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$
USD
I will build a custom online calculator for your website
NumanSultan
About this gig
Need a calculator that works perfectly on your website? I build fast, accurate, mobile-friendly online calculators that are ready to embed.
I'm the developer behind CalPro (calprocalculators.com), a live site with 290+ calculators, so I bring tested experience to your project.
WHAT I BUILD
- Finance: mortgage, loan, EMI, savings, ROI, retirement
- Tax and salary: take-home pay, income tax, VAT/GST
- Business: pricing, profit margin, break-even, quotes
- Health: BMI, calorie, macro calculators
- Construction: paint, flooring, concrete estimators
- Any custom formula you describe
WHAT YOU GET
- Responsive design for phone, tablet and desktop
- Accurate logic, tested with your sample cases
- Clean, fast code (HTML, CSS, JavaScript)
- Works on WordPress, Wix, Shopify, Webflow or any site
- Branding to match your colors and logo
- Optional charts, PDF export and SEO text
- Full source code and install help
TO START
Send me your formula, input fields, example results and your website platform. Message me before ordering if you want a quote for a bigger project.
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know NumanSultan
NumanSultan
Developers and coder
- FromPakistan
- Member sinceDec 2025
- Avg. response time1 hour
Languages
English, Urdu
I am Numan Sultan, a Senior Full-Stack Developer specializing in the Laravel Ecosystem with over 1 year of professional experience in architecting high-performance web applications.
Throughout my career, I have moved beyond just writing code—I focus on System Architecture, Scalability, and Security. I have successfully delivered 50+ projects, ranging from complex SaaS platforms and Multi-tenant systems to high-traffic RESTful APIs.
My Technical Arsenal:
Backend: Laravel 11.x, PHP 8.3, Node.js, SOLID Principles, Design Patterns.
Frontend: Vue.js, React, Inertia.js, Livewire, Tailwind CSS.
