Quick answer

At current 2026 Roblox buy rates, 500,000 Robux is worth roughly £4,844 if you were purchasing it directly from Roblox. If you’re looking at third‑party “cash value” estimates (what people loosely say 1 Robux is “worth” in real money), some calculators put it closer to £1,500.

The big difference comes from what you mean by “in pounds”:

  • Buying Robux from Roblox (official price) → higher cost in GBP
  • Estimated resale / “cash” value (unofficial, not endorsed by Roblox) → lower GBP figure

How the £4,844 figure is calculated (official buy rate)

One 2026-focused Robux-to-GBP calculator uses a buy rate of 0.009688 GBP per Robux , derived from Roblox’s USD pricing and a USD/GBP conversion.

Using that rate:

500,000 Robux×0.009688 GBP/Robux≈4,844 GBP500{,}000\text{ Robux}\times 0.009688\text{ GBP/Robux}\approx 4{,}844\text{ GBP}500,000 Robux×0.009688 GBP/Robux≈4,844 GBP

That same source shows close reference points:

  • 100,000 Robux → £968.80
  • 1,000,000 Robux → £9,688.00

So 500,000 sits right in the middle at about £4,844.

Why some sites say around £1,500 instead

Other converters use a different assumption: they treat 1 Robux ≈ £0.0030 as an “estimated value” based on Roblox pricing tiers and bonus Robux, not the strict per‑unit buy price.

With that logic:

  • 100,000 Robux → £300
  • 500,000 Robux → £1,500 (simply 5 × £300)

This is more of a “what is this stash loosely worth in real money?” perspective, often used by players talking informally, not the actual amount you’d pay Roblox to buy that much.

Which number should you use?

  • If you’re asking “How much would it cost me in pounds to buy 500k Robux?”
    → Use the ~£4,800–£4,900 range (official buy-rate logic).
  • If you’re asking “What’s 500k Robux roughly worth in pounds if someone values it like cash?”
    → You’ll often see figures around £1,500 based on the £0.003/Robux estimate.

Roblox doesn’t publish an official GBP “cash value” for Robux, and selling Robux for real money outside Roblox is against their terms, so all “cash value” numbers are unofficial approximations used in communities and calculators.

Mini reference table (approximate)

Robux amount| Approx. GBP (buy-rate, 2026)| Approx. GBP (£0.003/Robux estimate)
---|---|---
100,000| £968.80| £300
500,000| £4,844| £1,500
1,000,000| £9,688.00| £3,000

(First column uses the 0.009688 GBP/Robux 2026 buy rate; second uses the £0.003/Robux community estimate.)

TL;DR:

  • To buy 500,000 Robux from Roblox: about £4,844.
  • As a rough “cash value” estimate people use online: about £1,500.

Information gathered from public forums or data available on the internet and portrayed here.