ILR Absence Calculator: 180 Days in Any 12 Months

Tap the day you left the UK and the day you came back for each trip. The tracker shows your days abroad in the 12 months up to any date, planned trips included.

Last verified: October 2026

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Keep counting as you travel. Free app for iPhone and iPad.

1. Make sure AtlasDays is installed on your iPhone or iPadFree on the App Store.
2. Scan the QR code to load all trips into AtlasDaysCheck them, then tap Import.

1. Get AtlasDaysFree on the App Store. Already have it? Skip to 2.App Store
2. Open your stays in the appCheck them, then tap Import. Nothing is saved before that.Open in AtlasDays

1. Get AtlasDaysFree on the App Store for iPhone.App Store
2. Import your stays with a fileThat is more stays than a link can carry. Download the file and open it on your iPhone with AtlasDays.Download file

Download trips as a CSV file

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Everything stays in your browser: nothing you enter is sent or saved.

How the calculator counts

• Whole days only. The day you leave and the day you come back are not days abroad, so a trip from 1 June to 10 June is eight days away (2 to 9 June), and a trip of less than 24 hours adds nothing.
• The 12 months up to one date. The tracker counts your days abroad in the 12 months up to the date you count up to, today unless you pick another. Planning a trip? Count up to the day you come back.
• Calendar months, not 365-day blocks. A window running to 9 January 2027 starts on 10 January 2026, leap days included.

When other rules apply

The calculator applies the current 180-day limit to the dates you enter. A few situations follow their own rules, and the ILR guide explains them:

• Your qualifying period. Only absences inside it count. Mark the trips from the years you are applying on, not older ones.
• Permission granted before 11 January 2018. Absences in that period are tested in consecutive 12-month periods ending on your application date's anniversary, not on a rolling basis.
• Long Residence absences before 11 April 2024. The old limits of 548 days in total and 184 days for a single absence still apply to them.
• Permitted absences. Some absences for serious illness, travel disruption or crisis work can be disregarded. The calculator counts every day you mark.
• The rest of your application. Lawful residence, English and Life in the UK, and suitability are separate requirements.

The rule itself, including which date the 12 months count back from, is explained in UK ILR Absence Rule: 180 Days in Any 12 Months. Citizenship has different limits: see UK Citizenship: The 450-Day and 90-Day Absence Limits.

Keep the count running, not just once

A calculator checks the trips you remember today. The UK Indefinite Leave to Remain preset in AtlasDays keeps counting as you travel, privately on your iPhone, and warns you before a trip would take you over 180 days.

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FAQ

Is the calculator's answer final?

No. It applies the headline limit to the dates you enter. Older permission, Long Residence history, permitted absences and your qualifying period can change the outcome, and the decision is the Home Office's.

Why does a two-week holiday show fewer than 14 days?

Because only whole days abroad count. The day you leave and the day you come back are not absence days, so a trip from 1 June to 15 June is 13 days.

Is my data stored?

No. The calculator runs in your browser and does not send, log or save the dates you enter. Closing or reloading the page clears them. To keep them, tap Track this in AtlasDays.

About this article: AtlasDays provides general information, not legal, tax, or immigration advice. Rules change and outcomes depend on your circumstances, so never rely on it alone: check the linked official source or ask a qualified professional.