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Formula & Units 螢幕截圖
About Formula & Units
Formula & Units is an ultimate tool for calculation of complex scientific expressions and convertion of scientific units. Expressions may be comprised of variables and constants, possessing numeric values and sets of units.
Support and info at www.volard.wordpress.com
The application interface consists of three custom (A, B, C) value-units expressions and six preset constants, which may be added to the final expression field by pressing the corresponding buttons.
Value-Units Expression contains three fields: value field, numerator (top) units field and denominator (bottom) units field.
Units must be typed exactly as they appear in the provided list in the Help section. Power of unit is typed directly after unit : s2. Metric prefixes or unit prefixes are recognized automatically: mm = 1.0e-3 m, kA = 1000 A. Metric prefix micro- (1e-6), is changed to 'u'. Additional Units can be added upon request through www.volard.wordpress.com.
Example of unit expression as it should appear in numerator or denominator fields: mm2*s*kg*uA-2*MPa-2.
Upon addition or subtraction, unit expressions should be of the same dimensionality! Meters cannot be added to Pascals!!!
Application provides set of widely used physico-chemical constants. Pressing the corresponding constant button adds the value to the final field.
Presets are: Na - Avogadro's constant, h - Planck constant, F - Faraday constant, R - gas constant, kB - Boltzmann constant, g - acceleration of gravity, e - elementary charge, Pi - pi constant. (All in SI units)
The final expression is a regular scientific formula consisting of value-units expressions, regular math operations, numbers and functions. Available math functions are provided with buttons-shortcuts.
Dot is used as a decimal point.
Pressing "Calculate" button evaluates final expression. By default, application converts all units to International System of Units (SI), but it is possible to set the required units directly to the final (where result is shown) units fields before calculation, then the result will be adjusted to meet the requirement.
The resulting final expression can be copied to A expression field, by pressing a "A^" top bar button, for further conversion or calculations.
For a simple conversion, type the expression that should be converted to A field and preferred units to the B field.
Special attention should be paid to dimensionality! For example: To change m3 to US Gallon in expression s*kg/m3, type gal-1 to numerator field or gal to denominator field in the B expression. Press 'convert' button to get the final converted result. For conversion numeric value of B expression has no meaning.
Examples can be found at www.volard.wordpress.com.
Support and info at www.volard.wordpress.com
The application interface consists of three custom (A, B, C) value-units expressions and six preset constants, which may be added to the final expression field by pressing the corresponding buttons.
Value-Units Expression contains three fields: value field, numerator (top) units field and denominator (bottom) units field.
Units must be typed exactly as they appear in the provided list in the Help section. Power of unit is typed directly after unit : s2. Metric prefixes or unit prefixes are recognized automatically: mm = 1.0e-3 m, kA = 1000 A. Metric prefix micro- (1e-6), is changed to 'u'. Additional Units can be added upon request through www.volard.wordpress.com.
Example of unit expression as it should appear in numerator or denominator fields: mm2*s*kg*uA-2*MPa-2.
Upon addition or subtraction, unit expressions should be of the same dimensionality! Meters cannot be added to Pascals!!!
Application provides set of widely used physico-chemical constants. Pressing the corresponding constant button adds the value to the final field.
Presets are: Na - Avogadro's constant, h - Planck constant, F - Faraday constant, R - gas constant, kB - Boltzmann constant, g - acceleration of gravity, e - elementary charge, Pi - pi constant. (All in SI units)
The final expression is a regular scientific formula consisting of value-units expressions, regular math operations, numbers and functions. Available math functions are provided with buttons-shortcuts.
Dot is used as a decimal point.
Pressing "Calculate" button evaluates final expression. By default, application converts all units to International System of Units (SI), but it is possible to set the required units directly to the final (where result is shown) units fields before calculation, then the result will be adjusted to meet the requirement.
The resulting final expression can be copied to A expression field, by pressing a "A^" top bar button, for further conversion or calculations.
For a simple conversion, type the expression that should be converted to A field and preferred units to the B field.
Special attention should be paid to dimensionality! For example: To change m3 to US Gallon in expression s*kg/m3, type gal-1 to numerator field or gal to denominator field in the B expression. Press 'convert' button to get the final converted result. For conversion numeric value of B expression has no meaning.
Examples can be found at www.volard.wordpress.com.
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最新版本4.7更新日誌
Last updated on 2023年12月04日
歷史版本
Compatibility update.
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Version History
4.7
2023年12月04日
Compatibility update.
4.6
2022年01月20日
Compatibility update.
4.5
2021年07月18日
Compatibility update.
4.3
2021年01月08日
The update brings new improved mechanism of units adjusment on the fly, upon calculation of formula.
4.1
2020年08月29日
Compatibility update.
4.0
2020年04月03日
Compatibility update.
3.8
2020年02月18日
Compatibility update.
3.7
2019年03月22日
Compatibility update.
3.6
2019年01月17日
Pressing space key while editing units or formula fields, automatically appends multiplication mark, *, to simplify the edition.
3.4
2018年08月01日
Compatibility update.
3.3
2018年02月06日
Compatibility update.
3.2
2018年01月15日
Compatibility update.
3.0
2017年12月08日
Compatibility update.
2.9
2017年11月30日
Compatibility update.
2.8
2017年10月09日
Compatibility update.
2.7
2017年10月07日
Compatibility update.
2.6
2017年09月28日
Numerous enhancements. Capable of simultanious evaluation of numeric and unit parts of expressions for unlimited range of scientific formulas.
2.3
2017年08月10日
Compatibility update.
2.2
2017年07月10日
Compatibility update.
2.1
2017年07月06日
Formula & Units 價格
今日:
$3.99
最低價格:
$2.99
最高價格:
$3.99
Formula & Units FAQ
點擊此處瞭解如何在受限國家或地區下載Formula & Units。
以下為Formula & Units的最低配置要求。
iPhone
Requires iOS 16.0 or later.
iPad
Requires iPadOS 16.0 or later.
Formula & Units支持English