Get the right answer every time.

PowerOne is a different kind of calculator that makes fast work of calculations you repeat regularly — plus a standard and RPN calculator for those you don't.

PowerOne templates

Quick and accurate.

Templates are similar to locked-down, mini-spreadsheets that increase accuracy and speed for repetitive calculations.

Get up-and-running fast.

We provide lots of pre-created templates for everything from finance, conversions, real estate, business, construction and more.

Everyone’s needs are different.

Not only can you pick and choose which templates you need, but you can also create your own. The simple language is more like writing sentences than writing equations.

Access PowerOne everywhere.

Whether on the go with an iPhone, iPad or Android phone or tablet, or at your desk on the web, PowerOne makes sure your critical calculations are available at your fingertips.

Keep everyone on the same page.

Share your templates with your team and customers, ensuring that everyone is performing the same calculations with overhead every single time.


Templates are designed like locked down, mini-spreadsheets. Enter the data you know. PowerOne will calculate the rest.



Some calculations are common and performed all the time. PowerOne comes with a library of off-the-shelf calculations you can use to get up-and-running quickly. Whether finance, conversions, real estate, investing, science and math, or construction, PowerOne has you covered.



While some calculations are common, there are millions more specific to you or your business. With PowerOne, it is easy to create powerful templates of your own. Just type an equation like you would a sentence and PowerOne will figure it out for you. Or get more sophisticated: create beautiful templates with embedded videos and images, with explanation text, lists and tables, units and hundreds of additional features to make it even easier for you, your team and your customers to perform their own calculations without having to think about the math.



The iOS and Android versions come with a sophisticated standard and RPN calculator to perform all your one-off calculations. There are hundreds of functions to help with everything from powers and logs to fraction and unit math.



Changes you make on one device automatically sync to your other systems. Whether working offline on iOS or Android or online on the web, your templates and calculator always remain up-to-date with the latest changes you’ve made and calculations you’ve run.



Keep your entire team or customers on the same page by sharing your templates with them. You never have to worry about them performing the wrong calculations with the wrong data as you can update and share your changes with them automatically at any time.


What others are saying

Multiple time Apple staff pick including Best of 2010


"The créme de la créme of calculators"


"Incredibly powerful tool for calculations of all kinds."

Smokin' Apps

"You need this calculator. It's miles better than the competition."

Robert Burns

"[PowerOne] sets the benchmark for other calculators to reach."

Fred Swan

"Not sure how I could do my job without PowerOne."

Arvid Martin

"… PowerOne shines."

Mac Observer