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💼 Workday Calculator

Local workday calculator: 5-market statutory holidays (CN/US/UK-EW/UK-SCT/UK-NIR/HK/JP, 2023-2027) + State Council 调休 / EO 11582 observed rule + custom holidays + 3 modes (count between dates / add-subtract / classify single day) + Excel NETWORKDAYS.INTL / WORKDAY.INTL compatibility + 17 weekend codes + 14-day calendar strip + fail-closed URL share. Mobile 44px touch-first. No login, default no ad scripts, default no third-party analytics.

Local computation · bundled holiday data · no login
Weekend (Mon→Sun, checked = off)
Excel code: 1 String: 0000011
Custom holidays (optional, local-only, content NOT shared)

Calendar strip (±7 days around result)

Workday Weekend Public holiday Makeup workday Result

Excel equivalent formula

String argument uses Mon-first 7-bit mask (1 = non-workday), matching Excel NETWORKDAYS.INTL third-param convention.

Reference only. For actual labor-law, payroll, contractual, or statutory-holiday enforcement, consult official announcements or your employer HR / legal counsel. This tool stores no input data and makes no warranty for legal, tax, or financial use.

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Workday Calculator: Browser-local computation across 5 markets (China incl. State Council makeup/调休 days, US incl. EO 11582 observed-rule shifts, UK split into England&Wales / Scotland / Northern Ireland, Hong Kong, Japan) with authoritative 2023–2027 statutory holiday data. Three operation modes (count workdays between dates, add/subtract N workdays from a date, classify date kind) fully compatible with Excel NETWORKDAYS.INTL / WORKDAY.INTL semantics. Supports all 17 Excel weekend codes plus 7-character custom mask (Sat+Sun default, Sun only, Fri+Sat for Saudi/Israel, Thu+Fri for Iran, Sat only for Nepal). Custom company-holiday manager with CSV-style paste, 14-day calendar strip visualization, shareable URL permalink with fail-closed validator, one-click Excel formula copy, mobile 44px touch-first UI. No login, default no ad scripts, default no third-party analytics — uses bundled data after the page loads.