London Underground Fare Calculator
Estimate your Tube journey costs with our simple and accurate tool.
Select the zone where your journey begins.
Select the zone where your journey ends.
Fares are higher during peak hours.
Using Oyster or a contactless card is significantly cheaper than cash.
What is a London Underground Fare Calculator?
A fare calculator for the London Underground is a tool designed to demystify the complex pricing structure of London’s Tube network. Instead of manually cross-referencing zone maps and fare tables, this calculator instantly provides an estimated cost for a single journey. Users input their starting and ending zones, the time of day, and payment method to get a precise fare. This is essential for both tourists and residents to budget their travel and make cost-effective choices, such as traveling off-peak or using contactless payment over cash.
London Underground Fare Formula and Explanation
There isn’t a single mathematical formula for Tube fares. The cost is determined by a lookup system based on several key variables. Our fare calculator for the London Underground simulates this system.
The basic logic is:
Fare = FareMatrix[StartZone][EndZone][TimeOfDay] * PaymentMultiplier
The system checks a pre-defined table of prices (a fare matrix) based on the zones you travel through and whether it’s peak or off-peak time. A different, much higher price is charged if you pay by cash.
| Variable | Meaning | Unit / Type | Typical Range |
|---|---|---|---|
| Start/End Zone | The TfL travel zones your journey starts and ends in. | Integer | 1-9 |
| Time of Day | Determines if peak or off-peak fare applies. | Enum (Peak/Off-Peak) | Peak is weekday mornings/evenings. |
| Payment Method | The way you pay (Oyster, Contactless, or Cash). | Enum | Contactless is cheapest, Cash is most expensive. |
For more detailed information on TfL’s pricing, see their Official TfL Fare Guide.
Practical Examples
Here are two common scenarios calculated using our fare calculator for the London Underground.
Example 1: Commuter Journey
- Inputs: Start Zone 4, End Zone 1, Peak Time, Oyster/Contactless.
- Calculation: The calculator identifies this as a 4-zone journey during the most expensive time. It looks up the peak fare for a Zone 1-4 journey.
- Result: The estimated fare is £4.30. The saving compared to a £6.70 cash ticket is significant.
Example 2: Weekend Tourist Trip
- Inputs: Start Zone 1, End Zone 2, Off-Peak Time, Oyster/Contactless.
- Calculation: This is an off-peak journey between two central zones. The system applies the cheaper off-peak rate.
- Result: The estimated fare is £2.70. This demonstrates the benefit of traveling outside of weekday rush hours. A great tip for anyone exploring top London attractions.
How to Use This London Underground Fare Calculator
- Select Your Start Zone: Choose the numbered zone where you will begin your journey from the first dropdown menu.
- Select Your End Zone: Choose the zone of your final destination.
- Choose Your Travel Time: Select ‘Peak’ if traveling between 06:30-09:30 or 16:00-19:00 on a weekday. Otherwise, select ‘Off-Peak’.
- Set Your Payment Method: Select ‘Oyster / Contactless’ for the standard, cheaper fare. Select ‘Cash’ if you plan to buy a paper ticket.
- Click ‘Calculate Fare’: The tool will instantly display your estimated single journey fare and other useful details.
The result shows not just the price but also your savings compared to paying with cash, helping you understand the value of using the recommended payment methods.
Key Factors That Affect Tube Fares
- Number of Zones Crossed: The primary factor. The more zones your journey covers, the higher the fare.
- Time of Day (Peak vs. Off-Peak): Traveling during weekday rush hours (peak times) is more expensive than at any other time.
- Traveling Through Zone 1: Journeys that start, end, or pass through Zone 1 are typically more expensive than journeys of a similar length in outer zones. Our guide to navigating the Tube map can help you plan routes.
- Payment Method: Paying with an Oyster card or a contactless bank card is always substantially cheaper than buying a cash ticket for the same journey.
- Daily and Weekly Capping: TfL applies a “cap” on Oyster/Contactless payments. Once your total fares in a day or week (Mon-Sun) reach a certain amount, you won’t be charged for any more journeys. This calculator focuses on single fares, but it’s a critical cost-saving feature for frequent travelers.
- Special Routes: Some specific station-to-station routes have unique fares that don’t strictly follow the zone rule, though this is less common.
Frequently Asked Questions
What are peak and off-peak times?
Peak fares apply Monday to Friday (not on public holidays) between 06:30 and 09:30, and between 16:00 and 19:00. Off-peak fares apply at all other times, including all day on weekends and public holidays.
Is it always cheaper to use Oyster/Contactless?
Yes. For any given single journey on the Tube, DLR, London Overground, and most National Rail services in London, the Oyster/Contactless fare is significantly lower than the cash fare.
Does this calculator account for the daily cap?
This fare calculator for the London Underground is designed to show the price of a single journey. It does not calculate your position relative to the daily or weekly cap. However, the single fare it shows is the amount that would contribute towards your cap.
Do children pay to travel on the Tube?
Children under 11 can travel for free on the Tube when accompanied by a paying adult. Older children may be eligible for discounted Zip Oyster cards. For more info, consult our London travel with kids guide.
What if my journey spans multiple zones?
The fare is calculated based on the highest zone number you enter. For example, a trip from Zone 4 to Zone 2 is a “Zone 2-4” journey.
Why is the cash fare so high?
Transport for London (TfL) prices cash fares much higher to strongly encourage the use of the more efficient Oyster and contactless payment systems, which speed up entry at ticket barriers and reduce operational costs.
Can I use this calculator for the bus?
No, this calculator is specifically for zone-based rail (Tube, DLR, Overground). London buses have a simple, flat fare per journey, and they do not accept cash. Check out our London bus fare explainer for details.
Are weekend fares always off-peak?
Yes, all journeys on Saturdays and Sundays are charged at the off-peak rate, regardless of the time of day, making our fare calculator for the London Underground a great tool for planning weekend trips.