Deadline & Working Days — Due in 10 working days — what date is that?

Thirty working days from today is nearly six and a half weeks away once weekends and public holidays come out. This counts it properly — including the day-one rule that contracts actually mean and everybody gets wrong.

WHAT YOU GET

- Count forward to a deadline, or count the working days between two dates

- US federal holidays and UK bank holidays, worked out from the law, not a hard-coded list

- Handles the ones that move — including Christmas cascading into two substitute days

- The 'does day one count?' tick box, so you can show your working in an argument

- A calendar of the whole run, and a list of every holiday it took out

HOW IT WORKS

1. Say what you need — A start date and a number of days, or two dates to measure between.

2. Set your working week — Mon–Fri, Tue–Sat, seven days — plus your own days off.

3. Read the deadline — With every weekend and holiday it skipped, shown on a calendar.

One file. Double-click it and it opens in the browser you already have — Chrome, Edge, Safari or Firefox. Nothing to install, no account, no subscription.

Nothing you type ever leaves your computer. There is no server involved, which is why it still works with the wi-fi switched off.

30-day refund, no questions asked.