Converter-Calculator2.10 - App Store

This app is a bundle of 10 great Converter & Calculator apps for one low price & more are under development:
.Units Converter with over 1700 units in over 50 categories
.Currency Converter with over 160 currencies
.Hex-Decimal-Binary Converter
.IEEE754 Floating Point Converter
.Roman Numeral Converter
.Drill Bit Conveter
.Simple 4-Function Calculator
.Scientific Converter with up to 38 digits of precision
.Amortization Calculator
.A Collection of Reference Charts & Documents

Originally introduced in 2010 under the name of iGotCharts, this app originally contained a collection of reference charts and a modest units converter. However, it has grown to so much more since its introduction so we have changed its name to be more reflective of its full capabilities.

ConvertCalc was designed and developed by a professional engineer with over 45 years of metrology experience which is reflected in the features, capabilities, and accuracy of this app. It also has a very simple and attractive user interface.

You can easily disable units & charts you don't need and put them in whatever order best suits you, then save it as a favorite and quickly switch between your favorites and the app defaults. There is also a powerful search feature to simplify locating a unit of interest, regardless of category.

ConvertCalc is ideal for use in the kitchen as well as for engineering, surveying & scientific applications and anything in-between. Our conversion factors are consistent with NIST publications as well as other standards agencies and organizations such as API, BIPM, IAU, IEEE, IEC, etc. Every unit is defined & described. Whimsical units & systems such as smoots, FFF (furlong-firkin-fortnight) units and the Potrzebie System of units are also included for academic usage.

ConvertCalc uses 64-bit floating point math with a 52-bit significand, good for 15 significant digits of data presentation. We have developed advanced algorithms and proprietary conversion factors to maximize the computation accuracy. Where NIST or other agencies define an exact relationship between two units of measure, ConvertCalc will perform those calculations precisely without any rounding. Inexact conversions may have slight rounding in the 14th or 15th digit, which still provides at least 13 significant digits of accuracy.

It also includes a Hex-Decimal-Binary Converter with IEEE754 floating point notation capability and a Roman Numeral Converter. It also includes a Simple, Scientific and Amortization Calculator. The Scientific Calculator utilizes 64-bit base-10 decimal math providing 38 digit results.

General App Features:
. Retina support for both iPad and iPhone
. All orientations supported for all devices
. Swipe gestures simplify navigation and minimize button clutter
. Save favorites in any chart or unit category
. Quickly alphabetize or enable/disable all items in a category
. Reference charts and publications on a variety of topics
. Currency converter with over 160 currencies
. Extremely flexible units converter
. Definitions & descriptions of every chart and unit
. Print charts to Airprint printers
. Email feedback or charts from within the app

Units & Currency Converter Features:
. Enter & convert data in decimal, scientific, or fractional numbers
. Supports compound units (ft-in, st-lb-oz, hr-min-sec, etc.)
. Quickly & easily adjust output mode & display precision
. 64-bit math provides up to 15 significant digit conversions
. Use thumbwheel picker or tabular list to view conversions
. Indexed list of all individual units with powerful search feature
. Attractive graphics help identify the units
. Swipe up to update currency conversion rates
. Tap the equal sign to quickly swap the from/to units
. Tap the unit abbreviations for a description of that unit

We welcome your suggestions for additional units, charts, or other features. .

Version History Updated for compatibility with iOS 18
Added Palladium to the Currency Converter 2.10 12/24/2024 Bug fixes 2.09 06/13/2023 User Interface Improvements.
Updated for iOS 16 & iPhone 14 Compatibility. 2.08 10/12/2022 updated for iOS 13 and iPhone 11 compatibility
some chart updates 2.05 06/30/2020 Name change to better reflect the capabilities of this great app
Update for iOS11
Added a Calculator Category with Simple, Scientific & Amortization Calculators
Fixed some Typos 2.03 05/24/2018 Updated app for iOS8 compatibility.
Added a Hex-Decimal-Binary Converter with IEEE-754 Floating Point Support
Added a Solid Angle category.
Added over 60 new units & a number of new charts.
Corrected some typos. 2.02 10/08/2014 Added iOS7 support -- app now requires iOS7
UI revisions for iOS7 consistency
Fixed a few bugs and corrected some typos
Added a unit conversion category for Drill Bit Sizes
Added a Woodworking chart category
Added 8 new currencies to the Currency Converter and over 50 new units to various unit converters
Added several new reference charts
Changed the definitions for quarter bottles of wine and UK tuns 2.01 10/01/2013 ✓ Fixed a bug that kept downloaded charts from being printed or emailed
✓ Corrected some typos
✓ Corrected the conversion factors for firkin unit of mass and firkins per hundred furlongs
✓ Improved the resolution of several conversion factors
✓ Added 4 categories of radiation units
✓ Added support for the Potrzebie System of Weights & Measures including a chart describing the system and conversions for over 70 units in 40 categories
✓ Added a number of additional units in various categories including 11 large wine bottle sizes
✓ Added several more charts 1.08 12/24/2012 -Minor bug fixes.
-Corrected some typos.
-Added several more units. 1.07 09/28/2012 - Fixed a bug that kept the app from working on iPod Touch devices.
- Full screen support for iPhone5 and 5th generation iPod
- Tested for iOS6
- Added a Roman Numeral Conversion Feature
- Expanded the ASCII Reference Charts 1.06 09/22/2012 Fixed a bug that sometimes caused a crash on iPhone devices depending on a specific search sequence. It did not affect iPad usage.

Corrected a few typos.

Added two decibel charts to the metrology & geodesy charts category.

Added units categories of Sound, Frequency, Momentum (linear), Surface Tension, Angular Velocity, and Angular Momentum. The units in the Sound category can also be used for a wide range of power and amplitude ratio applications. Surface Tension units can also be used for thermodynamic applications. 1.05 07/14/2012 The currency rate server that we use has moved to a new location. We have updated the app to point to the new URL. We apologize for any inconvenience during the downtime.
Added a new indexed list of every unit with search capability. Use a pinch gesture on the units category view or tap a search icon on the units thumbwheel view.
Fixed a few minor bugs and added several surveying units including compound acres-roods-perches units using both international & survey feet. Also added several other units in various categories. 1.04 07/02/2012 - Corrected some typos
- Revised some unit definitions for better clarity and consistency
- Refined a few conversion factors for better accuracy
- Added units categories of Dynamic Viscosity, Kinematic Viscosity, Moment of Inertia, and Second Moment of Area
- Added a number of units to various categories 1.03 06/18/2012 -Fixed some bugs & corrected some typos.
-Added several units to Volume and Volumetric Flow Rate that are useful for petrochemical applications.
-Added Gas Mark to Temperature - handy for kitchen use if you have a gas oven.
-Added Roof Pitch to Angles - handy for carpenters.
-Added Inch, Foot, & Meter Diameter Circles to Area for easy calculation of circular areas
-Added the ability to enable/disable individual charts.
-Added the ability to enter new values in the converter table view without having to go back to the thumbwheel view. Just tap on a data value to enter a new number. Values for all units will update when you tap the Done button on the keypad. 1.02 04/13/2012 1.01 04/02/2012