15

Save Work

Loads history, memory, and settings
when calculator is restarted.

To Calculator

Bookmark this link for the above settings . . .

Features

12-Digit display, 16-Digit math accuracy
Simple left to right math calculations
Fixed or floating point operation
4 Math operands (Add, Subtract, Multiply, Divide)
5 Math functions (Square Root, Squared, Reciprocal, Inverse, Percent)
4 Memory functions (Add, Subtract, Recall, Clear)
Clear all, clear entry, and backspace
Digit grouping 000's along with
international ',' and '.' use settings
Keyboard input with button feedback
Reusable math calculation history
(last 100 calculations)
Savable settings, history, memory, and display
Easy to repeat last operation
Displays math expression
Copy and paste values
Clear error messages
Resizable

About

Big Red Calculator - Version:

Created by Internet-Calculator.com

Internet Calculator develops calculators that excel in . . .

Accuracy
Robustness
Ease of use
Speed

Big Red Calculator is perfect for use in meetings, classrooms, and at home.

It's A Big Red Calculator . . .

Our Big Red Calculator is a four-function math calculator with memory, history, percent, plus more, and it's resizable too.

It also remembers its calculations when closed, so when opened again, the calculator is just where the user left off, even if that was in the middle of a calculation. Nice :-)

Buy an ad-free version here . . .

Big Red Calculator