Best Fuel Calculator Diesel Apps

217+ iOS apps curated and reviewed

4.6 avg rating
19 free apps
Updated July 2026

Whether you're new to fuel calculator diesel or looking for an upgrade, our curated collection of 217+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Fuel Calculator Diesel Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Simple Fuel Calculator (USA)Simple Fuel Calculator (USA)Free5.0★ (6)NoNoJul 2026
2Roadtrip Gas Price CalculatorRoadtrip Gas Price CalculatorFree4.7★ (218)NoYesJul 2026
3Fuel Calculator: Gas MileageFuel Calculator: Gas MileageFree4.8★ (58)YesYesJul 2026
4ClevCalc - CalculatorClevCalc - CalculatorFree4.7★ (12K)YesYesJul 2026
5MudflapMudflapFree4.7★ (4.3K)YesNoJul 2026
6AtoB: Find and Save on FuelAtoB: Find and Save on FuelFree4.7★ (2.3K)NoNoJul 2026
7FuelbookFuelbookFree4.8★ (1.2K)NoNoJul 2026
8Fuel MPG CalculatorFuel MPG CalculatorFree was $1.994.6★ (353)NoYesJul 2026

Top Picks for Fuel Calculator Diesel

Roadtrip Gas Price Calculator#2

Roadtrip Gas Price Calculator by Kodeword Limited

Split the cost of fuel!
Strong Contender
✈️ Travel
4.7😐(218 ratings)
FreeIn-App Purchases
Roadtrip Gas Price Calculator screenshot 1
Roadtrip Gas Price Calculator screenshot 2
Roadtrip Gas Price Calculator screenshot 3
Roadtrip Gas Price Calculator screenshot 4

Effortlessly calculate your road trip expenses, including fuel costs based on your car model and current gas prices. Easily split costs with friends, compare routes for savings, and track your carbon emissions for a more eco-conscious journey.

What We Love

  • 👍 Helpful for planning trips
  • 🚀 Accurate fuel cost estimates
  • 💡 Useful for splitting costs with friends
  • 🚗 Integrates with vehicle details

Room to Improve

  • 💰 Requires subscription for basic features
  • 🐛 Inaccurate or missing fuel price data
  • 🚧 Difficult to add/remove vehicles
Fuel Calculator: Gas Mileage#3

Fuel Calculator: Gas Mileage by SHPAVDA, TOO

Trip Cost, MPG & Consumption
Worth Considering
🔧 Utilities
4.8(58 ratings)
FreeAdsIn-App Purchases
Fuel Calculator: Gas Mileage screenshot 1
Fuel Calculator: Gas Mileage screenshot 2
Fuel Calculator: Gas Mileage screenshot 3
Fuel Calculator: Gas Mileage screenshot 4
Fuel Calculator: Gas Mileage screenshot 5
Fuel Calculator: Gas Mileage screenshot 6

Estimate travel costs, calculate fuel needed for trips, and evaluate your vehicle's fuel efficiency. Supports various units of measurement for global use and works offline.

More Fuel Calculator Diesel apps to explore

4
ClevCalc - Calculator
ClevCalc - Calculator
ClevCalc - Calculator
All-In-One Calculator
Free

This comprehensive calculator app offers a wide range of tools for everyday calculations, from basic arithmetic and scientific functions to unit and currency conversions. It includes specialized calculators for loans, health, fuel costs, GPA, and more, all within a clean and user-friendly interface.

Scientific calculatorUnit converterCurrency converter
📊 Productivity
(12K)
free with in-app purchases
5
Mudflap
Mudflap
Mudflap
Instant Diesel Discounts
Free

Save on diesel fuel at over 2,800 truck stops nationwide with instant discounts. Access free, truck-safe GPS navigation that avoids low bridges and weight restrictions. Simply link your card to start saving.

Instant diesel discounts2,800+ truck stop locationsFree truck-safe GPS navigation
🗺️ Navigation
(4.3K)
ad-supported
6
AtoB: Find and Save on Fuel
AtoB: Find and Save on Fuel
AtoB: Find and Save on Fuel
Make an impact on fuel costs
Free

This app helps users find significant discounts on diesel and unleaded fuel at various stations. It offers route planning with discount optimization and seamless navigation integration. Additionally, it provides robust fleet management tools for controlling spending and managing finances.

Fuel discounts on diesel and unleadedFuel discount station locatorRoute planning with discount optimization
🗺️ Navigation
(2.3K)
free
7
Fuelbook
Fuelbook
Fuelbook
Truck Stop Diesel Prices
Free

Find nationwide truck stop diesel prices to save money on fuel. Access over 5000 truck stop locations with up-to-date pricing information. A trusted resource for professional drivers since 2010.

Nationwide diesel price searchOver 5000 truck stop locationsSave money on fuel
🗺️ Navigation
(1.2K)
free
8
Fuel MPG Calculator
Fuel MPG Calculator
Fuel MPG Calculator
Mileage log for gas costs
Free
$1.99 | 100% OFF

Track fuel expenses, operating costs, and maintenance for all your vehicles. Gain insights into total cost of ownership and improve efficiency with smart reminders and analytics.

Multi-vehicle managementSmart fuel and energy trackingTotal Cost of Ownership (TCO) analysis
📊 Productivity
(353)
free with in-app purchases
9
Fuelly: MPG & Service Tracker
Fuelly: MPG & Service Tracker
Fuelly: MPG & Service Tracker
MPG, Mileage & Fuel Economy
Free

Track your vehicle's fuel economy and maintenance history. Set reminders for essential services like oil changes and tire rotations to help you save money. Seamlessly sync your data with the web platform for comprehensive vehicle management.

Tracks gas mileage and vehicle maintenanceCustomizable service remindersOnline sync to Fuelly.com
💰 Finance
(28K)
freemium
10
10-4 by WEX
10-4 by WEX
10-4 by WEX
Diesel savings for truckers
Free

This app helps truckers find and pay less for diesel fuel nationwide. It provides a fuel map with discounts at popular truck stops and allows secure payment directly through the app. Users can track their purchases, rewards, and savings.

Nationwide fuel mapDiesel discount finderSecure in-app payment
🗺️ Navigation
(3.8K)
free
11
Diesel Cost Estimator: Trucks
Diesel Cost Estimator: Trucks
Diesel Cost Estimator: Trucks
MPG Calculator for Truckers
Free
🔧 Utilities
(0)
12
Fuel Tank Charts
Fuel Tank Charts
Fuel Tank Charts
Fuel Haulers Pocket Charts
Free

This utility app provides fuel haulers with quick access to tank charts and loading weights for diesel and gasoline. It allows users to reference stick readings for tank ullage at specific percentages and customize stick increments for precise measurements.

Tank chart lookupDiesel/Gasoline loading weightsUllage reference (90%/95%)
🔧 Utilities
(3)
free
13
Greenlane - Fuel Smarter
Greenlane - Fuel Smarter
Greenlane - Fuel Smarter
Deep Diesel Discounts
Free

This app provides significant discounts on diesel, DEF, and reefer fuel for truckers and fleet owners. Members can save an average of 70¢ per gallon at thousands of participating locations nationwide. It also offers a rewards program where every gallon earns points for even deeper savings.

Diesel, DEF, and reefer fuel discountsSave up to $1.30 per gallon3,000+ participating locations
🗺️ Navigation
(1.1K)
free with in-app purchases
14
OneCalc: All-in-one Calculator
OneCalc: All-in-one Calculator
OneCalc: All-in-one Calculator
Calculates everything. Try it.
Free

This app offers a comprehensive suite of over 40 calculators and unit converters for various needs, including finance, health, construction, and everyday math. It features standard, scientific, and specialized calculators for tasks like loan amortization, currency conversion, and material estimation.

Over 40 calculators and unit convertersStandard and scientific calculator functionsFinancial calculators (interest, loan, currency)
📊 Productivity
(4.8K)
free with in-app purchases
15
FuelApp: Diesel discounts
FuelApp: Diesel discounts
FuelApp: Diesel discounts
Save up to $1/gal at the pump
Free

Find discounted diesel fuel at major truck stops nationwide. Securely pay at the pump using fuel codes without needing to go inside. Save money on every gallon with no hidden fees.

Major diesel discountsSave up to $1/gallonSecure at-the-pump payments
🗺️ Navigation
(19)
free
16
Fuel Cost Calculator: Trip
Fuel Cost Calculator: Trip
Fuel Cost Calculator: Trip
Consumption: Petrol, diesel,..
Free

Estimate trip fuel costs and calculate vehicle fuel consumption. Input distance, efficiency, and price to get precise estimates for your journeys.

Estimate trip fuel costCalculate fuel amount neededCalculate fuel consumption
🔧 Utilities
(10)
freemium
17
Road Trip MPG Lite
Road Trip MPG Lite
Road Trip MPG Lite
MPG and Mileage Tracking
Free

Easily track your car's mileage, fuel economy, and maintenance expenses. This app offers fast data entry, comprehensive statistics, and international support for various units. It allows unlimited data saving and seamless upgrades to a full version.

Fast fuel, price, and odometer inputSingle-touch fuel entryFuel price/mileage graphing
💰 Finance
(44)
free
18
Two Stroke Mix Calculator
Two Stroke Mix Calculator
Two Stroke Mix Calculator
Manage your premix fuel/gas
Free

This app simplifies the process of mixing 2-stroke fuel for various engines. It calculates the precise amount of oil needed for any fuel quantity and ratio, and helps track stored fuel freshness and expiry dates.

Quick mix calculationTrack stored fuel profilesFuel age and expiry tracking
🔧 Utilities
(54)
free
19
Fuel Tracker Gas & Mileage Log
Fuel Tracker Gas & Mileage Log
Fuel Tracker Gas & Mileage Log
Monitor car fuel expenses
Free

Easily track your vehicle's fuel consumption and mileage. Log gas purchases, calculate fuel economy, and view detailed statistics and plots of your driving data. Supports multiple units and data synchronization.

Track fuel log (quantity, price, odometer)Calculate gas mileage and costView statistics and plots
🔧 Utilities
(608)
freemium
20
Trip fuel cost calculator
Trip fuel cost calculator
Trip fuel cost calculator
Trip fuel consumption and cost
$3.99
$5.99 | 33% OFF

Estimate your trip's fuel consumption and cost by entering distance, vehicle's fuel efficiency, and fuel price. Optionally add toll costs and passenger numbers for a per-person breakdown. Supports imperial and metric units.

Fuel consumption estimationTrip cost calculationToll cost addition
✈️ Travel
(1)
paid

FAQ about Fuel Calculator Diesel

What are the best fuel calculator diesel apps for iPhone?
Simple Fuel Calculator (USA) tops our fuel calculator diesel apps ranking as of July 2026, with a 5.0-star average from 6 App Store ratings, and it's free to download.
Yes — 19 of the top fuel calculator diesel apps we rank are free to download, including Simple Fuel Calculator (USA) and Roadtrip Gas Price Calculator.
Simple Fuel Calculator (USA) has no ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 217+ fuel calculator diesel apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
Simple Fuel Calculator uses standard units for the USA, including miles for distance, dollars ($) for cost, and U.S. gallons for fuel volume.
Simple Fuel Calculator is designed for Apple devices and is compatible with iPhone, iPad, and iPod.