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Fiverr Pro
English
$
USD
I will build a custom web calculator or interactive tool
Umar
About this gig
Need a custom calculator or interactive web tool for your website?
I will build a fast, responsive, and easy-to-use calculator or browser-based tool using HTML, CSS, JavaScript, or React.
I can create:
Cost and price calculators
Weight and material calculators
ROI and profit calculators
Estimators and custom formulas
Unit converters
Interactive web tools
Youll get a clean interface, custom functionality, responsive design, and a working tool built around your requirements.
Send me your idea, formula, or example, and Ill turn it into a functional web tool.
Get to know Umar
Umar
Web Tool Developer HTML CSS JavaScript React
- FromPakistan
- Member sinceMay 2026
Languages
Urdu, English
I build custom web tools, interactive calculators, and browser-based utilities using HTML, CSS, JavaScript, and React.
I create fast, responsive, and easy-to-use tools including calculators, cost estimators, converters, generators, image tools, PDF tools, and custom web applications.
I can turn your idea or requirements into a clean, functional web tool for a standalone page or existing website.
I focus on reliable functionality, responsive design, clean UI, and a simple user experience.
FAQ
What information do you need to build my calculator?
I need the calculation formula or logic, required inputs and outputs, and any design example or reference you have.
Can you build a calculator from an Excel file or formula?
Yes. I can turn clear Excel formulas or calculation logic into a responsive web calculator.
Can you create a calculator with custom design?
Yes. I can match your preferred layout, colors, styling, and overall design.
Will the calculator work on mobile devices?
Yes. The calculator will be designed to work responsively across desktop, tablet, and mobile screens.
Can you build calculators for complex formulas?
Yes. I can build calculators with multiple inputs, conditions, formulas, and custom calculation logic. Please contact me first for very complex requirements.
Will I receive the source code?
Source code is available according to the package you select. It can also be added as an extra where applicable.
