Lowest Sugar Fresh Fruits
Fruit sugar is not a scandal, but if you are budgeting grams of it, the ranking starts surprisingly green: avocado leads at 0.3g of sugar per 100g, rhubarb follows at 1.1g, then lime at 1.7g and starfruit at 4g. The berries arrive just after — cranberry, raspberry, blackberry and strawberry all under 5g. One honest note: the sweet icons of the Arab table — dates at 63g and bananas at 12g — live at the other end of this database, and their pages say so plainly.
How this ranking works
Only fresh fruits enter — rows recorded raw in the database — because canning syrup and drying change the sugar story completely. Rows whose sugar was never measured (recorded as zero) are excluded so the table never presents a data gap as a fact. Within that scope the sort is ascending by grams of sugar per 100g, ties broken deterministically.
The table: top 20
| # | Food | Sugar (g / 100g) | Calories (kcal/100g) |
|---|---|---|---|
| 1 | Avocados, raw, California | 0.3 | 167 |
| 2 | Avocados, raw, all commercial varieties | 0.7 | 160 |
| 3 | Rhubarb, raw | 1.1 | 21 |
| 4 | Limes, raw | 1.7 | 30 |
| 5 | Avocados, raw, Florida | 2.4 | 120 |
| 6 | Lemons, raw, without peel | 2.5 | 29 |
| 7 | Carambola, (starfruit), raw | 4 | 31 |
| 8 | Cranberries, raw | 4.3 | 46 |
| 9 | Raspberries, raw | 4.4 | 52 |
| 10 | Acerola juice, raw | 4.5 | 23 |
| 11 | Blackberries, raw | 4.9 | 43 |
| 12 | Strawberries, raw | 4.9 | 32 |
| 13 | Melons, casaba, raw | 5.7 | 28 |
| 14 | Watermelon, raw | 6.2 | 30 |
| 15 | Grapefruit, raw, pink and red, all areas | 6.9 | 42 |
| 16 | Grapefruit, raw, pink and red and white, all areas | 7 | 32 |
| 17 | Pears, asian, raw | 7 | 42 |
| 18 | Grapefruit, raw, white, all areas | 7.3 | 33 |
| 19 | Currants, red and white, raw | 7.4 | 56 |
| 20 | Papayas, raw | 7.8 | 43 |
Source: the Alkemos food database — the same rows each food’s page shows (per-100g values; every name links to that food’s full page).
Reading the table
The avocado lesson
The least sugary fruit is the fattiest one — 0.3g of sugar against 15g of fat per 100g. It reframes "fruit" from sweetness to plant food: the low-sugar shelf is mostly fats (avocado, olives), acids (citrus, rhubarb) and berries.
Berries: the sweet spot
Cranberry, raspberry, blackberry and strawberry all sit between 4.3g and 4.9g of sugar while tasting like dessert. For most people watching sugar, the berry rows are where enjoyment and the budget shake hands.
And the famous sweet ones?
Dates run near 63g of sugar per 100g and bananas near 12g in this database — not forbidden, just expensive for a sugar budget. The honest pattern: enjoy them as deliberate portions, and let the top of this table carry the casual snacking.
Common questions
Why exclude canned and dried fruits?
Because the question is about fruit as picked, and processing rewrites the sugar column: syrup packs add it, drying concentrates it, and many canned rows in source databases simply never had their sugars measured. Fresh-only scope keeps every number comparable and every claim checkable.
Is fruit sugar different from added sugar?
Chemically the molecules are the same; the packaging is what differs — whole fruit brings fiber, water and chewing speed along for the ride, which is why guidance treats whole fruit and added sugar very differently. This page only ranks the measured sugar grams; it does not editorialise about either.
Which of these fit a keto plan?
Avocado and olives are keto staples by any margin; rhubarb, lime and the berries can fit small portions inside tight carb budgets. The keto-friendly collection on this site stages the wider pantry — this table simply shows where fruit's own sugars are lowest.
Turn these tables into a plan: the Calorie Calculator splits your daily budget into grams — free, no account needed.
New to this topic? Start from the curated Keto Friendly Foods collection — the hand-picked staples — then come back for the full ranking.