10 free Vietnamese lunar & feng-shui calculators
Lunar/solar converter, Can Chi, auspicious days, anniversary, feng-shui — run instantly in your browser. No signup.
This page collects 10 free tools for Vietnamese families: lunar/solar date conversion, auspicious day picker, Can Chi sexagenary cycle, spouse and parent–child compatibility, 2026 Bính Ngọ zodiac outlook, anniversary (giỗ) calculator, feng-shui age check (Kim Lâu / Hoang Ốc / Tam Tai), auspicious hours and a Tết countdown. Everything runs in your browser — no signup, no stored data, no ads.
The lunar engine uses the canonical Hồ Ngọc Đức algorithm — the official Vietnamese standard (UTC+7), verified for years 1900 to 2100 with full leap-month support. Feng-shui tools follow Vietnamese folk tradition and are for reference only.
Lunar / Solar converter 2026
Two-way Vietnamese lunar ↔ solar date conversion with Can Chi, auspicious days, leap month. 1900–2100.
Keywords: lunar calendar, conversion, can chi
Auspicious day picker
Hoàng Đạo / Hắc Đạo, day stars, recommended vs avoided activities — weddings, openings, groundbreaking.
Keywords: auspicious day, hoang dao, wedding
Sexagenary cycle calculator
Enter solar birth year → Vietnamese Can Chi (Giáp Tý, Bính Dần…), Five Elements, lunar age, real age.
Keywords: sexagenary cycle, can chi, five element
Parent–child compatibility
Can Chi for 3 people — Tam Hợp, Lục Hợp, Tứ Hành Xung. For families planning a child in 2026, 2027.
Keywords: compatibility, parent child, tam hop
Auspicious hours today
12 Thời Thần (Tý → Hợi) marked lucky/unlucky for ceremonies, departures, contract signing.
Keywords: lucky hours, thoi than
Spouse compatibility 2026
Can Chi + Five Elements + Tam Hợp / Lục Hợp / Tứ Hành Xung. Reference for wedding planning.
Keywords: wedding, spouse, compatibility
2026 outlook (Bính Ngọ)
Year of the Fire Horse for all 12 Vietnamese zodiacs — wealth, career, love, health.
Keywords: zodiac 2026, tu vi, fire horse
Anniversary (giỗ) calculator
From a passing date — get 49 days, 100 days, first anniversary (tiểu tường), annual giỗ for 5 years.
Keywords: anniversary, 49 days, gio
Feng-shui building age 2026
3 factors: Kim Lâu, Hoang Ốc, Tam Tai. Includes mượn tuổi workaround if conflicts arise.
Keywords: feng shui, kim lau, tam tai
Tết Đinh Mùi 2027 countdown
Live days / hours / minutes to Vietnamese Lunar New Year 2027 + next 5 Tết dates.
Keywords: tet countdown 2027, lunar new year
Frequently asked questions
Are these tools free?
100% free, no signup, no ads. You can share results via the URL (deep-link).
How accurate are the calculations?
The lunar engine uses the canonical Hồ Ngọc Đức algorithm (Vietnam UTC+7), verified for 1900–2100. Feng-shui tools (Kim Lâu, Hoang Ốc, Tam Tai, Hoàng Đạo) follow Vietnamese folk tradition and are for reference only.
How does this differ from the ForLife app?
These web tools are one-off calculators. The ForLife app auto-reminds anniversaries (lunar) and birthdays every year, stores a 5–7 generation family tree, and lets relatives contribute privately. Core features are free.
Do the tools work offline?
Once the page loads, the tools run entirely in your browser and keep working offline. The full ForLife app (iOS / Android / Web) is offline-first and syncs when connected.
Is my data stored on a server?
No. All web tools compute in your browser and send no data anywhere. ForLife only stores your data after you create an account, governed by a clear privacy policy.
All these tools — plus automatic reminders
The ForLife app reminds you of ancestral anniversaries and family birthdays on the lunar calendar automatically every year, and stores a 5–7 generation family tree. Core features are free.
Try ForLife free →