Bitcoin to IBIT Shares: How to Convert BTC to iShares Bitcoin Trust
The complete guide to converting Bitcoin amounts into IBIT share equivalents — formula, worked examples, and why the ratio changes daily.
The Formula
Converting Bitcoin to IBIT shares requires one number: the BTC-per-share ratio. This ratio tells you how much Bitcoin backs each IBIT share. As of August 2026, the ratio is approximately 0.0005662.
IBIT shares = BTC amount ÷ BTC-per-share ratio
Or equivalently: IBIT shares = BTC amount × (1 ÷ ratio) = BTC amount × shares-per-BTC
With a ratio of 0.0005662, the inverse is approximately 1,766 — meaning one Bitcoin equals about 1,766 IBIT shares.
Worked Examples
0.1 BTC to IBIT:
0.1 ÷ 0.0005662 = ~177 shares
0.5 BTC to IBIT:
0.5 ÷ 0.0005662 = ~883 shares
1 BTC to IBIT:
1 ÷ 0.0005662 = ~1,766 shares
5 BTC to IBIT:
5 ÷ 0.0005662 = ~8,831 shares
Why the Ratio Changes
IBIT charges a 0.25% annual expense ratio. BlackRock deducts this fee by selling a tiny amount of the fund's Bitcoin each day. That means the BTC-per-share ratio decreases slightly every day, and the number of shares needed to represent one Bitcoin increases over time.
At launch in January 2024, the ratio was higher. Over a year, the 0.25% fee reduces it by approximately that same percentage. This is called fee drag. For the full explanation, see our IBIT expense ratio and fee drag guide.
Bitcoin to IBIT: Why Choose the ETF?
If you already own Bitcoin, you might wonder why anyone would convert to IBIT shares. The answer is usually about account structure:
- Tax-advantaged accounts — IRAs, 401(k)s, and HSAs can hold IBIT but not Bitcoin directly.
- Simplicity — no crypto wallet, no private keys, no exchange account. One brokerage holds everything.
- Estate planning — IBIT shares pass through standard brokerage inheritance processes with no key-management risk.
The tradeoff is the 0.25% annual fee and the fact that you don't directly own Bitcoin. For a full comparison, see IBIT vs. buying Bitcoin directly.
Bitcoin to Other ETF Shares
The same formula works for any spot Bitcoin ETF — just use that fund's BTC-per-share ratio. Each ETF has a different ratio based on its share structure and fee history:
| ETF | Approx. Ratio | ≈ Shares per 1 BTC |
|---|---|---|
| IBIT | 0.0005662 | 1,766 |
| FBTC | 0.0008702 | 1,149 |
| GBTC | 0.0007740 | 1,292 |
| BTC (Mini) | 0.0004421 | 2,262 |
| BITB | 0.0005427 | 1,843 |
| ARKB | 0.0003316 | 3,016 |
Ratios are approximate and change daily. Use the live calculator for exact current values.