How to Convert Grams to Cups for Sugar

To convert grams to cups for sugar, divide by the sugar's grams per cup: granulated sugar is 200 grams per cup, so 400 grams equal 2 cups, while brown sugar packs at 220 grams per cup and powdered sugar at only 120 grams per cup. Check any amount instantly in our free unit converter, and read on for why the sugar type changes the answer.

Try it now: Unit Converter →

The Formula, and Why There Is No Single Number

The formula is cups = grams / grams-per-cup, and the reason recipes cannot give one universal number is that a cup measures volume while a gram measures mass, so the conversion depends on how densely the sugar packs into the cup. Granulated sugar settles at about 200 grams per cup, which makes 100 grams equal 0.5 cups, 250 grams equal 1.25 cups, and 500 grams equal 2.5 cups. Change the sugar and the divisor changes with it, which is why a converter that asks only for grams and answers in cups without asking which sugar is guessing. Always name the sugar before converting, and if a recipe gives only grams, that is actually a gift: weighing is more accurate than scooping, and the gram figure is the one worth trusting. Our cups to grams guide for flour shows the same density logic on the flour side, where the spread between flour types is even wider.

Try it now: Unit Converter →

Granulated Sugar: 200 Grams per Cup

Granulated white sugar, the everyday table sugar, weighs 200 grams per level US cup, with most references giving a range of 198 to 201 grams depending on crystal size and settling. The worked conversions are 50 grams = 0.25 cups, 100 grams = 0.5 cups, 150 grams = 0.75 cups, 200 grams = 1 cup, 300 grams = 1.5 cups, and 400 grams = 2 cups. For a recipe calling for 225 grams, the answer is 1.125 cups, which in practice means 1 cup plus 2 tablespoons, since 1 tablespoon of granulated sugar is about 12.5 grams. If your scale reads in ounces rather than grams, our free grams to ounces converter bridges that gap, and for bulk baking our free kilograms to ounces converter handles the kilogram step. Granulated is the baseline every other sugar is compared against, so learn 200 first and the rest follow.

Brown Sugar: 220 Grams per Packed Cup

Brown sugar is granulated sugar with molasses, and the molasses makes it sticky, which makes it packable, which makes its cup weight depend on how hard you press. A firmly packed cup of light or dark brown sugar weighs about 220 grams, while a loosely spooned cup weighs closer to 200 grams, a 10 percent spread that can change a cookie's texture. Recipes that mean brown sugar almost always mean packed, and the classic test is that a packed cup holds its shape when turned out of the measure like a sandcastle. The conversions on the packed basis are 110 grams = 0.5 cups, 220 grams = 1 cup, 330 grams = 1.5 cups, and 440 grams = 2 cups. If a recipe gives brown sugar in grams, weigh it and ignore packing entirely, because the gram figure already contains the molasses and the moisture, and packing is only a problem for volume measures.

Powdered Sugar: 120 Grams per Cup

Powdered, confectioners, or icing sugar is ground fine and mixed with a little cornstarch, and the fine grind traps air, so a cup weighs only about 120 grams, barely more than half a cup of granulated. The conversions are 60 grams = 0.5 cups, 120 grams = 1 cup, 180 grams = 1.5 cups, and 240 grams = 2 cups, and sifting before measuring drops the weight further, toward 100 grams per sifted cup, because sifting adds even more air. This is the sugar where cup-to-gram conversion fails most visibly: a frosting recipe converted with the granulated divisor of 200 would use nearly twice the intended powdered sugar and turn to cement. If a frosting recipe gives cups, sift then spoon the sugar into the cup and level it, and if it gives grams, weigh it, because weighing sidesteps the sifted-versus-unsifted argument completely.

Other Sugars: Caster, Demerara, and Turbinado

Caster sugar, the fine sugar of British baking, weighs about 225 grams per cup, slightly more than granulated because the finer crystals pack tighter, so 225 grams = 1 cup and 112 grams = 0.5 cups. Demerara and turbinado sugars, the large-crystal golden sugars, weigh about 200 grams per cup like granulated, but their crystals bridge and leave air gaps, so a loosely filled cup can read as little as 185 grams. Liquid sweeteners are a different unit problem: golden syrup weighs about 340 grams per cup, honey about 340 grams per cup as well, and maple syrup about 315 grams per cup, and none of them should be converted with a dry-sugar divisor. When a recipe mixes dry and liquid sweeteners, convert each with its own density and keep the two columns separate, because a single cups figure for a mixed sweetener total is meaningless.

The Spoon-and-Level vs Scoop Trap

The largest error in sugar conversion is not the divisor but the measuring technique, because scooping a cup directly from the bag compresses the sugar and can add 20 to 30 percent over a spooned-and-levelled cup. The correct volume method is to spoon sugar into the cup until it overflows, then level it with a straight edge, without tapping or pressing, except for brown sugar, which is deliberately packed. A scooped cup of granulated sugar can weigh 240 grams instead of 200, which turns a 200-gram recipe into a 240-gram reality and explains many mysteriously over-sweet or flat bakes. The trap compounds when scaling: a tripled recipe scooped three times carries three times the excess. If you own a scale, this whole section becomes irrelevant, which is why professional bakers weigh everything and why recipes written in grams are more reliable than recipes written in cups in the first place.

US Cups vs Metric Cups

A US cup is 236.59 milliliters and a metric cup is 250 milliliters, a 5.7 percent difference that shifts every grams-per-cup figure when the recipe's country changes. The figures in this article use the US cup, because most cup recipes online are American, but an Australian recipe's metric cup of granulated sugar weighs about 211 grams rather than 200, since the same sugar fills a larger volume. The difference is small enough to ignore for a single cake and large enough to matter for a doubled batch of meringue, where sugar ratios are tight. If a recipe does not state its cup, check its other measures: 250 ml water in the same recipe signals metric cups, while 8 fluid ounces signals US cups. For liquid ingredients in the same recipe, our free gallons to liters converter handles the bulk liquid step, and the same country check applies there.

Quick Reference and the Weigh-It Rule

Keep these four numbers: granulated 200 grams per cup, brown packed 220, powdered 120, caster 225. Divide grams by the right number to get cups, multiply cups by the right number to get grams, and round to the nearest tablespoon when the answer is awkward, since 1 tablespoon of granulated sugar is 12.5 grams. But the deeper rule is simpler: if you can weigh the sugar, weigh it, and convert only when a recipe forces you into cups. A scale costs less than one ruined celebration cake, removes every density and technique argument in this article, and works identically in every country. When conversion is unavoidable, our free unit converter checks any amount instantly, and the table above lets you verify its answer by hand.