Free Float Calculator — Shares & Market Cap
Free float is the proportion of a company's shares that are freely available for trading by public investors. Enter total shares outstanding and each restricted category's percentage to find the free float, tradeable share count, and — optionally — the float market capitalisation.
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Percentage of total shares freely tradeable by public investors
50 %
Free FloatFree float
50%
Promoter / founder
45%
Strategic institutional
5%
- 1
Sum of restricted holdings
45 + 5 + 0 + 0 = 50 %Promoter, strategic institutional, government, and other locked-in percentages combined. - 2
Free float shares
100,000,000 × (100 − 50) ÷ 100 = 50,000,000 - 3
Free float percentage
100 − 50 = 50
How does this calculator work?
Free float = total shares minus all restricted/locked-in holdings (promoters, government, strategic investors, lock-ups), expressed as a percentage. A higher free float means more liquidity and usually greater index inclusion weight. Float market cap = free float shares × share price.
Formula
How this is calculated
Not all of a listed company's shares are actually tradeable on the open market. Promoters (founders and controlling families), strategic institutional investors, government or state entities, and employees under lock-up agreements hold their shares for strategic reasons and rarely trade. The shares they hold are called restricted shares or closely held shares. Subtracting their combined percentage from 100 % gives the free float — the shares genuinely available for price discovery in the market.
Free float matters because stock indices, including MSCI and FTSE benchmarks, weight companies by float-adjusted market cap rather than total market cap. A company with a large promoter stake has a smaller float, which reduces its index weight and the amount of passive fund buying it attracts. Stock exchanges also use free float thresholds as listing eligibility criteria.
For traders and analysts, a low free float can mean higher volatility — a small number of tradeable shares means large orders can move the price significantly. Stocks with a float below 5–10 % of shares outstanding are considered very tightly held. Float market cap (free float shares × price) gives the true size of the tradeable stock pool.
Frequently asked questions
Most major indices require a minimum free float of 15–25 % for inclusion. Large liquid stocks typically have free floats above 50 %. A free float below 10 % is considered tightly held and can signal illiquidity or governance concentration risk.
Global indices such as MSCI ACWI and FTSE All-World use float-adjusted market cap. A company with a 40 % free float and total market cap of $10 bn receives an index weight based on a $4 bn float cap, not $10 bn — so only a fraction of passive fund inflows go to buying its shares.
No. Treasury shares (shares repurchased and held by the company itself) are excluded from free float because they cannot be traded. Include them in the "Other locked-in shares" field, or reduce total shares outstanding to reflect only issued and outstanding shares.
Also known as
TG we-Calculate Editorial Team. (2026). Free Float Calculator — Shares & Market Cap [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/free-float-calculator
TG we-Calculate Editorial Team. "Free Float Calculator — Shares & Market Cap." TG we-Calculate. 2026. https://we-calculate.com/calculator/free-float-calculator.
TG we-Calculate Editorial Team, "Free Float Calculator — Shares & Market Cap," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/free-float-calculator
@misc{wecalculate_free_float_calculator, title = {Free Float Calculator — Shares & Market Cap}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/free-float-calculator}}, year = {2026}, note = {TG we-Calculate} }
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