A cooking conversion app is only worth installing if it asks what’s in the cup. A cup of flour weighs about 120 g and a cup of honey about 336 g, so any converter that answers “1 cup = 236.6 g” is assuming water. Of the ingredient-aware apps we checked, Cupify is the best free, no-ads option if you’re on iPhone and don’t need updates. Convert Units Calculator covers both iPhone and Android, shows its weight per cup on screen and doubles as a general unit converter. Kitchen Dial adds recipe scaling but needs a subscription.
All details come from each app’s current store listing in September 2026. Check the listing for current prices before you pay.
What should a cooking conversion app do? #
- Convert by ingredient. Cups to grams has no answer without one. The app needs a weight table for each ingredient.
- Show its numbers. Published charts disagree. King Arthur Baking puts a cup of all-purpose flour at 120 g, and USDA data says 125 g. An app that shows the grams per cup it’s using lets you check.
- Read and write fractions. Recipes say “1 1/2 cups,” not 1.5, and nobody owns a 0.83-cup measure.
- Handle other countries’ cups. US, UK and Australian recipes don’t use the same cup or tablespoon. More on that in US cup vs UK cup.
- Scale recipes, if you often double or halve.
Cooking conversion apps compared #
| App | Platforms | Ingredient weights | Scaling | Price | Last updated |
|---|---|---|---|---|---|
| Convert Units Calculator | iOS, Android | 26 ingredients, g/cup shown | Via keypad arithmetic | Free, one banner ad | 2026 (Cooking in v1.0.5) |
| Cupify | iPhone, iPad | Most common ingredients, USDA tables | No | Free, no ads | September 2018 |
| Kitchen Dial | iPhone | Ingredient weights, growing list | Portion button | $1.99/year for All Access | January 2024 |
| Metre – Kitchen Converter | iPhone, iPad, Mac | Structured ingredient list | Not listed | Free | December 2021 |
| Unit Converter – Convert all | iPhone, iPad, Mac | Cooking measurements | Not listed | Ads, subscriptions | 2026 |
The apps in detail #
Convert Units Calculator: cups to grams plus every other unit #
Convert Units Calculator is our app, so read this with that in mind. Its Cooking category asks you to pick one of 26 ingredients first: all-purpose, bread, whole wheat and almond flour, granulated, brown and powdered sugar, butter, milk, cocoa, cornstarch, oats, rice, chocolate chips, honey, maple syrup, oils, cream, yogurt, cream cheese, peanut butter, salt, breadcrumbs, coffee and water. It then converts teaspoons, tablespoons, fluid ounces, cups, milliliters and liters to grams, kilograms, ounces and pounds. The grams per cup it’s using is printed on screen. Dry goods mostly follow King Arthur’s chart, and liquids use physical density, so its milk is 243.7 g per cup where King Arthur says 227 g.
It reads fractions like “1 1/2” or “1½”, and when you convert grams back to cups it also shows the nearest measuring-cup mark (250 g of flour reads as 2.083333 cups and “2 1/8”). There’s no scaling button, but the keypad does arithmetic, so you can type 2/3*1.5 for one and a half times two thirds of a cup. The rest of the app converts 18 other categories, from temperature for oven settings to weight and volume.
Limits: 26 ingredients is a short list next to a USDA-based database. Its cooking volumes are US measures, so for a 250 mL metric cup you’d enter milliliters instead. The Cooking category arrived in version 1.0.5, so if you don’t see it, your copy hasn’t been updated.
Cupify: free, no ads, but not updated since 2018 #
Clafou’s Cupify converts between weight and volume for common ingredients, using conversion tables from the USDA National Nutrient Database, from almond butter to wild rice. You set the measurement with a swipe, and it shows cups, milliliters, fluid ounces, grams, pounds and ounces at once, with a choice of US, European or UK measures. It’s free, has no ads, no in-app purchases and a 4.6 rating from about 800 reviews.
The catch: version 1.2 came out in September 2018 and there hasn’t been an update since. It still runs on current iPhones according to its listing, but an app that old may stop working with a future iOS release. Some reviewers also note gaps in the ingredient list, such as eggs.
Kitchen Dial: best if you scale recipes #
Infinite Prospects’ Kitchen Dial uses a dial to set amounts, includes ingredient weights for volume-to-weight conversions, supports US, metric, Australian and imperial measures, converts oven temperatures, and has a Portion button that multiplies or divides a recipe. It’s iPhone-only.
Access is through an “All Access” subscription listed at $1.99 a year. Recent reviews criticize a paywall that appears right at launch, before you can try the app. Its last update was in January 2024.
Metre – Kitchen Converter: free and minimal, aimed at chefs #
Eddy Salzmann’s Metre bills itself as a kitchen tool for professional chefs, with ingredient-based weight and volume calculations and a structured ingredient list. It’s free, the listing says it collects no data, it’s under 1 MB, and it’s available in 10 languages. The last update was December 2021, and there aren’t enough ratings yet to show a score.
Unit Converter – Convert all: kitchen units inside a general converter #
oWorld Software’s converter includes cooking measurements among 18+ categories, next to currency, clothing sizes and a calculator. If you want one app for everything and don’t mind ads and subscription offers, it’s an option. For ingredient-by-ingredient cups to grams, a dedicated kitchen app is more direct.
Do you need an app at all? #
Honestly, the most accurate cooking converter is a kitchen scale. NIST’s culinary measurement tips call weighing ingredients “a best practice to improve recipe accuracy.” An app is for the step before: turning a recipe written in cups into grams you can weigh, or turning a metric recipe into cups when you don’t have a scale.
If you bake from the same handful of ingredients, a printed chart on the fridge does the job. Ours covers 23 of them: cups to grams conversion chart. The most searched one, flour, has its own page on grams in a cup of flour.
Which cooking conversion app should you pick? #
- Free, no ads, iPhone, and you accept an unmaintained app: Cupify.
- iPhone and Android, plus a general unit converter: Convert Units Calculator.
- You scale recipes up and down a lot: Kitchen Dial, if the subscription suits you.
- You want a tiny app with no data collection: Metre.
- You’d rather not install anything: a kitchen scale and a chart.
For converters that go beyond the kitchen, see our best unit converter app comparison.
Frequently asked questions #
Is there an app that converts cups to grams? #
Yes. Ingredient-aware apps like Convert Units Calculator, Cupify, Kitchen Dial and Metre convert cups to grams by asking which ingredient you’re measuring. General unit converters without an ingredient list can’t do it correctly.
Why does my converter say 1 cup is 236 grams? #
Because it’s assuming water. A US cup is 236.6 mL, and water weighs about 1 g per mL. Flour, sugar, butter and honey all weigh different amounts per cup, so the result is wrong for anything but water.
Are cooking conversion apps accurate? #
They’re as accurate as their weight table and your measuring. Published tables differ by a few percent (120 g vs 125 g for a cup of flour), and a scooped cup weighs more than a spooned one. Apps that show their grams per cup let you compare with the recipe’s source.
What’s the best free cooking conversion app? #
Cupify and Metre are free with no ads, though neither has been updated in years. Convert Units Calculator is free with a single banner ad and runs on both iPhone and Android.
Can a cooking app convert a UK or Australian recipe? #
Only if it knows which cup and spoon the recipe means. Australia uses a 250 mL cup and a 20 mL tablespoon. Kitchen Dial supports Australian and imperial measures. With others, convert the metric volume in milliliters rather than choosing “cup.”