# sutoiku/formula.js

JavaScript implementation of most Microsoft Excel formula functions

Repository: https://github.com/sutoiku/formula.js
Canonical: https://ross.abutalabs.com/products/formulajs
Language: JavaScript
License: NOASSERTION
License Family: other
Last push: 2020-03-16T12:27:05+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4985, "days_push": 2361, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2155, forks 292 (observed 2026-08-28T04:06:19.555500+00:00)

## What it is
A JavaScript library implementing most Microsoft Excel formula functions for use in browsers and Node.js. This repository is deprecated; development continues at formulajs/formulajs.

## Use cases
- evaluate excel formulas in javascript
- implement spreadsheet functions in a web app
- calculate SUM, AVERAGE, VLOOKUP in node
- port excel calculations to a web application
- reuse excel formula logic in javascript

## When to choose
- you need Excel-compatible formula functions in JavaScript
- you are building spreadsheet-like features in a web app

## When to avoid
- you need a maintained project - use formulajs/formulajs instead
- you need a full spreadsheet engine or parser

## Facets
- artifact type: library
- maturity: abandoned
- function: math, data-science
- domain: spreadsheets, developer-tools
- platform: browser
- tags: excel-formulas, spreadsheet-functions, deprecated, nodejs, javascript

## Member repositories
- sutoiku/formula.js (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:19.555500+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:50:36.918666+00:00, confidence not recorded.
  - readme: https://github.com/sutoiku/formula.js (fetched 2026-08-28T04:06:19.555500+00:00, sha 0ccddb74d5f4)
- Data as of 2026-08-30T08:39:29.467469+00:00.