Free Travel Planning Tools: Currency, Budget and Timezones

Every trip involves a cluster of calculations that are easy to get wrong and expensive when you do — how much cash to carry, what time it is at your destination, how far you can drive on a tank, what to tip. Most travel apps solve for one thing and bundle the rest behind subscriptions or account walls. The tools below solve each calculation individually, free, without requiring you to install anything or log in. All run in your browser. The full collection is in the Calculators hub.

Currency Converter

Exchange rates shift daily, and the rate your bank or airport kiosk offers is rarely the interbank rate you see quoted online. The gap — typically 2–5% — matters more than most travelers realize, especially on longer or higher-budget trips.

The Currency Converter gives you the current mid-market rate between any two currencies, no account needed. Use it before you travel to estimate how many local units your home currency buys, then use it again at your destination to sense-check any rate you are offered at an exchange counter.

Worked example: Traveling from the UK to Japan with £1,200 in travel money. At a mid-market rate of £1 = ¥190, that converts to ¥228,000. An airport bureau offering £1 = ¥181 (a 4.7% spread) nets only ¥217,200 — a difference of ¥10,800, roughly £57. Checking the mid-market rate before you leave makes the cost of that spread immediately visible and lets you decide whether to use a fee-free travel card, a currency exchange service, or withdraw from a local ATM instead.

For multi-destination trips, convert each leg's travel budget separately and sum the home-currency totals to build a realistic spending plan before you book anything.

Time Zone Converter

Missing a flight because of a timezone confusion is one of the most avoidable travel mistakes — and it happens more often than airlines publicly acknowledge, especially across daylight saving transitions or multi-stop itineraries.

The Time Zone Converter shows the exact local time in any city given a reference time in another. Three situations where this matters most:

Booking overnight flights. A flight departing Bangkok at 23:55 and arriving in London at 06:20 the next morning looks like just over six hours on the ticket. The converter shows it is actually 11 hours 25 minutes once you account for the 7-hour time difference — relevant for deciding whether to book the overnight leg or wait for a daytime departure that better fits your schedule.

Scheduling remote work calls while traveling. If you are in New York and need to join a 9am London standup during a trip to Thailand, the converter shows that 9am GMT is 4pm Bangkok time — manageable. The same call at 3pm London is 11pm in Bangkok — probably not. Knowing this before your trip lets you block off realistic availability windows instead of discovering conflicts on the day.

Avoiding daylight saving surprises. The US and Europe change their clocks on different dates each spring and autumn. If your trip straddles a transition date, the converter shows the correct offset for each specific date in your itinerary rather than a fixed value that may be off by an hour for part of your trip.

For calculating the total duration of a flight or layover, use the Time Calculator, which adds and subtracts hours and minutes directly without requiring you to track the timezone arithmetic manually.

Unit Converter

Nearly every country except the US, Liberia, and Myanmar uses the metric system. The UK adds a layer of complexity by using metric for most things but miles for roads. The result for American travelers — and anyone moving between measurement systems — is a persistent background friction that the right tool eliminates.

The Unit Converter handles length, weight, volume, temperature, speed, and area — every measurement category a traveler actually encounters. Common uses:

Baggage limits. Airlines state weight limits in kilograms. A traveler used to thinking in pounds divides by 2.2: 50 lbs is 22.7 kg, 44 lbs is 20 kg. The converter makes this immediate and prevents overweight bag surprises at check-in.

Speed limits. European road signs are in km/h. At a posted 110 km/h on the German Autobahn, that is 68 mph. At 50 km/h through a French village, that is 31 mph. Travelers who calibrate their speed in mph can check the equivalent before adjusting to local conditions.

Weather and packing. A 28°C forecast in a European summer is 82°F — pack accordingly. 0°C is exactly freezing; −5°C is 23°F. Checking the temperature conversion for your destination's forecast prevents both over- and underpacking for conditions.

Markets and groceries. Buying 500g of cheese at a French market is just over one pound; a 2kg bag of flour is 4.4 lbs. Knowing the equivalent before you reach the counter prevents ordering ten times more than you intended from a vendor selling by unfamiliar units.

Fuel Cost Calculator

Road trips reliably produce one of travel planning's biggest estimation gaps: most people think in terms of price per liter or gallon without tracking how many liters the route actually burns. The result is a fuel budget that is routinely 20–40% below the real number.

The Fuel Cost Calculator takes distance, fuel efficiency (mpg or L/100km), and local fuel price and outputs the total fuel cost for the journey. It also handles per-passenger cost splitting.

Worked example: Driving from Rome to Naples — 220km. A rental car consuming 7L/100km burns 15.4 liters. At €1.75 per liter, the fuel bill for that leg is €26.95. With three passengers sharing costs, that is €8.98 each — a number that is easy to agree on in advance rather than at a petrol station. Run the full itinerary across multiple legs and sum the outputs to see total road-trip fuel spend before departure.

For car rental decisions where you are comparing a smaller diesel against a larger petrol vehicle at different daily rates, the fuel cost difference across your planned distance often changes the calculation significantly. Both scenarios take under a minute to run.

Date Calculator

Trip planning involves a cluster of date calculations that are simple in principle but error-prone under the time pressure of booking: how many days until departure, how long at each destination, whether a passport expires inside the validity window a country requires, whether a visa's duration covers the full stay.

The Date Calculator computes the exact number of days between two dates and adds or subtracts days from any starting date. Practical uses:

Passport validity windows. Many countries require a passport to remain valid for 6 months beyond your entry date. If your passport expires on September 15, 2026, and you plan to enter on June 1, 2026 — the required validity window closes December 1, 2026, which is after September 15. The passport does not satisfy the requirement, and the calculator makes that gap immediately visible rather than discoverable at the airport.

Trip duration. A trip booked as "two and a half weeks" is either 17 or 18 days depending on exactly how you count the start and end days. The calculator gives the precise number, which matters when a hotel charges by the night and a visa allows a fixed number of days.

Cancellation deadlines. Hotel and airline cancellation policies often state a number of days before arrival for full refund eligibility. The calculator counts back precisely from any arrival date to show the exact calendar date the deadline falls on.

Tip Calculator

Tipping norms vary sharply by country and service type — 20% at a US restaurant is expected; 10% at a French café is generous; tipping at all in Japan can be considered unusual. When a tip is appropriate, calculating the right amount and splitting it cleanly across a group still requires the same mental arithmetic everywhere.

The Tip Calculator handles bill amount, tip percentage, and group size simultaneously, outputting the tip amount, total bill, and per-person split. Three uses for travelers:

US dining. An $87 bill for four people at 18% produces a per-person total of $25.70. The calculator delivers this instantly rather than requiring mental arithmetic at the table when you already want to leave.

Service charges abroad. UK restaurants frequently add a 12.5% optional service charge. The calculator shows exactly how much that is on any bill so you can make an informed decision about whether to pay it, adjust it, or ask for it to be removed — without performing the arithmetic under social pressure.

Tour guides and hotel staff. Tipping a guide on a day tour or a hotel porter involves estimating a fair percentage of a service fee. Use the calculator to work out a clean rounded amount that reflects the quality of service without guessing.

A Complete Pre-Trip Checklist

These tools connect into a practical sequence. Run through them before any trip with an international or cross-region component:

Use the Currency Converter to establish the current mid-market rate and identify the best exchange option before you arrive.
Check the Time Zone Converter for your destination to prevent scheduling errors on departure day and throughout the trip.
Use the Unit Converter to translate baggage limits, speed signs, and weather forecasts into familiar units before you leave.
Run the Fuel Cost Calculator for each planned driving segment to estimate and split the road-trip budget in advance.
Use the Date Calculator to confirm passport validity windows, visa stay durations, and cancellation deadlines before booking.
Bookmark the Tip Calculator for restaurants and services where gratuity is expected or calculated at the table.

Frequently Asked Questions

Does the currency converter use live exchange rates?
The converter uses current mid-market rates as a reference. For actual transactions, the rate you receive will vary by provider — typically 1–5% from the mid-market rate depending on whether you use a bank, exchange bureau, or a fee-free travel card like Wise or Revolut.

Which countries use the metric system?
Nearly every country except the US, Liberia, and Myanmar uses metric as the primary system. The UK uses metric for most measurements but miles for road signs and distances. The unit converter handles any combination without you needing to know the rules of each country in advance.

How far in advance should I check exchange rates?
Rates change daily. Check again 24–48 hours before exchanging money or making a travel payment. Use the converter as a recurring reference point in the days before departure rather than a one-time snapshot taken weeks out.

Do I need to create an account to use any of these tools?
No. Every tool on Nutilz runs entirely in your browser. No account, no sign-up, no data stored — close the tab and nothing is retained.

What is the tipping norm in countries where tipping is unusual?
In Japan, tipping is generally not expected and can occasionally be perceived as impolite. In most of Southeast Asia and China, tipping is not required but appreciated at tourist-facing restaurants. In Australia, tipping is discretionary. In the US and Canada, 15–20% at sit-down restaurants is the standard. The tip calculator works for any percentage and any bill size regardless of local norm — use it once you know the expected percentage for your destination.

None of these tools require an account, store any data, or show ads. All processing runs in your browser. The complete set of calculators is in the Calculators hub. The full collection of 80+ free tools across finance, development, text, design, and wellness is at the Nutilz homepage.