無料のファンタジー/D&Dカレンダー生成ツール。カスタム年を定義し、実世界の期間を架空の日付に変換します。
Use whenever you need to "jump ahead" in your worldbuilt timeline. Particularly handy when characters travel for weeks and you need to know what day it is when they arrive.
Tools like Fantasy Calendar and Realm Manager have richer features but require accounts. This is a zero-login quick converter.
You define the world's "rules of time" — months, days per month, days per week — and the calendar generator builds a printable grid for any month.
The converter takes a starting day-of-year and a number of days to add, then computes the target month, day, weekday, and how many years have advanced.
No login or sync — your custom calendar is saved in your browser only.
The current build computes simple year cycles. For leap rules, add the extra day(s) to your year length manually.
Your calendar settings are saved in your browser locally. Sharing across devices isn't supported yet.
Fictional worlds often use weeks of five, eight, or ten days to feel distinct from Earth's. The generator lets you set the week length so the printable grid wraps correctly and weekday names line up with your lore.
Enter your campaign's starting fictional date and the number of real days elapsed, and the tool adds them across your custom month and leap-year rules. This keeps in-world dates accurate even when your months differ in length from real ones.
入力
10 months × 40 days = 400 day year. 8-day week. Story day 1, add 142 days.
出力
Month 4, day 22 — weekday 6.
Day 1 + 142 days = day 143. With 40-day months, that's month 4 (days 121–160) and day 23 — minus 1 because day 121 is month 4's day 1.