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You will get Custom Browser Calculator — One HTML File, No Server Needed

Andrii Z.Status: Offline
Andrii Z.
Preview image

Let a pro handle the details

Buy Web Application Programming services from Andrii, priced and ready to go.
Andrii Z.Status: Offline
Andrii Z.
Preview image

Let a pro handle the details

Buy Web Application Programming services from Andrii, priced and ready to go.

Project details

A custom single-page calculator delivered as one HTML file you fully own. Open it with a double-click, embed it on your website, host it on S3, or email it - it just works. No server bill, no SaaS subscription, no dependencies that break a year from now.
What you get:
 • One HTML file, mobile-responsive, branded with your colors and logo
 • Up to 8 input fields and 1-4 result outputs
 • Live calculation as the user types
 • Full source code, commented, yours to keep
 • Written spec so you (or anyone) can read how it works
 • 1 round of revisions

Good for: mortgage payment, ROI, savings projections, tax estimator, quote calculator, dosage, BMR, custom business formula - anything you can describe with inputs and a formula.
Programming Languages
HTML & CSS, JavaScript, Python
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Design

What's included $200

These options are included with the project scope.

$200
  • Delivery Time 3 days
  • Number of Revisions 1
  • Number of Pages 1
    • Design Customization
    • Responsive Design
    • Source Code
Optional add-ons You can add these on the next page.
Additional Revision
+$25

Frequently asked questions

Andrii Z.Status: Offline

About Andrii

Andrii Z.Status: Offline
I turn documents and data into searchable HTML references
Tallinn, Estonia - 8:18 am local time
I turn long PDFs, regulations, spreadsheets, and scattered source material into a single HTML reference your team can search, filter, and navigate in seconds - instead of scrolling through hundreds of pages. Every item links back to its source, so the result is easy to check and easy to trust.
How it works: you send the raw material, I map out the structure in writing, and you approve it before I build anything. You own the result fully - a self-contained file that opens in any browser, with no backend and no subscription.
This fits dense manuals, regulations, and standards; scattered material that needs to live in one place; and spreadsheets or exports that are hard to read. Small jobs are welcome - a single document is enough to start.

Steps for completing your project

After purchasing the project, send requirements so Andrii can start the project.

Delivery time starts when Andrii receives requirements from you.

Andrii works on your project following the steps below.

Revisions may occur after the delivery date.

I write a short specification

inputs, calculation logic, edge cases, layout, and what the output looks like. You review and approve before any code is written.

I build the HTML file

and send it to you for review. Open it with a double-click on any computer to test.

Review the work, release payment, and leave feedback to Andrii.