Software calculators

Sci-fi calculators

Gregorian calendar vs. metric time

Gregorian calendar Metric time
15 min. 900 sec.
1h 3600 sec.
1 day 86400 sec.
1 week 604800 sec.
1 month 2592000 sec.
1 year 31536000 sec.
31.71 years 1 billion seconds

Various calculators

More calculators