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Weighted Average Shares Outstanding Calculator

What do these figures come to once the work is shown?

Weighted average common shares for the year from beginning shares and up to three issuances or buybacks by month.

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  • Nothing stored or sent
  • Free, no sign-up
Your figures
Example figuresIllustrative only. Type over them with your own.
Weighted average shares
10,733,333.33
Denominator for basic EPS
Shares outstanding at year end
10,700,000.00
Event 1 weighted effect
900,000.00
Drawn to one scale
Weighted average shares10,733,333.33
Shares outstanding at year end10,700,000.00
Event 1 weighted effect900,000.00
Event 2 weighted effect-166,666.67
Event 3 weighted effect0.00
All results
MeasureResult
Weighted average shares10,733,333.33
Shares outstanding at year end10,700,000.00
Event 1 weighted effect900,000.00
Event 2 weighted effect-166,666.67
Event 3 weighted effect0.00
How this was worked out
Work shownrecomputed as you type
Weighted shares = beginning shares + sum of (shares changed x months outstanding / 12)

Illustrative arithmetic on the figures you enter. Check the result against your firm's methodology before relying on it.

The formulas

  • Weighted shares = beginning shares + sum of (shares changed x months outstanding / 12)

How it works

Basic EPS divides income by the weighted average number of common shares outstanding, not by the year-end count. Shares are weighted by the time they were outstanding. A buyback has a negative effect for the months after it.

Enter months outstanding as the months from the event to year end. Stock splits and stock dividends are not weighted by time. They are applied to all periods as if they happened at the start, so restate beginning shares first.

Illustrative figures only. Check the result against your firm's methodology before relying on it.

Common questions

How are months counted?

From the issue date to year end. Use days for more precision.

What about a stock split?

Restate all prior and current share counts for the split. Do not time-weight it.

Does treasury stock count?

Repurchased shares reduce shares outstanding from the repurchase date.

Formulas on this page are the standard definitions.

Runs in your browser. The figures you type are not sent to CORAA or stored. Check the result against your firm's methodology before relying on it.

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