A simple calculation tool with PHP

Hi all,

I have a Google Doc spreadsheet where I make some ROI (return of investment) calculations. Simply I put a few values on the right pane and some other values are calculated (the four arithmetical operations) and displayed on the right pane.

Please see the attachment.

I need a PHP page that does the same thing. I'll publish it on my website.

I need a simple but elegant design. Would be great if you could show some previous work & design.

I need this to be done in a couple of days.

Source code should be clean and easy to understand (constant definitions etc) so my devs can change it later.


Skills: PHP

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About the Employer:
( 4 reviews ) London, United Kingdom

Project ID: #4991234

31 freelancers are bidding on average £132 for this job


Hi! Thanks for posting this requirement. We are TOP RATED professionals at [url removed, login to view] working since 2004. We are experts with design and development works. You may refer to our reviews and ranking here: http More

£515 GBP in 20 days
(77 Reviews)

Dear Sir, I explored your requirement and the File which you shared. It is a nice mathematical project to work. I have developed many complex application so far and delivered perfectly. I have few queri More

£263 GBP in 10 days
(123 Reviews)

Hello, With 99% completion rate, 600 successfully completed projects, and a 5.00 reputation... you can never go wrong choosing me :) I look forward to your reply. Thanks. Kind Regards, Rajesh Soni

£77 GBP in 1 day
(432 Reviews)

Dear Customer, We are European Website Development company (SafetyBis Ltd) can finish your project very fast and on professional level. Not the cheapest you will find, but I think you will find our pricing afforda More

£425 GBP in 3 days
(53 Reviews)

Hello Sri Technocrat will provide fully interactive application/website for your project. It will be developed as per your requirement document. We would invite your feedback and suggestions on the selected format s More

£105 GBP in 10 days
(48 Reviews)

Hi, I'm Huy. I'm happy to build this caculator with a pretty layout for you. I will need you help for formulas hence i'm not expert in this ROI area. Looking forward to work this for you. Thanks, Huy

£111 GBP in 3 days
(80 Reviews)

Hi I have checked the attachment. I can complete it within a day. Please accept the bid. I am ready to start it. Thanks Shihan

£55 GBP in 1 day
(229 Reviews)

Hi, I have rich experience in PHP/MySQL since 6 years. I have done more than 80+ projects here on [url removed, login to view] with full client's satisfaction. I have gone through the details and made understanding of the projec More

£150 GBP in 3 days
(73 Reviews)

Hi, We are quite comfortable to work on your Project with our excellent team of Programmers & Designers. Please see PMB for our company Work & Experience. Thanks

£100 GBP in 2 days
(28 Reviews)

Hi there, I am interested in working on this project....please check my reviews and then decide on [url removed, login to view] work guaranteed. Thanks, Ajit

£63 GBP in 3 days
(132 Reviews)

Hello, I will design & create an amazing page for you. Ready to start. Please let me know if you are interested. Thanks, Alex

£198 GBP in 3 days
(69 Reviews)

Hi, I am a php/mysql developer with 2years of experience in development. gone through the attached image and ready to do it for you. Please contact me if you are interested. Thanks, Salman Raza

£100 GBP in 2 days
(89 Reviews)

Dear Hiring Manager, Glad to be part of your project. I have reviewed your proposal as well as your attachment. we can do this as we have previous experience of similar types of jobs. -Can I have a look on the s More

£120 GBP in 3 days
(14 Reviews)

Hi, I have good experience on PHP, mysql, jQuery etc. I would like to work on your project. Regards Abani

£105 GBP in 5 days
(67 Reviews)

Hi, I am PHP expert and can make your ROI calculator in PHP as you need. Please see our Websites Portfolio: [url removed, login to view] [url removed, login to view] [url removed, login to view] [url removed, login to view] More

£100 GBP in 3 days
(5 Reviews)

I have experience of 7+years PHP, Wordpress development. We are expert in php, wordpress, codeigniter, Opencart, Magento, DRUPAL, CakePHP, mysql, javascript using jquery, html5, css3, bootstrap, photoshop and psd to ht More

£164 GBP in 3 days
(27 Reviews)

Simple job to perform. Will require the excell too to understand the formulas if you dont mind. Please invite us for a conversation so that we can shake hands soon. Few of our projects delivered to our clients in la More

£139 GBP in 3 days
(12 Reviews)

Hello LND, I have read your requirements, I'm a PHP Expert Developer and I am very confident to do this project. I guarantee complete satisfaction before payment. Please check PM for more details, Thank you!

£70 GBP in 0 days
(34 Reviews)

Hello i have build something like this before. It was a joomla extension. IO think i can develop this in a few hours. Is prozedual enough or would you like oop? And which is yout site so i can have a look for the desig More

£88 GBP in 1 day
(21 Reviews)

Greetings, I read and understand the your project requirement. I have 7 years experience in developing dynamic web and windows applications. So I can manage your project easily. I will give you the best work P More

£55 GBP in 0 days
(11 Reviews)