You've found a wonderful Swedish recipe for kladdkaka or a classic Nordic mulled drink. The ingredient list calls for everything in kaffekoppar. Your measuring tools, meanwhile, speak fluent American: cups, pints, and quarts. Now you're standing in your kitchen, phone in one hand and a quart jar in the other, wondering how these two worlds connect.

Good news: bridging the gap between the quart and the kaffekopp is simpler than it looks. Both are units of volume, which means they measure the same thing—how much space a liquid or dry ingredient fills. Once you understand what each unit represents, converting between them becomes second nature.

This guide walks you through both units, explains how they relate, and gives you a ready-to-use reference table so you can get back to cooking instead of calculating.

What Exactly Is a Quart?

The quart is a unit of volume used primarily in the United States and, historically, throughout the British Commonwealth. The name comes from the Latin root meaning "fourth"—a quart is one-quarter of a gallon. It sits comfortably in the middle of everyday measuring: bigger than a cup, smaller than a half-gallon carton of milk.

Here's where things get slightly tricky. Not all quarts are identical.

The US Liquid Quart

In the United States, the liquid quart equals 32 fluid ounces, 4 cups, or 2 pints. It's the quart you see on milk cartons, ice cream tubs, and motor oil bottles. Expressed in metric terms, it holds approximately 946 milliliters—just shy of a full liter.

The Imperial Quart

The United Kingdom and some Commonwealth countries historically used the imperial quart, which is larger. It measures about 1,137 milliliters, roughly 20% more than its American cousin. If you're working from an old British recipe book, keep this difference in mind.

For most modern conversions—especially anything involving American recipes—the US liquid quart is the standard you'll want.

What Is a Kaffekopp?

Kaffekopp is Swedish for "coffee cup," abbreviated as kkp. It belongs to the family of traditional Scandinavian kitchen measures, alongside the deciliter (dl), matsked (tablespoon), and tesked (teaspoon).

In Sweden, Norway, and Denmark, the kaffekopp has been standardized in cookbooks as a fixed volume: 150 milliliters, or 1.5 deciliters. Despite its cozy name, it isn't the size of whatever mug happens to be in your cupboard. It's a defined measure, which makes it reliable for baking, where precision matters.

You'll encounter kaffekoppar most often in older Swedish recipes, translated Nordic cookbooks, and community recipe collections passed down through generations.

How Quarts and Kaffekoppar Relate

Both units measure volume, so they connect through a shared middle ground: the milliliter.

• 1 US liquid quart ≈ 946 milliliters
• 1 kaffekopp = 150 milliliters

Divide the quart's milliliter content by the kaffekopp's, and you get the working relationship:

1 quart ≈ 6.31 kaffekoppar

To convert in the other direction:

1 kaffekopp ≈ 0.16 quarts

A quick word on precision: because the quart doesn't divide evenly into 150-milliliter portions, these figures are rounded to two decimal places. For soup, stock, or beverages, that rounding is irrelevant. For delicate baking, weigh your ingredients when possible—it removes all guesswork.

Why This Conversion Matters in Real Life

This pairing sounds niche until you actually need it. Then it matters a lot.

Cooking From Scandinavian Recipes

Nordic cuisine has surged in global popularity. When a Swedish grandmother's recipe calls for 3 kkp of water or 2 kkp of cream, and your only large measure is a quart pitcher, knowing the relationship saves the dish. Three kaffekoppar is just under half a quart—easy to eyeball once you know the scale.

Brewing and Batch Beverages

Coffee culture runs deep in Scandinavia, and the kaffekopp earned its name honestly. If you're scaling a cold-brew concentrate or a glögg recipe from a small gathering to a party, converting between quarts and kaffekoppar keeps your ratios intact.

Canning, Preserving, and Meal Prep

Batch cooks and home canners often think in quarts—that's how mason jars are sized. Translating a preserve recipe written in kaffekoppar into quart batches tells you exactly how many jars you'll need before you start chopping.

International Kitchens and Food Businesses

Bakeries, food bloggers, and cookbook translators regularly move between measurement systems. A dependable quart-to-kaffekopp reference prevents errors that could ruin an entire production run.

Quart to Kaffekopp Conversion Table

The table below uses the US liquid quart and the standardized 150 ml kaffekopp. Values are rounded to two decimal places for practical use.

Notice how quickly the numbers grow. A single quart holds more than six kaffekoppar, which is why Scandinavian recipes rarely call for more than a few kkp at a time—they were written for home kitchens, not commercial ones.

Tips for Measuring With Confidence

1. Anchor yourself to 6.31. Memorize that one quart equals roughly six and a third kaffekoppar. Every other conversion builds from there.
2. Round sensibly by task. For liquids in soups or drinks, round to the nearest half kaffekopp. For baking, stay precise or switch to a scale.
3. Check which quart you're using. If a source mentions imperial units, remember that an imperial quart holds about 7.58 kaffekoppar—a meaningful difference over large volumes.
4. Use a graduated pitcher. A clear measuring jug marked in milliliters handles both systems. Measure 946 ml for a quart, or 150 ml per kaffekopp, without any math at all.
5. Convert once, write it down. If you translate a favorite recipe, pencil the converted amounts directly onto the card. Future-you will be grateful.

Frequently Asked Questions

Is a kaffekopp the same as a metric cup?

No. A metric cup, common in Australia and New Zealand, holds 250 milliliters. A kaffekopp holds 150 milliliters. Swapping one for the other will noticeably change your results, especially in baking.

Which quart does the conversion table use?

The table uses the US liquid quart of approximately 946 milliliters, since it's the most widely referenced quart today. If your source specifies imperial measurements, expect each quart to yield closer to 7.58 kaffekoppar.

Can I substitute a regular coffee mug for a kaffekopp?

Only approximately. Household mugs vary wildly, typically holding anywhere from 250 to 400 milliliters. For consistent results, use a measuring jug set to 150 milliliters instead.

Why do Scandinavian recipes use such unusual units?

They're not unusual locally—deciliters and kaffekoppar are simply part of everyday Nordic kitchen tradition. The deciliter-based system predates widespread adoption of pure metric cooking measures and stuck around because it works beautifully for home-scale recipes.

The Bottom Line

The quart and the kaffekopp come from different measuring traditions, but they describe the same thing: volume. One US quart holds approximately 6.31 kaffekoppar, and one kaffekopp equals about 0.16 quarts. Anchor those two numbers in memory—or bookmark the table above—and you can move between American and Scandinavian recipes without breaking stride.

Ready to put it into practice? Pull up that recipe you've been saving, run your quantities through the table, and start measuring. Your next Nordic-inspired dish is closer than you think.