時間 コンバーター

Convert SI time units, calendar approximations and historically used time measures. ライブ変換ツールで数値を入力し、このカテゴリで対応する任意の単位ペアを選択できます。

対応単位 (26)

Each row links to the live converter. The factor column uses the family’s stated base unit for linear families; for specialized reciprocal or numeral systems, use the live converter and the family-specific explanation.

変換元の単位基準単位への係数Tool
nanosecond
ns
1e-09Convert this unit ↗
microsecond
µs
1e-06Convert this unit ↗
millisecond
ms
0.001Convert this unit ↗
second
s
1Convert this unit ↗
minute
min
60Convert this unit ↗
hour
h
3600Convert this unit ↗
day
day
86400Convert this unit ↗
week
week
604800Convert this unit ↗
fortnight
fortnight
1209600Convert this unit ↗
30-day month
month-30
2592000Convert this unit ↗
365-day year
year-365
31536000Convert this unit ↗
picosecond
ps
1e-12Convert this unit ↗
femtosecond
fs
1e-15Convert this unit ↗
kilosecond
ks
1000Convert this unit ↗
megasecond
Ms
1000000Convert this unit ↗
Julian year
year-julian
31557600Convert this unit ↗
Gregorian mean year
year-gregorian
31556952Convert this unit ↗
average Gregorian month
month-avg
2629746Convert this unit ↗
quarter-year (3 mean months)
quarter
7889238Convert this unit ↗
decade
decade
315569520Convert this unit ↗
century (100 mean years)
century
3155695200Convert this unit ↗
millennium
millennium
3.1556952e+10Convert this unit ↗
sidereal day
sidereal-day
86164.0905Convert this unit ↗
sidereal year
sidereal-year
31558149.76Convert this unit ↗
shake
shake
1e-08Convert this unit ↗
jiffy (light travels one centimeter)
jiffy-physics
3.335640952e-11Convert this unit ↗

重要な注意

Unit standards, historical definitions and approximations can vary. Cooking volume-to-mass conversions depend on the ingredient; currencies require an exchange rate; sizing systems may be discrete; and logarithmic quantities such as decibels need purpose-built formulas rather than a linear scale.

For laboratory, medical, aviation, engineering or other safety-critical work, verify the definitions and standards that apply to your use case.