Web Calculators from Spreadsheets

Turn formulas into production APIs

Upload your pricing or financial model and get an API to power calculators on your site or app—no custom backend required.

How to Build a Spreadsheet-Powered Calculator

Launch a working calculator in three steps

01

Upload Logic

Put your pricing, scoring, or financial models into a spreadsheet.

pricing_model.xlsx
APR
Term (mo)
Amount
Payment
6.5%
36
$15,000
=PMT(A2,B2,C2)
5.9%
48
$22,000
=PMT(A3,B3,C3)
4.2%
60
$30,000
=PMT(A4,B4,C4)
Formulas live in your sheet — no backend porting.
02

Configure Inputs

Declare input fields, validation rules, and output mappings via API settings.

Input schema
apr
number 0–50%
validated
term_months
int 1–120
validated
amount
currency ≥ 0
validated
Strict validation + helpful errors for bad inputs.
03

Connect Front-End

Call the API from your website or app to render instant results.

Live result
POST /calculate
apr
5.9%
term_months
48
amount
$22,000
$514.33 / month
Render instantly on your site/app.

Business Outcomes You Can Measure

Faster builds, lower costs, and better conversions

90%

Development Speed

Turn complex spreadsheets into production calculators quickly.

60%

Cost Reduction

Cut backend boilerplate and maintenance with a managed API layer.

3x

Conversion Lift

Interactive tools drive engagement and higher qualified leads.

Frequently Asked Questions

Ready to Transform Your Workflow?

Get started today and see how this use case can revolutionize your business processes.