Convert dates by the row. Turns each Gregorian date into Long Count, Tzolkin and Haab — Google Sheets or Excel.
It's one of 250+ live sources you reach with a single =VERVE() function — served from APIVerve's production data engine, billed at 1 credit per resolved cell, and refreshed on whatever cadence you set. No API keys to wrangle, no scripts, no exports.
A real example — the input you type, and the values you can pull from it. Click any cell to see the formula behind it.
Fill =VERVE("mayancalendar", "2024-12-21", "field", "gregorian") beside your keys and pull the reference value for each into its own cell — one trusted lookup per row.
Replace hand-maintained lookup tables with a live one so your reference values never drift out of date.
Use Mayan Calendar's output as a lookup column your other formulas can VLOOKUP or reference directly.
The same function works in both apps — install once, sign in with your key, and type it into any cell.
Install from the Workspace Marketplace, then drop the formula into a cell. Autocomplete suggests the source and its fields.
=VERVE("mayancalendar", "2024-12-21", "field", "gregorian")Same source, same arguments, same key — in Excel on desktop, the web, or mobile. Excel namespaces it as VERVE.CALL. Drag to fill a whole column.
=VERVE.CALL("mayancalendar", "2024-12-21", "field", "gregorian")Add a field name as the last argument to land just that value in the cell.
=VERVE("mayancalendar", "2024-12-21", "field", "gregorian")=VERVE("mayancalendar", "2024-12-21", "field", "longCount.formatted")=VERVE("mayancalendar", "2024-12-21", "field", "longCount.baktun")=VERVE("mayancalendar", "2024-12-21", "field", "longCount.katun")=VERVE("mayancalendar", "2024-12-21", "field", "longCount.tun")=VERVE("mayancalendar", "2024-12-21", "field", "longCount.winal")=VERVE("mayancalendar", "2024-12-21", "field", "longCount.kin")=VERVE("mayancalendar", "2024-12-21", "field", "tzolkin.number")=VERVE("mayancalendar", "2024-12-21", "field", "tzolkin.dayName")=VERVE("mayancalendar", "2024-12-21", "field", "tzolkin.formatted")=VERVE("mayancalendar", "2024-12-21", "field", "haab.day")=VERVE("mayancalendar", "2024-12-21", "field", "haab.monthName")Premium marks data included on paid plans. On the Free plan a marked field is withheld and a marked input is ignored — either way the cell reads #PREMIUM(name) instead of a value, so a gated answer can never be mistaken for a real one. Everything unmarked works on every plan. Compare plans
Everything you need to wire it into a sheet.