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English
$
USD
I will build a custom web calculator, pricing tool, or instant quote estimator
Sifdin C
Level 2
1 order in queue
5.0
5.0
Gig Summary
About this gig
Turn your pricing rules and formulas into a responsive web calculator that captures qualified leads and automates estimates.
With 12+ years of experience and +1000 orders and 5-star reviews, I build fast and mobile-friendly calculators tailored to your business logic
What I Can Build For You
- Instant Quote & Cost Estimators (service businesses, contractors, agencies, cleaners, roofers)
- Pricing & Profitability Calculators
- Finance & Loan Estimators (mortgage calculators, auto loans, interest comparisons)
- Lead Generation Calculators (gate results behind a name/email/phone capture form)
- Branded PDF or Email Quote Summaries
- Webhook & CRM Integrations (Zapier, Make, HubSpot, Google Sheets)
Compatible With Any Website Platform
- WordPress, Webflow, Shopify, Squarespace, Wix, and custom HTML/React websites.
Delivered with a clean, lightweight embed code or installed directly on your site.
How We Work Together
1. Contact me before ordering with your calculation rules and expected outputs.
2. I review technical feasibility, recommend the right package, and confirm the timeline.
3. I build the tool across different devices.
4. You receive the working tool with unlimited revisions.
Get to know Sifdin C
Sifdin C
Web Calculator and Excel to Web Developer
Level 2
- FromMorocco
- Member sinceFeb 2016
- Avg. response time1 hour
- Last deliveryabout 23 hours
Languages
English, French, German, Spanish
I turn spreadsheets and business formulas into interactive tools for your site.
With 12+ years of experience in web development, I build custom web calculators, instant quote and Excel-to-web applications that match your brand and work perfectly on desktop and mobile.
My focus is accurate formula logic, clean interfaces, and custom integrations (lead capture, dynamic charts, branded PDF reports, and webhooks).
Whether you need a calculator for your business or want to turn a complex Excel into a secure web tool, share your spreadsheet and let's build a solution your customers can rely on
My Portfolio
FAQ
What do you need before starting?
Please provide your website platform (WordPress, Webflow, Shopify, custom, etc.), your required input fields and formulas, and 2 or 3 sample calculations showing expected inputs and final results.
Can you install the calculator directly on my website?
Yes. I can provide a simple, clean embed code that works on any website, or I can directly integrate and test it inside your WordPress, Webflow, Shopify, Squarespace, or Wix site.
Can the calculator generate a downloadable PDF or send an email?
Yes. In the Standard and Premium packages, we can generate a branded PDF estimate for download or automatically send a summary email to both you and your customer.
Can this calculator capture leads before showing the calculation results?
Yes. In the Premium package, we can gate the final calculation behind a lead capture form (name, email, phone) and forward the lead data directly to your email, Google Sheets, or CRM via webhook.
Can you add dynamic charts or graphs?
Yes, dynamic interactive charts and visual graphs are included in the Premium package (or can be quoted as a custom extra for smaller tools).
What is included in a revision?
A revision covers adjustments to design styling, colors, field labels, or calculation adjustments within the agreed project scope. Adding brand-new calculation formulas, new steps, or additional third-party integrations not included in the original agreement is quoted separately.
What technology do you use?
I build calculators using clean, modern HTML, CSS, JavaScript, and lightweight frameworks. This guarantees zero bloat, fast load times, complete mobile responsiveness, and cross-browser compatibility.
Reviews
161 reviews for this Gig
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| (1) | ||
| (0) | ||
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| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
E 
eltaher80
Germany
Ongoing collaborationI had a great experience working with Sif. He is a highly skilled and reliable developer who quickly understood the requirements and delivered exactly what was needed. His communication was clear, he was responsive throughout the project, and he handled technical challenges professionally. What I particularly...
$50
Price
1 day
Duration
S 
Seller's Response
Helpful?E espenboger
Norway
Ongoing collaborationVery responsive to need for revisions and rapid delivery. We are happy to recommend and will probably come back for more at a later stage in our companys rapid growthphase.
$400-$600
Price
3 weeks
Duration
S Seller's Response
Helpful?W willo76
United Kingdom
Sidfin exceeded my expectations. He will be my first contact in future projects.
$100-$200
Price
6 days
Duration
S Seller's Response
Helpful?D debasd
Czech Republic
Spolupráci hodnotím velmi pozitivně. Vývojář dodržel termín a výsledek přesně odpovídá zadání. Komunikace: Byla rychlá a bezproblémová, vše jsme si jasně vysvětlili. Technické zpracování: HTML a JavaScript kalkulačka funguje perfektně a dělá přesně to, co má. Dodatečná pomoc: Velmi oceňuji, že mi...
$400-$600
Price
8 days
Duration
S Seller's Response
Helpful?W willbaldwin650
United Kingdom
Excellent understanding of our bespoke requirements. Looking forward to working together in the future.
$400-$600
Price
4 weeks
Duration
Helpful?
Reviews
161 reviews for this Gig
| (160) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
E eltaher80
Germany
Ongoing collaborationI had a great experience working with Sif. He is a highly skilled and reliable developer who quickly understood the requirements and delivered exactly what was needed. His communication was clear, he was responsive throughout the project, and he handled technical challenges professionally. What I particularly...
$50
Price
1 day
Duration
S Seller's Response
Helpful?E espenboger
Norway
Ongoing collaborationVery responsive to need for revisions and rapid delivery. We are happy to recommend and will probably come back for more at a later stage in our companys rapid growthphase.
$400-$600
Price
3 weeks
Duration
S Seller's Response
Helpful?W willo76
United Kingdom
Sidfin exceeded my expectations. He will be my first contact in future projects.
$100-$200
Price
6 days
Duration
S Seller's Response
Helpful?D debasd
Czech Republic
Spolupráci hodnotím velmi pozitivně. Vývojář dodržel termín a výsledek přesně odpovídá zadání. Komunikace: Byla rychlá a bezproblémová, vše jsme si jasně vysvětlili. Technické zpracování: HTML a JavaScript kalkulačka funguje perfektně a dělá přesně to, co má. Dodatečná pomoc: Velmi oceňuji, že mi...
$400-$600
Price
8 days
Duration
S Seller's Response
Helpful?W willbaldwin650
United Kingdom
Excellent understanding of our bespoke requirements. Looking forward to working together in the future.
$400-$600
Price
4 weeks
Duration
Helpful?
