Converting units

Each time unit has a converter. Call it with an amount to get milliseconds:

minutes(2) + seconds(30);
// => 150_000

hours(1.5);
// => 5_400_000

weeks(2);
// => 1_209_600_000

const expiresAt = Date.now() + days(30);

Amounts can be fractional or negative, and converters can be added together for compound durations.

Converting back

Every converter has a .from() method that turns milliseconds back into that unit:

minutes.from(150_000);
// => 2.5

hours.from(5_400_000);
// => 1.5

days.from(weeks(1));
// => 7

Combine a converter and .from() to convert between any two units.

Units

Converter	One unit in milliseconds
weeks	604_800_000
days	86_400_000
hours	3_600_000
minutes	60_000
seconds	1_000
milliseconds	1
microseconds	0.001
nanoseconds	0.000_001

Sub-millisecond units produce fractions of a millisecond:

microseconds(1);
// => 0.001

nanoseconds(500);
// => 0.0005

milliseconds returns its input unchanged. See why it exists.