I will build custom interactive web calculators converters or tools

S
shahabkhan06
S
shahabkhan06
Shahab Naseem
build custom interactive web calculators converters or tools
build custom interactive web calculators converters or tools
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build custom interactive web calculators converters or toolsbuild custom interactive web calculators converters or toolsbuild custom interactive web calculators converters or tools

About this gig

Need a custom interactive tool, calculator, or converter to engage users and boost conversions on your website?


I build lightweight, high-performance web calculators, converters, and client-side utility tools using clean JavaScript (ES6+), HTML5, and CSS3.


️ What I Specialize In:

Financial & ROI: Mortgage, Loan, Profit Margin, Currency Converters

Health & Fitness: BMI, Calorie, Macro, Body Fat Calculators

Utility & Logic: QR Generators, Formatter Tools, Custom Pricing Estimators

Client-Side Processing: In-browser Image Compressors & PDF Exporters


Why Work With Me:

Zero-Latency: 100% client-side execution (no server lag)

Responsive: Pixel-perfect across desktop, tablet, and mobile

Easy Integration: Embeds into WordPress, Shopify, Webflow, or Custom HTML

Clean Code: Maintainable, bug-free, and well-documented


Please send me a message with your formulas or requirements, and let's get started!

  • Website type

    • Business

  • Programming language

    • HTML & CSS
    • JavaScript
    • Python
    • Kotlin
    • Tailwind CSS

  • Website features

    • Marketing
    • Forum
    • Social media
    • Customer support
    • Analytics
    • Form
    • Dashboard
    • Reviews
    • Landing page
    • Blog
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 Shahab Naseem

Shahab Naseem

Software Engineer

  • FromPakistan
  • Member sinceAug 2026
  • Avg. response time1 hour

  • Languages

    Urdu, English
Hi, I'm Shahab Khan — a Software Engineering student at Iqra University specializing in client-side web applications, interactive web calculators, and responsive landing pages. I focus on building lightweight, zero-latency web tools, single-page utility suites, and modern frontend interfaces using pure JavaScript (ES6+), HTML5, and CSS3. Whether you need a custom pricing calculator, a high-converting landing page, or interactive tools for your website, I deliver clean, mobile-responsive, and fast-loading code. Let's collaborate to make your website more engaging

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