Turn Your Excel Spreadsheets Into
Professional Web Applications
Send us your Excel file. Within 24 hours you'll get a free Conversion Blueprint — every formula mapped, recommended features, a fixed price, and a delivery timeline. No call required.
Our Simple 3-Step Process
From Excel file to live web application in as little as two weeks
Send Your Excel File
Share your .xlsx, .xls, Google Sheet, or complex spreadsheet with formulas and macros.
Get Your Conversion Blueprint
We analyze your file and deliver a complete Blueprint — formula map, recommended features, fixed price, and timeline — within 24 hours.
Receive Your Custom App
We build your custom web application with clean code, responsive design, and all your business logic.
From Complex Excel to Professional Web App
See how we transform unwieldy spreadsheets into sleek, user-friendly applications
- Formulas break when shared or edited
- No multi-user collaboration
- Manual data entry creates errors
- Not mobile-friendly or embeddable
- Automated calculations with validation
- Real-time team collaboration
- Role-based access control
- Mobile-responsive and embeddable
Play With the Kind of App We'd Build You
A real home affordability calculator we built — running entirely in your browser. Move the sliders and watch every number recalculate instantly.
Home Affordability Calculator
Adjust the inputs — results update instantly
Advanced options
- Principal & Interest
- $2,224
- Property Taxes
- $333
- Home Insurance
- $100
- HOA
- $0
- PMI
- $303
- Total PITI
- $2,960
Demo with sample assumptions — your Blueprint uses your real numbers.
This started life as an Excel spreadsheet. Yours can work like this too.
Get Your Free Conversion BlueprintOur Development Services
Specialized Excel-to-web conversion across multiple industries. Learn how the conversion process works →
Financial Calculators
Loan calculators, ROI tools, pricing models, amortization schedules, and investment analysis platforms.
Healthcare & Science Tools
Medical dosage calculators, admission scoring systems, research data tools, and clinical assessment platforms.
Business Process Apps
Workflow automation, assessment platforms, cost comparison tools, and multi-step business process applications.
Data Dashboards
Interactive analytics dashboards, KPI trackers, reporting tools, and data visualization platforms from Excel data.
WordPress Plugins
Convert Excel tools into WordPress plugins with shortcode support, seamless theme integration, and responsive design.
Custom Integrations & APIs
API development, third-party integrations, database connections, and automated data pipelines from Excel workflows.
Do You Even Need Us? Sometimes, No.
Tools like Noloco, Caspio, and ConvertCalculator are genuinely good for simple spreadsheets. Here's when each option makes sense:
Use a no-code tool when:
- Your spreadsheet is one sheet with basic formulas
- A standard template look is fine
- You're comfortable paying $30–100/month forever
- Your logic isn't a trade secret
Use custom development when:
- Multi-sheet workbooks with complex formula chains, macros, or lookups
- Your formulas are competitive IP that shouldn't run in the browser
- You want a custom interface that matches your brand exactly
- You'd rather pay once and own the code — no monthly fees, no per-user pricing, no platform lock-in
Not sure which you need? Send us the file — the free Blueprint will tell you honestly, even if the answer is "just use a no-code tool."
Get Your Free Conversion BlueprintReal Projects We've Delivered
Browse our portfolio of Excel-to-web conversions across industries
Home Affordability Calculator
Mortgage affordability tool with 15+ inputs, range sliders, debt-to-income analysis, and full PITI + PMI payment breakdown.
View Case Study
BaPsy University Admission Calculator
German university admission eligibility calculator evaluating Abitur scores across 16 states with conditional logic.
View Case Study
CBD Dosage Calculator
Health & wellness dosage tool with body weight-based calculations, condition-specific recommendations, and safety validation.
View Case Study
MUNI Bond Payment Calculator
Municipal financing calculator with slider-driven interface, multi-term comparisons, and monthly/quarterly breakdowns.
View Case Study
Rental Income ROI Calculator
Property investment analysis with dual frequency toggles, 12+ expense categories, and real-time profitability metrics.
View Case Study
Work From Home Tax Allowance Calculator
UK tax tool with conditional form logic, multi-year support, utility cost breakdowns, and PDF export for HMRC.
View Case Study
Motto Mortgage Pay Calculator
Branded compensation calculator comparing loan officer income at current rates vs Motto Mortgage 300 with slider controls.
View Case Study
UK Corp Tax Calculator
Comprehensive UK corporation tax calculator with personal vs company tax split, BIK calculations, and 15+ color-coded outputs.
View Case Study
Restraint Length Calculator
Pipe restraint calculator with technical diagrams, thrust force calculations, soil/trench selectors, and print functionality.
View Case Study
LEGEND Kit Vehicle Resale Calculator
Automotive resale value calculator with 3-year depreciation projection and 5% LEGEND Kit uplift in a premium dark theme.
View Case Study
Block Jocks NFT Drop Calculator
NFT revenue calculator with 4-tier pricing, ETH cryptocurrency selector, USD conversion, and grand total for investor presentations.
View Case Study
Cross Stitch Fabric Calculator
Cross stitch fabric calculator with thread count estimation, fabric sizing, and material cost breakdowns.
View Case Study
FIRE Tax Optimization Calculator
FIRE tax optimization calculator with Roth conversion laddering, capital gains harvesting, and withdrawal strategy analysis.
View Case Study
Trip Profit & Expense Tracker
Trip profit and expense tracker for transportation businesses with per-trip P&L, fuel cost analysis, and driver payouts.
View Case Study
Tax Deed Property Investment Analyzer
Tax deed property investment analyzer with ROI projections, auction price modeling, and rehab cost estimation.
View Case Study
Property Lettings CAC Calculator
Property lettings customer acquisition cost calculator with marketing spend analysis and tenant conversion tracking.
View Case Study
Business Loan Repayment Calculator
Business loan repayment calculator with amortization schedules, interest breakdowns, and early payoff scenarios.
View Case Study
LED Display Quote Management System
LED display quoting platform with interactive calculator, automatic PDF generation, tiered pricing, and admin dashboard.
View Case Study
Construction Cost Estimation Platform
Construction cost estimation platform with 4-step public wizard, 17 CSI divisions, admin rate management, and lead capture pipeline.
View Case Study
Resort P&L Financial Tracker
Resort P&L tracker with multi-department financial reporting, executive dashboard, interactive charts, and role-based access control.
View Case StudyFeatured Case Studies
Deep dives into three of our most impressive Excel-to-web conversions
Home Affordability Calculator
Converted a detailed mortgage affordability Excel spreadsheet into a web app with 15+ input fields, range sliders, and real-time PITI + PMI payment breakdowns.
Restraint Length Calculator
Converted a pipe restraint sizing Excel workbook into a web app with technical diagrams, thrust force calculations, soil/trench selectors, and print functionality.
Block Jocks NFT Drop Calculator
Built an NFT revenue projection tool with 4-tier pricing, ETH cryptocurrency selector, USD conversion, and grand total for investor presentations.
LED Display Quote Management System
Converted an LED display quoting Excel workbook into a web app with interactive calculator, automatic PDF quotes, tiered pricing, and admin dashboard.
Learn Before You Convert
Practical guides on converting Excel to a web application — costs, technical details, and when it makes sense
Convert Excel VBA to a Web App
How VBA macros become JavaScript — what converts cleanly and what needs a redesign.
Read the guideExcel vs Web App: Full Comparison
Cost, security, multi-user access, and mobile — compared side by side.
Read the guideEmbed an Excel Calculator on Your Website
Three ways to put your calculator online, compared on cost and lead capture.
Read the guideExcel Formulas to JavaScript
How VLOOKUP, SUMIFS, and nested IFs translate to code with identical results.
Read the guideThe Hidden Costs of Complex Spreadsheets
What your "free" Excel tool actually costs in errors, versions, and lost time.
Read the guideTurn Your Spreadsheet into a SaaS Product
From private Excel tool to revenue-generating web app — validation to launch.
Read the guideWhat Our Clients Say
Trusted by businesses across industries to deliver quality web applications
"They took our complex financial Excel model with hundreds of formulas and turned it into a beautiful, easy-to-use web application. The accuracy is spot-on and our clients love it."
"We needed a WordPress plugin version of our scoring calculator. They delivered exactly what we needed — it integrates perfectly with our site and our users find it incredibly intuitive."
"Our multi-day yield tracking spreadsheet was getting impossible to manage. The web app they built streamlined everything — now our whole team uses it daily in the field on their phones."
Built by a Developer Who Started in Accounting
I'm Farooq Ahmed, the founder of ExcelToWeb.app. Before I wrote code, I worked in accounting — which means I don't just rebuild your spreadsheet, I understand the business logic inside it. Since 2019 I've converted 600+ Excel files into web applications for clients in finance, construction, healthcare, and engineering. Every project: custom code, formula-for-formula accuracy, delivered on a fixed quote.
Frequently Asked Questions
Everything you need to know about our Excel-to-web conversion service. See all FAQs →
We can convert virtually any Excel file — from simple calculators to complex multi-sheet workbooks with advanced formulas, VBA macros, pivot tables, and conditional logic. Common types include financial calculators, pricing tools, scoring systems, data trackers, and business process workflows. We support .xlsx, .xls, .xlsm, and Google Sheets.
Most projects are completed in 2-4 weeks. Simple calculators may take 1-2 weeks, while complex multi-sheet workbooks with extensive business logic can take 4-6 weeks. You'll receive a detailed timeline with your quote within 24 hours of submitting your Excel file.
Pricing depends on complexity. Simple calculators typically range from $500–$1,500, mid-complexity tools from $1,500–$3,000, and enterprise-grade applications from $3,000–$5,000+. Every quote is custom — send us your Excel file for a free, no-obligation Conversion Blueprint within 24 hours.
Yes. We meticulously recreate all formulas, conditional logic, VLOOKUP/INDEX-MATCH functions, and calculation chains in clean web code. We test every calculation path against your original Excel file to ensure 100% accuracy before delivery.
Absolutely. We specialize in converting Excel tools into WordPress plugins with shortcode support, so you can embed your calculator or tool directly into any WordPress page. The plugin integrates seamlessly with your existing theme and is fully responsive.
We use modern, production-ready technologies: HTML5, CSS3, JavaScript (vanilla or React/Vue depending on complexity), with PHP or Node.js backends when needed. For WordPress plugins, we use standard WordPress plugin architecture. All code is clean, well-documented, and maintainable.
We can help you deploy your application to your preferred hosting provider, or recommend affordable hosting solutions. For WordPress plugins, they run on your existing WordPress hosting. We also offer optional ongoing maintenance and support packages.
Yes — multi-sheet workbooks are one of our specialties. We've converted workbooks with 10+ interconnected sheets, cross-sheet references, named ranges, and complex data validation rules into unified web applications with intuitive multi-step interfaces.
Get Your Free Conversion Blueprint
Tell us about your Excel file — or just upload it — and we'll send a complete conversion analysis within 24 hours.
Let's Talk About Your Project
Share your Excel file and requirements, and we'll respond with a detailed proposal — no obligation, no pressure.
Prefer to talk first?
Book a free 30-minute callReady to Transform Your Excel?
Stop struggling with complex spreadsheets. Get a professional web application built to your exact specifications.