#905 · Startup Tool

SAFE Conversion Calculator

Model how a SAFE converts during a priced round. Enter SAFE amount, valuation cap, discount, and next round price to estimate conversion price, shares issued, and investor ownership.

Calculator

Startup inputs
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How to use this calculator

  • Enter the financing or ownership assumptions for this startup scenario.
  • Use the calculator to estimate ownership, dilution, valuation, or conversion impact.
  • Review the health score and compare the result with normal fundraising ranges.
  • Use the result as a decision-support estimate before reviewing legal documents.

What the result means

The result shows the financing impact on ownership, valuation, conversion, or dilution. A stronger result protects founder ownership while preserving enough incentive for investors and employees.

Conversion Price = lower of cap price and discounted financing price; SAFE Shares = SAFE Amount / Conversion Price

This estimate is educational and should not replace legal, tax, or fundraising advice. Real term sheets may include preferences, pro rata rights, participation, vesting, and other provisions.

Example calculation

A $100,000 SAFE with a 20% discount and $2 next-round price converts at $1.60 unless the valuation cap creates a lower price.

Tips for better results

  • Model conservative and aggressive cases before signing terms.
  • Review fully diluted ownership, not only headline ownership.
  • Check how the result affects future fundraising rounds.
  • Document assumptions clearly before discussing with investors.

FAQ

How does a SAFE convert into shares during a priced round?

A SAFE usually converts at the better investor price created by either the valuation cap or the discount during the next qualified financing.

What is better for a SAFE investor, valuation cap or discount?

The better term is whichever produces the lower conversion price, because a lower price gives the investor more shares.

How do I calculate SAFE ownership after conversion?

Divide SAFE conversion shares by the post-conversion fully diluted share count, including new round shares and option pool if applicable.

What happens when the SAFE valuation cap is lower than the priced round valuation?

The valuation cap usually produces a lower conversion price, giving SAFE holders more shares than the new priced-round investors.

Can a SAFE cause unexpected founder dilution?

Yes. Multiple SAFEs, low valuation caps, discounts, and option pool increases can create significant dilution at conversion.

Startup decision modules

ModuleWhat it shows
Main ResultPrimary startup finance output for this calculator.
Ownership ImpactHow the scenario changes equity or valuation.
Health ScorePractical quality score from the result.
Decision SignalRecommended action based on the result.

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