Best Ratio Calculator Apps

214+ iOS apps curated and reviewed

4.4 avg rating
19 free apps
Updated June 2026

Dilution Calculator is the household name in ratio calculator, but it's far from the only option. We track 214+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Ratio Calculator

Dilution Calculator#1

Dilution Calculator by Samuel Blackburn

Easily solve dilution ratios
Editor's Choice
šŸ”§ Utilities
4.7(138 ratings)
FreeAdsIn-App Purchases
Dilution Calculator screenshot 1
Dilution Calculator screenshot 2
Dilution Calculator screenshot 3
Dilution Calculator screenshot 4
Dilution Calculator screenshot 5

This utility app simplifies the process of calculating dilution ratios for various applications. Users can input their desired ratio and bottle size to get instant, accurate results for the amounts of water and solution needed. It's ideal for tasks like car detailing, valeting, and paint mixing.

Ratio Calculator Tool#2

Ratio Calculator Tool by Kubilay Erdogan

Ratio calculating companion
Strong Contender
šŸ”§ Utilities
3.3(12 ratings)
FreeIn-App Purchases
Ratio Calculator Tool screenshot 1
Ratio Calculator Tool screenshot 2

This utility app specializes in calculating proportions, solving for an unknown value in direct and inverse ratio equations. It handles scenarios like price increases and speed decreases, offering a simple yet effective tool for proportion-based problems.

Ratio Calculator Total Tool#3

Ratio Calculator Total Tool by SHIGETO TAKAGI

Back Calculation from Total
Worth Considering
šŸ”§ Utilities
4.9(7 ratings)
FreeAds
Ratio Calculator Total Tool screenshot 1

This free utility app calculates ratios and totals from given inputs. It can also perform back calculations to determine ratios from a total. It even helps calculate heating time based on microwave wattage.

More Ratio Calculator apps to explore

4
Aspect Ratio X Calc
Aspect Ratio X Calc
Aspect Ratio X Calc
A : B = C : X To find X
Free

This utility calculates unknown values in aspect ratios, useful for resizing images and clipping. It simplifies the process of determining proportional dimensions for various visual applications.

Calculate unknown aspect ratio valuesInput numbers for calculationResizing images
šŸ”§ Utilities
(3)
free
5
Ratio & Text Calculator
Ratio & Text Calculator
Ratio & Text Calculator
for proportional expressions
Free

This utility app simplifies calculations for proportional expressions and mathematical formulas. It offers a dedicated ratio calculator for recipes and proportions, and a text calculator that accepts keyboard input or Apple Pencil for complex equations.

Ratio calculator for proportional expressionsAddition ratio calculationsText calculator for mathematical expressions
šŸ”§ Utilities
(4)
free
6
Financial Calculator: Percent
Financial Calculator: Percent
Financial Calculator: Percent
Tax Percentage, Profit Margin
Free

This app offers a comprehensive suite of over 40 financial and utility calculators. Easily handle complex calculations like investment analysis, tax percentages, profit margins, and everyday percentage needs with a clean and intuitive interface.

Over 40 built-in calculatorsFinancial calculators (ROI, IRR, NPV)Tax and profit margin calculations
šŸ’° Finance
(14K)
subscription
7
Fraction Calculator Plus #1
Fraction Calculator Plus #1
Fraction Calculator Plus #1
Decimal to Fractions Converter
Free

Easily perform fraction calculations including addition, subtraction, multiplication, and division. Convert fractions to decimals and vice versa with a clear, user-friendly interface. Ideal for students, cooks, and DIYers needing quick and accurate fraction management.

Add, subtract, multiply, and divide fractionsConvert fractions to decimalsAutomatically simplifies fractions
šŸ“Š Productivity
(22K)
free with in-app purchases
8
Ratio Calculator Pro
Ratio Calculator Pro
Ratio Calculator Pro
X:Y
Free
šŸ”§ Utilities
(0)
9
Fraction Calculator-Decimal RA
Fraction Calculator-Decimal RA
Fraction Calculator-Decimal RA
Fraction Calculator & Tutor
Free

This tool performs all basic fraction operations, converts to decimals, and compares fractions. It offers a practice mode with a "wrong answer book" for targeted learning and is available in multiple languages.

Basic fraction operationsDecimal conversionFraction comparison
šŸ”§ Utilities
(13)
ad-supported
10
Easy Golden Ratio Calculator
Easy Golden Ratio Calculator
Easy Golden Ratio Calculator
by Innovative Tomato, LLC
Free

This tool helps users calculate proportions based on the golden ratio (1:1.618). Input any one value, and it automatically computes the other two, aiding in the creation of aesthetically pleasing designs.

Golden ratio calculation (1:1.618)Input any variable to find othersAids in natural-looking design
šŸ“Š Productivity
(1)
ad-supported
11
Calculator with History +
Calculator with History +
Calculator with History +
No ads & Scientific calculator
Free

This free calculator app offers a fast, ad-free experience with a visual input and calculation history. Customize your experience with various keyboard sounds and colors, and access advanced scientific functions when needed.

Ad-free experienceCalculation historyVisual input
šŸ’° Finance
(23K)
free with in-app purchases
12
Ratio Calculator - Proportion
Ratio Calculator - Proportion
Ratio Calculator - Proportion
Aspect Ratio Calculator
$4.99
šŸ”§ Utilities
(0)
13
Calculator Air: AI Math Solver
Calculator Air: AI Math Solver
Calculator Air: AI Math Solver
Basic, Scientific & Photo Math
Free

Solve math problems instantly with a powerful AI-driven calculator. Features include basic and scientific calculations, a photo math solver, and an AI homework helper for step-by-step explanations. Ideal for students and professionals needing quick, accurate math solutions.

Basic and scientific calculatorPhoto math solverAI homework helper
šŸ”§ Utilities
(81K)
subscription
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)
šŸ“Š Productivity
(4.8K)
free with in-app purchases
15
Ratio Memo Calculator
Ratio Memo Calculator
Ratio Memo Calculator
Save ratios in advance & calc.
Free

Save and reuse frequently used ratios with this calculator. It supports pre-set ratios for screen sizes, aspect ratios, and common mathematical constants. Quickly calculate missing values with decimal point support.

Save common ratios in advanceCalculate missing values from one inputSupports decimal points
šŸ“Š Productivity
(0)
free
16
Easy Dilution Ratio Calculator
Easy Dilution Ratio Calculator
Easy Dilution Ratio Calculator
for Car Wash, Pesticides, Etc
Free

This utility app helps users quickly calculate precise dilution ratios for various liquids. It supports multiple calculation methods and unit conversions, making it ideal for tasks like mixing car wash soaps, pesticides, and cleaning agents.

Calculate dilution ratio with concentrate or water volumeCalculate dilution ratio with total volumeConvert between liters, milliliters, gallons, and ounces
šŸ”§ Utilities
(0)
ad-supported
17
Construction Master Pro Calc
Construction Master Pro Calc
Construction Master Pro Calc
Feet Inch Fraction Calculator
Free

This app is a powerful construction calculator designed for professionals working with dimensions. It offers a wide range of solutions for dimensional math, right angle calculations, area and volume, and special functions, helping to improve speed and accuracy in layouts, bids, and estimates.

Dimensional math and conversionsRight angle and rafter calculationsArea and volume solutions
šŸ”§ Utilities
(39K)
free with in-app purchases
18
Ratios
Ratios
Ratios
A calculator for making coffee
Free

This application helps home baristas calculate precise coffee brewing ratios. Easily determine the exact weight of coffee beans and water needed for your desired brew strength. All values are instantly editable to see how adjustments impact your final cup.

Calculate coffee bean and water weightsAdjustable brew strengthInstant value updates
šŸ”§ Utilities
(77)
free
19
Simple Golden Ratio Calculator
Simple Golden Ratio Calculator
Simple Golden Ratio Calculator
by Koji Watanabe
Free
🌟 Lifestyle
(0)
20
RATIO - Golden ratio & Silver ratio Calculator
RATIO - Golden ratio & Silver ratio Calculator
RATIO - Golden ratio & Silver ratio Calculator
by SUPER CROWDS, K.K.
Free

This tool helps designers quickly calculate the Golden Ratio and Silver Ratio. Input your desired numbers and instantly see five levels of results presented visually. It simplifies complex calculations for design projects.

Golden Ratio calculationSilver Ratio calculationVisual graphic explanation
šŸ“Š Productivity
(8)
free

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