What does the Random Date Generator work out?

Draw a random date inside any range. It is one of the Randomizers & Pickers tools on Mondo Knows.

How is the Random Date Generator calculated?

Fill test data with plausible dates, or pick a surprise day for a trip. Every calendar day between your two dates has the same chance, so the range can be a week or a century. The maths is short enough to check by hand: Day offset = a uniformly random whole number from 0 to the number of days between the two dates.

Do I need to sign up, and is my data stored?

No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo Knows Tools

Random Date Generator

Draw a random date inside any range. Use the free random date generator below to get an instant answer, with the formula shown so you can check the maths and trust the result. Free, private, and no sign-up.

From

How many dates

Mondo says

Fill in the fields, then press Draw dates.

How it works

Fill test data with plausible dates, or pick a surprise day for a trip. Every calendar day between your two dates has the same chance, so the range can be a week or a century.

The formula

Day offset = a uniformly random whole number from 0 to the number of days between the two dates.

Random Date Generator: common questions

What does the Random Date Generator work out?: Draw a random date inside any range. It is one of the Randomizers & Pickers tools on Mondo Knows.
How is the Random Date Generator calculated?: Fill test data with plausible dates, or pick a surprise day for a trip. Every calendar day between your two dates has the same chance, so the range can be a week or a century. The maths is short enough to check by hand: Day offset = a uniformly random whole number from 0 to the number of days between the two dates.
Do I need to sign up, and is my data stored?: No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo also knows

Random Month GeneratorPick a random month, with or without a year.🎲 Randomizers & Pickers Date CalculatorAdd or subtract days, weeks, months and years from a date.🧭 Everyday & Tech Day CounterDays between two dates, in every unit that matters.🧭 Everyday & Tech Random Letter GeneratorDraw random letters for word games and classrooms.🎲 Randomizers & Pickers

Estimates for general guidance only. This is not financial, medical or legal advice. Everything runs in your browser and nothing you type is stored.