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Uncertainty Calculator Screenshots
About Uncertainty Calculator
Uncertainty Calculator evaluates the error propagation throughout the mathematical expressions comprised of variables of uncertain value.
The application allows input of up to three value-error pairs (A, B and C), that can be used as a parameters in the final expression.
Error values should be provided in absolute (100 +/- 5) or in relative format, the latter should appear in percent format (100 +/- 5%).
The evaluated expression can include numerous functions, that provided by row of the appropriate buttons.
Components and functions can be added directly to the expression field by pressing the corresponding buttons. To encompass expression into the preset formula, select the expression and press the corresponding formula button.
Particular attention should be paid to placing brackets to avoid equation ambiguity.
The application deals with independent, random errors. So if this is a case never use A + A, but rather 2*A and never A*A*A but rather A^3! Obviously, different parameters can be combined in any way (A+B or C *A^2 .. is perfectly fine).
Angles for trigonometric functions can be provided in degrees or radians, and that should be reflected by setting a yellow button to "DEG" or "RAD". Bear in mind the importance of
units in any of calculations!
Implementation Examples:
1.The charge passing through an electrical circuit is defined by: Q = I * t, where I is the current and t is the time. Calculate the total charge value when a current of 0.15 ± 0.01 A passes through the circuit for 120 ± 1 s:
Input: A = 0.15 ± 0.01, B = 120 ± 1
The final expression will be A*B, and press Calculate:
The final value will be: 18 ± 1.2
Thus, it can be reported the total charge as 18 C ± 1 C.
Important! One should only report as many significant figures as are consistent with estimated error! So the value should be rounded to the rightmost decimal place at which error applies.
2. A ball is tossed straight up into the air with initial speed vo = (4.0± 0.2) m/s. After a time
t = (0.60 ± 10%) s, the height of the ball is h = vo*t - 0.5gt^2 = 0.636 m (g = 9.80 m/s^2). What is the value and uncertainty of height?
Input: A = vo = 4.0 ± 0.2, and B = t = 0.60 ± 10%, then the final expression should be:
A*B – 0.5*9.8*B^2
The final value will be: 0.6 ± 0.4 (meters).
The application allows input of up to three value-error pairs (A, B and C), that can be used as a parameters in the final expression.
Error values should be provided in absolute (100 +/- 5) or in relative format, the latter should appear in percent format (100 +/- 5%).
The evaluated expression can include numerous functions, that provided by row of the appropriate buttons.
Components and functions can be added directly to the expression field by pressing the corresponding buttons. To encompass expression into the preset formula, select the expression and press the corresponding formula button.
Particular attention should be paid to placing brackets to avoid equation ambiguity.
The application deals with independent, random errors. So if this is a case never use A + A, but rather 2*A and never A*A*A but rather A^3! Obviously, different parameters can be combined in any way (A+B or C *A^2 .. is perfectly fine).
Angles for trigonometric functions can be provided in degrees or radians, and that should be reflected by setting a yellow button to "DEG" or "RAD". Bear in mind the importance of
units in any of calculations!
Implementation Examples:
1.The charge passing through an electrical circuit is defined by: Q = I * t, where I is the current and t is the time. Calculate the total charge value when a current of 0.15 ± 0.01 A passes through the circuit for 120 ± 1 s:
Input: A = 0.15 ± 0.01, B = 120 ± 1
The final expression will be A*B, and press Calculate:
The final value will be: 18 ± 1.2
Thus, it can be reported the total charge as 18 C ± 1 C.
Important! One should only report as many significant figures as are consistent with estimated error! So the value should be rounded to the rightmost decimal place at which error applies.
2. A ball is tossed straight up into the air with initial speed vo = (4.0± 0.2) m/s. After a time
t = (0.60 ± 10%) s, the height of the ball is h = vo*t - 0.5gt^2 = 0.636 m (g = 9.80 m/s^2). What is the value and uncertainty of height?
Input: A = vo = 4.0 ± 0.2, and B = t = 0.60 ± 10%, then the final expression should be:
A*B – 0.5*9.8*B^2
The final value will be: 0.6 ± 0.4 (meters).
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What's New in the Latest Version 3.7
Last updated on Sep 9, 2023
Old Versions
Compatibility update.
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Version History
3.7
Sep 9, 2023
Compatibility update.
3.6
Jan 20, 2022
Compatibility update.
3.5
Jun 12, 2021
Compatibility update.
3.3
Jan 10, 2021
Compatibility update.
3.2
Oct 13, 2020
Compatibility update.
3.1
Oct 12, 2020
Compatibility update.
2.8
Apr 3, 2020
Compatibility update.
2.6
Feb 8, 2020
Compatibility update.
2.5
Aug 1, 2018
Compatibility update.
2.3
Jan 17, 2018
Compatibility update.
2.2
Dec 1, 2017
Compatibility update.
2.1
Jul 28, 2017
Compatibility update.
2.0
Jul 10, 2017
Compatibility update.
1.9
Jun 13, 2017
Compatibility update.
1.8
Mar 18, 2017
Compatibility update.
1.6
Nov 30, 2016
Compatibility update.
1.5
Nov 12, 2016
Compatibility update.
1.0
Oct 31, 2016
Uncertainty Calculator Price
Today:
$3.99
Lowest:
$2.99
Highest:
$3.99
Uncertainty Calculator FAQ
Click here to learn how to download Uncertainty Calculator in restricted country or region.
Check the following list to see the minimum requirements of Uncertainty Calculator.
iPhone
Requires iOS 16.0 or later.
iPad
Requires iPadOS 16.0 or later.
Uncertainty Calculator supports English