Free Float Calculator

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Free float

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Free float Percentage

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Table of Contents

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What is Free Float?

Free float estimates the shares of a company that are available for ordinary public trading. This calculator subtracts restricted shares and closely held shares from total outstanding shares, then reports both the remaining share count and its percentage of outstanding shares. Investors may use the figure to understand the portion of equity that can potentially circulate in the market.

“Free float” is not defined identically by every exchange or index provider. Strategic holdings, government stakes, employee holdings, controlling shareholders, lockups, and minimum ownership thresholds may be treated differently. Use the categories in this page for a simple estimate, and consult the relevant methodology when reproducing an official index float factor.

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How to Use This Calculator

  1. Choose one company and one effective date. Share counts change after issuance, repurchases, conversions, and corporate actions.
  2. Enter total shares outstanding, excluding treasury shares if the source’s outstanding figure already excludes them.
  3. Enter restricted shares that cannot currently trade freely under the definition being used.
  4. Enter closely held shares owned by insiders, founders, controlling families, governments, or strategic holders that you intend to exclude.
  5. Check that the two excluded categories do not overlap. The calculator subtracts both, so duplicated shares would be removed twice.
  6. Calculate to see the float count and float percentage.

All three inputs must use the same scale. You may enter shares, thousands, or millions as long as every count uses that same scale; the percentage is unchanged.

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Formula Used

Free-float shares = outstanding shares − restricted shares − closely held shares

Free-float percentage = free-float shares ÷ outstanding shares × 100

The calculator requires outstanding shares greater than zero and rejects excluded shares whose combined total exceeds outstanding shares. This arithmetic assumes the restricted and closely held categories are separate.

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Variables Explained

Free-float calculation terms
TermMeaning in this estimateData check
Outstanding sharesIssued shares currently held by investors, usually excluding treasury shares.Use one date and one share class scope.
Restricted sharesShares subject to restrictions that keep them from ordinary public trading.Do not duplicate closely held shares.
Closely held sharesInsider, controlling, government, or strategic holdings excluded under your chosen definition.Apply the relevant provider’s rules.
Free-float sharesThe remainder after both exclusions.Must fall from zero to outstanding shares.
Free-float percentageThe tradable estimate as a share of total outstanding stock.Must fall from 0% to 100%.
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Worked Example

Suppose a company has 10,000,000 outstanding shares. Of those, 1,000,000 are restricted and 2,000,000 are closely held, with no overlap:

Free float = 10,000,000 − 1,000,000 − 2,000,000 = 7,000,000 shares

Free-float percentage = 7,000,000 ÷ 10,000,000 × 100 = 70%

If the source presents counts in millions, entering 10, 1, and 2 also returns 7 in that same scale and 70%. Label the result correctly as 7 million shares rather than seven individual shares.

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Why Use This Calculator?

A 70% result means 70% of the outstanding shares remain after the entered exclusions. It does not mean that 70% trades on a particular day, nor does it guarantee liquidity. Actual trading also depends on investor willingness, volume, market makers, price, volatility, listing venue, and how widely the float is distributed.

Index providers can apply float-adjustment bands or inclusion factors instead of using the raw percentage directly. Their published value may differ because of ownership thresholds, rounding, review dates, or category rules. For investment research, record the effective date and source for each component. For index replication, use the official provider’s investability weight rather than substituting this estimate.

Float can also affect market-capitalization indexes because many providers weight constituents by shares considered available to public investors rather than by every outstanding share. A change in ownership classification can therefore change an index weight even when the company issues no new stock. This calculator reports the raw arithmetic percentage and does not round it into a provider's published band.

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Common Mistakes

    • Using issued shares when the intended denominator is shares outstanding.
    • Subtracting treasury shares again even though the outstanding count already excludes them.
    • Counting the same insider shares as both restricted and closely held.
    • Mixing counts from different reporting dates or share classes.
    • Combining raw shares with figures stated in thousands or millions.
    • Assuming every large holding is excluded under every index methodology.
    • Treating free-float percentage as a direct measure of daily volume or market liquidity.
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Frequently Asked Questions

Is free float the same as shares outstanding?

No. Shares outstanding are the starting total. Free float removes the restricted and closely held categories entered in the calculator.

Are treasury shares part of free float?

Treasury shares are generally not outstanding. If your outstanding-share source already excludes them, do not subtract them again.

Can I enter values in millions?

Yes, provided all three share counts use millions. The resulting count remains in millions and the percentage is unaffected.

Does a high free-float percentage guarantee liquidity?

No. Float can influence tradable supply, but trading volume, ownership concentration, market conditions, and demand also matter.

Why does an index provider show another percentage?

Providers use their own exclusion categories, thresholds, review dates, adjustment bands, and rounding rules. Follow that provider’s current methodology for an official value.

How should overlapping holdings be handled?

Classify each excluded share once. If restricted shares are also insider-held, separate the categories or remove the overlap before entering totals.

When should the calculation be updated?

Update it after new share issuance, buybacks, lockup changes, insider transactions, conversions, or a newer ownership filing changes an input.

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Sources & References

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