if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); Free Co-Founder Equity Split Calculator | FounderMath 2026 if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");

Co-Founder Equity Split Calculator

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Stop arguing about who gets what. Rate each founder's contributions and get a fair, data-driven equity split in 2 minutes.

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if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
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if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
Step 1
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Add 2-5 founders (start with 2)
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Step 2
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
Rate each founder on 5 dimensions (idea, tech, biz, time, capital)
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Step 3
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See the fair equity split recommendation
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
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if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); Founders if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
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if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
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if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
Dimension Weights
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Adjust how important each factor is (total must = 100).

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if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
Share
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if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
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if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");

Recommended Equity Split

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Based on each founder's weighted contributions across all dimensions.

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if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
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Detailed Breakdown

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Each founder's score by dimension and their resulting equity share.

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if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");

Get weekly founder insights

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Equity breakdowns, fundraising math, and calculator tips. No spam.

if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");

Related Calculators

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Explore more tools built for startup founders

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if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");

Equity Dilution Calculator

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See how your ownership changes across funding rounds

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Runway Calculator

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Calculate how many months of runway you have left

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SAFE Note Calculator

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Model your SAFE note conversion and dilution impact

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Vesting Schedule Calculator

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Visualize your equity vesting schedule and cliffs

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Unit Economics Calculator

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Analyze your CAC, LTV, and payback period

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Cap Table Builder

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Build and visualize your startup's cap table

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Equity Offer Quiz

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Take our 2-minute quiz to evaluate your equity offer

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if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");
if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split"); if (window.FMUsagePrompt) FMUsagePrompt.trackUse("equity_split");