Y Combinator Calculator

An online tool to evaluate startup funding scenarios, calculate ownership dilution, and determine valuation metrics for founders and investors.

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17,600+

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< 15ms

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100%

Client-Side Privacy

4.9 / 5.0

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About This Tool

The YC Calculator is a powerful online tool tailored for startup founders, investors, and advisors to assess funding rounds, equity distribution, and company valuation.
It allows users to input key financial parameters such as pre-money valuation, investment amount, options pool, and ownership percentages. The calculator performs precise operations to determine post-money valuation, ownership dilution, and investor equity shares.
Designed for accuracy and user-friendliness, it supports multiple funding scenarios, making it ideal for planning early-stage investments or analyzing potential funding strategies.
Whether you're a founder seeking funding, an investor evaluating opportunities, or a consultant advising startups, this tool helps visualize complex funding impacts in real time. It emphasizes clarity, flexibility, and practicality, providing instant calculations and downloadable reports to support strategic decisions.

Save your calculation history with a free account

How to Use

Enter your company's valuation and funding details.
Specify ownership percentages, funding amounts, and option pool sizes.
Click 'Calculate' to see detailed results and dilution impact.
Explore multiple scenarios or export summaries as needed.

Frequently Asked Questions

Find Quick Answers

How does the YC calculator determine dilution?

It calculates dilution by considering total funding, ownership percentages before and after financing, and options pool adjustments, providing an accurate picture of ownership changes.

Can I compare multiple funding scenarios?

Yes, the tool supports scenario comparisons with report exports, enabling users to evaluate different funding strategies side-by-side.

Is the data I input private?

Absolutely. All data is processed locally or via secure HTTPS connections, and no data is publicly stored unless exported or explicitly saved.

Does the tool support multi-round funding analysis?

Yes, users can input multiple rounds with different parameters to simulate cumulative dilution and valuation changes over time.

Is the calculator compatible with mobile devices?

Yes, it's fully responsive and optimized for both desktop and mobile browsers for easy access on the go.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

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