Microliters to US Cups (µL to cup)

1 microliter equals 0.000004226752838 US cups (rounded).

1 microliter = 0.000004226752838 US cups

How to convert microliters to US cups

To convert microliters to US cups, multiply the number of microliters by 0.000004226752838. The factor is rounded to 10 significant digits. To go the other way, multiply US cups by 236,588.2365.

US cups = microliters × 0.000004226752838

Example: 10 microliters = 0.00004226752838 US cups.

Pints, quarts, gallons and fluid ounces differ between the US and the UK. Units are labeled 'US' or 'imperial' to avoid confusion.

About these units

Microliter (µL)

Metric (SI)Current unit

One millionth of a liter, equal to one cubic millimeter. Used for very small liquid volumes.

Older laboratory papers often call this volume a lambda, written with the Greek letter, and that name has been discouraged since 2014 in favor of the microliter. The prefix micro, meaning one millionth, entered the metric prefix list in 1873, when the symbol mu was eventually chosen because the capital M was already taken by mega. The unit therefore combines a nineteenth-century prefix with the liter.

One microliter is 10 to the minus 6 liter, which is the same volume as one cubic millimeter and one thousandth of a milliliter. Some medical test results print it as mcL instead of using the Greek letter. Small volumes like this matter wherever tiny samples are pipetted or reported, and the figure used here is exactly 0.000001 liter.

1 microliter = 0.000001 liters (exactly).

Sources: Wikipedia: Litre; Wikipedia: Metric prefix

US Cup (cup)

US customaryCurrent unit

One sixteenth of a US gallon, 236.588 mL (8 US fluid ounces). The standard US recipe cup.

Cups began as household drinking vessels, not scientific units, which is why they remain the messiest measures in the kitchen. The US customary cup was defined by slicing up the gallon: half a pint, or eight US fluid ounces, about 236.6 milliliters. Unlike the larger units, nobody ever fixed it to a physical vessel, so it exists only as a fraction of the gallon.

The customary cup is not the only American cup. For nutrition labels, US regulation defines a cup as exactly 240 milliliters, a rounder figure that sits slightly above the customary size. Packaged foods therefore list a serving in the legal cup while a measuring cup from the hardware store follows the customary definition. The gap is 3.4 milliliters, which hardly matters for soup but can matter in baking. Cup measures also hide the weight of dry ingredients, since a cup of sifted flour and a cup of packed flour differ substantially, which is why much of the world prefers grams.

1 US cup = 0.2365882365 liters (exactly).

Sources: Wikipedia: Cup (unit); NIST SP 811, Appendix B.8: conversion factors for volume; 21 CFR 101.9: nutrition labeling household measures

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