The bundles and the math
The long-running US web store lineup is 400 Robux for $4.99, 800 for $9.99, 1,700 for $19.99, 4,500 for $49.99 and 10,000 for $99.99. What matters is not the sticker price but dollars per Robux, and that number improves sharply with size: the smallest pack costs about $0.01247 per Robux, while the 10,000 pack drops to $0.01000 — roughly 1.2 times cheaper per unit. Premium subscribers also receive monthly Robux stipends as part of the membership, which sit outside this lineup entirely and change the calculation for anyone who plays regularly.
| Bundle | Price (USD) | Dollars per Robux |
|---|---|---|
| 400 Robux | $4.99 | $0.01247 |
| 800 Robux | $9.99 | $0.01249 |
| 1,700 Robux | $19.99 | $0.01176 |
| 4,500 Robux | $49.99 | $0.01111 |
| 10,000 Robux | $99.99 | $0.01000 |
There is one wrinkle worth knowing, because it breaks the usual rule of thumb. The 400 pack ($0.01247) is very slightly cheaper per Robux than the 800 pack ($0.01249) — the two are effectively identical, and going from 400 to 800 buys you nothing on unit price. The real savings start at 1,700 and only become decisive at 10,000. So “always buy the biggest pack” is good advice, but “always buy a bigger pack” is not: the step that matters is the jump to the top tier, not every step along the way.
Buying versus earning
Purchased Robux can be spent anywhere, but only earned Robux — from game passes, developer products, engagement payouts and item sales — qualifies for the DevEx cash-out program. That distinction is not a technicality, it is the whole game: a creator who buys 10,000 Robux for advertising cannot later cash those same Robux out, so their resale value is exactly $0 no matter what the exchange rate says. If your goal is spending, shop the bundle table; if your goal is income, only earned Robux counts.
The three DevEx rates, and which one applies to you
DevEx does not have one rate, it has three, and which one you get depends on when the Robux was earned and who you are. The standard rate of $0.0038 per Robux applies to Robux earned on or after 5 September 2025. Robux earned before that date converts at the older $0.0035 — now a legacy figure rather than the going price, and the single most common stale number quoted in old guides. Eligible age-verified U.S. creators aged 18 and over receive $0.0054 on qualifying spend, added on 8 June 2026. Because rates are tied to when the Robux was earned, one balance can straddle two of them, which is why the calculator treats the standard rate as the planning default and reports the legacy rate as history rather than a live option.
| Rate | Per Robux | Applies to | 30,000 Robux |
|---|---|---|---|
| Standard | $0.0038 | Robux earned on or after 5 Sep 2025 | $114.00 |
| Legacy | $0.0035 | Robux earned before 5 Sep 2025 (older rate only) | $105.00 |
| U.S. 18+ verified | $0.0054 | Age-verified U.S. creators 18 and over, qualifying spend | $162.00 |
Three worked examples
Example 1 — the cheapest way to about 9,000 Robux. Two 4,500 packs give you 9,000 Robux for $99.98. One 10,000 pack costs $99.99 — one cent more — and gives you 10,000. That is 0.01 dollars for an extra 1,000 Robux, a marginal rate of $0.0000 per Robux, roughly 1000 times better than the bundle price itself. Never buy the smaller combination when the top pack already covers the need.
Example 2 — what a R$ 100 game pass actually earns. Roblox keeps about 30% at the point of sale, so a R$ 100 pass puts R$ 70 into your balance as earned Robux — worth $0.27 at the current standard rate of $0.0038. Reaching the 30,000 Robux minimum cash-out therefore takes 429 sales (30,030 earned Robux), which is $114.11. An eligible age-verified U.S. creator aged 18 or over would see $162.16 for the same sales at the $0.0054 rate.
Example 3 — why bought Robux is not income. Buying 30,000 Robux at the top tier costs three 10,000 packs, or $299.97 — and those Robux can never be converted to cash, so their cash-out value is $0. The same 30,000 earned Robux is $114.00 at the standard rate, or $162.00 for an eligible age-verified U.S. creator aged 18 and over. The gap between $299.97 spent and $114.00 received is the single most important asymmetry on this page: Robux has a buy price and a sell price, and they are not the same number.
Practical buying rules
Never buy the smallest pack twice when one larger pack covers the need — the per-unit gap is real, though as the table shows it does not open up until the upper tiers. Watch for promotional bonus packs around events, since those temporarily beat the standing lineup. Treat marketplace-limited items as separate purchases from plain Robux top-ups, because their prices float independently of the bundle schedule. And check the store at purchase time: the US lineup has been stable for years, but regional pricing and promotions shift what you actually pay.
How to work out the price per Robux yourself
The only number worth comparing is price divided by Robux, and it is worth being able to do it yourself, because promotions, regional pricing and platform fees all move the inputs. Take the sticker price in dollars and divide by the Robux in the pack: $4.99 ÷ 400 gives $0.01247, and $99.99 ÷ 10,000 gives $0.01000. Anything at or above about $0.0125 is a small-pack price; anything near $0.01 is the top tier. The same arithmetic runs in reverse for earning: multiply your earned Robux by the rate that actually applies to you, then check the result against the 30,000 minimum before assuming any of it is withdrawable.
Premium and the monthly stipend
Premium changes the comparison because it delivers Robux on a schedule rather than in a lump. A subscription pays a monthly Robux grant, so the honest way to judge it is to divide the membership cost by the Robux received and compare that figure with the bundle table — remembering that the stipend arrives whether or not you were going to buy Robux anyway, and that it comes bundled with the rest of the membership. Premium has also been associated with a better Robux-per-dollar rate on purchases, but the exact bonus depends on tier and region and has changed over time, so treat any specific figure as a store page to check rather than a number to memorise. Note too that Premium is not a cash-out requirement: it can raise your balance, but DevEx eligibility turns on earned Robux and account verification.
Three mistakes that cost real money
Buying your way up to the cash-out threshold. Purchased Robux never becomes eligible, so topping up to reach 30,000 does nothing for a payout. Comparing sticker prices instead of unit prices. A $49.99 pack is not “half” of a $99.99 pack in value; it is 4,500 Robux against 10,000, and the unit price says so. Assuming one rate covers the whole balance. Robux earned before and after 5 September 2025 convert at different rates, so a single blended estimate will be wrong at the margins. In every case the fix is the same: divide to get the unit price, then check which rate and which eligibility the Robux in front of you actually carries.
Sources and standards
Where these figures come from
Every formula on this page is implemented from the published reference material below. Bundle prices are the standard US web store lineup; DevEx rates are the current schedule, with the legacy $0.0035 rate applying only to Robux earned before 5 September 2025. Where a value depends on a regional code, the calculator lets you override it rather than assuming one jurisdiction.
- Roblox Creator Documentation — Earning on Roblox — which Robux qualifies for cash-out, the marketplace fee, and the DevEx rate and minimum request.
- Roblox Creator Documentation — Monetization — how game passes, developer products and item sales are priced and paid out.
- Roblox Creator Documentation — the engine and monetisation reference behind the pricing and payout tools.
Figures, formulas and reference tables last verified: 30 September 2026.