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Fiverr Pro
English
$
USD
I will convert excel to a custom web calculator or web app
Daniel Diaz
Level 2
4.6
4.6
About this gig
Tired of sending clunky Excel spreadsheets to your clients or team? Let's turn your complex formulas into a sleek, interactive, and fast custom web calculator.
I specialize in converting raw Excel logic into professional web tools. Whether you need a financial tool, a mortgage estimator, an ROI calculator, or a fitness tracker, I will transform your data into a premium user experience.
What I can build for you:
- Excel to Web Calculator: 100% accurate conversion of your formulas.
- Custom Web Apps: Financial, real estate, health, and pricing tools.
- Dynamic Visualization: Interactive charts and graphs (perfect for data).
- Lead Generation: Capture user emails before showing the results.
- Export Features: Let users download their results as PDF or CSV.
- Easy Integration: Ready to be embedded in WordPress, Wix, Shopify, or Custom Sites.
Why choose this gig?
Your calculator will be fully responsive, fast, and custom-designed to match your brand's identity.
IMPORTANT: Every spreadsheet is unique. Please message me with your Excel file BEFORE ordering to get an accurate quote!
Get to know Daniel Diaz
Daniel Diaz
Full Stack Software Engineer
Level 2
- FromArgentina
- Member sinceJun 2021
- Avg. response time1 hour
- Last delivery2 months
Languages
English, Spanish
Hello! I’m Daniel, a Full Stack Software Engineer.
With 3+ years of freelance experience, I've delivered 40+ projects for international clients.
As a Computer Science student, I specialize in taking ideas from concept to a deployed product. My expertise lies in building scalable backend architectures with Node.js, TypeScript, and AWS, alongside crafting high-performance interfaces using Next.js and React.
Whether you need a robust RESTful API, microservices with Docker, database optimization, or a custom SaaS platform, I deliver clean, maintainable code.
Let's build something great!
My Portfolio
FAQ
Can I easily add this calculator to my website (WordPress, Wix, Shopify)?
Yes! I will provide you with the clean, optimized source code or an easy-to-embed iframe snippet that you can paste directly into your website builder. If you need help, I offer an extra service to set it up for you.
Do I need to provide the mathematical formulas?
Yes. To ensure 100% accuracy, I need you to provide an Excel sheet (.xlsx) with the working formulas, or a detailed document explaining the mathematical logic step-by-step.
Will the calculator work and look good on mobile phones?
Absolutely. Every web calculator I build is fully responsive by default. It will look perfect and function smoothly on desktops, tablets, and smartphones.
Can I use this calculator to collect emails from my visitors?
Yes! Lead generation is one of the best uses for a web calculator. I can integrate a form that requires users to enter their name and email before seeing their results (available via Gig Extras).
Reviews
31 reviews for this Gig
| (25) | ||
| (4) | ||
| (1) | ||
| (1) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
S shoestring25
United States
Daniel was responsive, knowledgable & polite. You know you are in good hands when your trust the expert so much that you give them the wheel & rely on them to drive the process. When the initial goal was achieved & I saw how good it was, ideas surfaced to make it even better. Daniel graciously & immediately...
$100-$200
Price
8 days
Duration
Helpful?L lsgap01
Repeat Client
United States
Delivered quick enough
$100-$200
Price
4 days
Duration
D 
Seller's Response
Helpful?L lsgap01
Repeat Client
United States
Daniel was exceptional. His mastery and speed were above and beyond. I STRONGLY recommend his services to all.
$50-$100
Price
2 days
Duration
Helpful?G gashortsalepro
Repeat Client
United States
This was a small add on project to help me deploy the product I previously contracted for. It was done well.
Up to $50
Price
3 days
Duration
Helpful?G gashortsalepro
Repeat Client
United States
Got what I wanted done with very little back and forth at all. No language barrier, full understanding and attention to the communicated scope. Will work with Daniel again...
$200-$400
Price
6 days
Duration
Helpful?
Reviews
31 reviews for this Gig
| (25) | ||
| (4) | ||
| (1) | ||
| (1) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
S shoestring25
United States
Daniel was responsive, knowledgable & polite. You know you are in good hands when your trust the expert so much that you give them the wheel & rely on them to drive the process. When the initial goal was achieved & I saw how good it was, ideas surfaced to make it even better. Daniel graciously & immediately...
$100-$200
Price
8 days
Duration
Helpful?L lsgap01
Repeat Client
United States
Delivered quick enough
$100-$200
Price
4 days
Duration
D Seller's Response
Helpful?L lsgap01
Repeat Client
United States
Daniel was exceptional. His mastery and speed were above and beyond. I STRONGLY recommend his services to all.
$50-$100
Price
2 days
Duration
Helpful?G gashortsalepro
Repeat Client
United States
This was a small add on project to help me deploy the product I previously contracted for. It was done well.
Up to $50
Price
3 days
Duration
Helpful?G gashortsalepro
Repeat Client
United States
Got what I wanted done with very little back and forth at all. No language barrier, full understanding and attention to the communicated scope. Will work with Daniel again...
$200-$400
Price
6 days
Duration
Helpful?
