![Prosper [OLD]](/icons/pros.png){kind=icon}
Convert PROSon Polygon to B
Swap Prosper [OLD] (PROS) on Polygon to BUILDon (B) at the best cross-chain rate. SwitchFi routes your PROS → B exchange across the top DEXs and bridges and settles straight from your wallet — non-custodial, no account, no sign-up.
PROS to B market data
| Metric | PROS · Polygon | B |
|---|---|---|
| Price | $0.04293 | $0.1355 |
| Market cap | $2.21M | $134.95M |
| 24h volume | $83 | $91.81M |
| 24h change | -0.38% | -46.89% |
| 7d change | -1.04% | -35.79% |
| 24h high / low | $0.04336 / $0.04281 | $0.255 / $0.1007 |
| All-time high | $9.61 | $0.7635 |
| Market cap rank | #2152 | #219 |
What is the PROS to B exchange rate?
At the current market price, 1 PROS ≈ 0.31692945 B, and 1 B ≈ 3.1553 PROS. The rate moves with the market; the exact amount you receive is quoted from live liquidity in your wallet before you sign.
BUILDon carries the larger market value of the two — $134.95M versus $2.21M for Prosper [OLD]. On the overall leaderboard they sit at #2152 and #219 respectively. Day-on-day, PROS printed -0.38% and B printed -46.89%, meaning the exchange rate between them has moved in PROS's favour. Zooming out to a week, PROS has moved -1.04% while B has moved -35.79%. With $83 and $91.81M in respective daily volume, neither side of a PROS→B swap struggles for depth. PROS currently trades 99.6% below its all-time high, while B sits 82.3% under its own peak.
PROS to B converter & price calculator
Indicative, based on current market prices. Get a live quote in the swap.
PROS / B conversion tables
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Live quote, net of DEX/bridge/gas fees. The final amount is confirmed in your wallet at execution.
Indicative estimate — the exact amount is confirmed in your wallet at execution.
About Prosper [OLD] and BUILDon
Prosper [OLD] (PROS) is the #2152 cryptocurrency by market cap, worth $2.21M in aggregate. The price sits 99.6% under the record high of $9.61. Supply-wise, 51% of the 100.00M PROS maximum (51.39M PROS) is on the market today. Over the last 7 days PROS is -1.04%, and +386.63% across 30 days. Daily turnover comes to $83.
BUILDon (B) ranks #219 by market capitalisation at $134.95M. Compared with its $0.7635 all-time peak, it currently trades 82.3% lower. Of a maximum supply of 1.00B B, 1.00B B (100%) is already in circulation. Recent performance reads -35.79% over 7 days and -43.14% over the past month for B. Around $91.81M of B changes hands every 24 hours.
How to convert PROS to B
- 1 Enter the amount of PROS on Polygon you want to convert — the swap widget on this page is prefilled with the PROS → B pair.
- 2 Connect a compatible wallet: MetaMask, OKX, Trust Wallet, TokenPocket, TronLink, UniSat, Phantom and others.
- 3 Review the quoted route — the estimated and minimum amount of B you will receive, plus network, DEX and bridge fees, are all shown before you sign.
- 4 Confirm the transaction in your wallet and track the swap on the My transactions page until the funds arrive.
Other options to exchange B
Convert any other cryptocurrency from PROS
PROSPolygon → BTC
Bitcoin
PROSPolygon → ETH
Ethereum
PROSPolygon → USDTEthereum
Tether
PROSPolygon → BNB
BNB
PROSPolygon → USDCEthereum
USDC
PROSPolygon → XRP
XRP
PROSPolygon → SOL
Solana
PROSPolygon → TRX
TRON
PROSPolygon → FIGR_HELOC
Figure Heloc
PROSPolygon → HYPE
Hyperliquid
PROSPolygon → DOGE
Dogecoin
PROSPolygon → USDSEthereum
USDS
PROS to B FAQ
What is the PROS to B exchange rate?
1 PROS is worth roughly 0.31692945 B at the moment (inverted: 1 B ≈ 3.1553 PROS). This moves with the market; your wallet shows the exact executable amount before signing.
How to swap, exchange or convert PROS to B on SwitchFi?
Type in how much PROS you're converting, connect a wallet, check the quoted PROS→B route and confirm in the wallet. The router compares DEX and bridge paths and settles without ever taking custody.
Is the PROS to B swap instant?
If both assets live on the same chain the swap confirms within seconds. Cross-chain conversions add a few minutes of bridge confirmation time, with live status tracking throughout.
Are there fees to convert PROS to B?
SwitchFi shows the network, DEX and bridge fees up front in the quote. You always see the minimum you'll receive before confirming — there are no hidden custody fees because you never give up control of your funds.
Do I need an account to exchange PROS for B?
No account is needed. You connect a wallet, approve the swap and receive the funds directly — there is no registration or KYC step for on-chain swaps.
Market data by CoinGecko, cached server-side. Prices are informational — the exact swap rate is quoted at execution time.