Calendar mileage

Outlook Calendar to Mileage

If you use Outlook Calendar for your appointments, MileageCalendar can read each event’s location and calculate the driving distance between consecutive appointments — building a mileage log with the date, reason and postcodes HMRC expects. Try the calculator below to see how a single journey is calculated.

Last reviewed 20 August 2026

Connecting Outlook Calendar

MileageCalendar connects to your Outlook Calendar with a secure, read-only authorisation. It reads the title and location of each appointment and uses them to build draft mileage records.

For each pair of consecutive appointments with locations, it calculates the road distance and creates a record with the appointment title as the business reason and the two postcodes as the start and end.

What each record contains

  • Date and time of the journey
  • The appointment title as the business reason
  • Start and end postcodes
  • The calculated road distance
  • The HMRC claim value

Worked example

Every appointment with a location becomes a candidate mileage record — you just review and confirm.

From the office to a client meeting

Appointment 1Team standup — RG1 1EU
Appointment 2Client meeting — RG12 1FL
Distance7.2 miles
Claim @ 55p£3.96

Calculate your mileage

Start postcode → add stops → destination → calculate. Free, no sign-up.

✨ Try it now

Quick Mileage Calculator

Enter two locations to instantly calculate your driving distance and mileage allowance. Free — no sign-up required.

From
To
Journey Date

IRS official rate of $0.76 per mile, applied to every mile of this journey.

Total Distance

0.0miles

Mileage Amount

$0.00

Journey Stops

0 stops

Estimated Time

0 min

Tip: add multiple stops to calculate the total distance and allowance for your whole journey.

Frequently Asked Questions

Authoritative sources

See related guides for HMRC source references.