How much data do I need for my trip?
Answer a few quick questions and see your estimate instantly — honest advice, including when the answer is less than you think.
Work it out in half a minute
How long is the trip, and what will you actually do on it?
Your estimate
0.6 GB
About 75 MB a day over 7 days, with a 15% safety margin so you don’t run dry on the last day.
The 5 GB plan fits. Available on the Ireland & UK plan.
Pick your destination →What apps actually use
The numbers behind the calculator. Messaging and maps barely register — video is where gigabytes go.
WhatsApp — messages & voice
- Usage
- ±1 MB per hour
- In practice
- Negligible — a few MB per day
Google Maps navigation
- Usage
- 30–50 MB per hour
- In practice
- City trip ±40 MB/day, road trip ±120 MB/day
Instagram & TikTok
- Usage
- 500 MB – 1 GB per hour
- In practice
- Usually the biggest drain when travelling
YouTube & Netflix
- Usage
- 1–3 GB per hour
- In practice
- ±1 GB in SD, ±3 GB in HD — save for Wi-Fi
Spotify & podcasts
- Usage
- ±60 MB per hour
- In practice
- Downloading on Wi-Fi saves almost all of it
Video calls — FaceTime, WhatsApp
- Usage
- ±500 MB per hour
- In practice
- A short daily call home ≈ 400 MB/day
Email & browsing
- Usage
- ±25 MB per hour
- In practice
- 50–100 MB per day with normal use
You’ll likely use more abroad than at home
On the road you’re on Wi-Fi less, you navigate more, and you share more photos and video. That’s why the calculator adds a 15% margin — and why “the phone stays in my pocket on holiday” rarely survives contact with an unfamiliar city.