You don't need to pay $100+/month to understand your startup's equity. FounderMath gives you 9 free calculators that cover what early-stage founders and employees actually need.
How FounderMath stacks up against the most popular cap table and equity tools.
| Feature | FounderMath | Carta | Pulley | Slicing Pie |
|---|---|---|---|---|
| Price | Free ($19/mo Pro) | $100+/mo | $100+/mo | $19/mo |
| Equity Dilution Calculator | ✓ | ✗ | ✗ | ✗ |
| SAFE Note Calculator | ✓ | ✗ | ✗ | ✗ |
| Runway Calculator | ✓ | ✗ | ✗ | ✗ |
| Cap Table Builder | ✓ | ✓ | ✓ | ✗ |
| Vesting Schedule Visualizer | ✓ | ✓ | ✓ | ✗ |
| CAC/LTV Calculator | ✓ | ✗ | ✗ | ✗ |
| Cofounder Equity Split | ✓ | ✗ | ✗ | ✓ |
| Startup Valuation Calculator | ✓ | ✗ | ✗ | ✗ |
| Stock Option Calculator | ✓ | ✗ | ✗ | ✗ |
| Signup Required | No | Yes | Yes | Yes |
| Interactive Visual Charts | ✓ | ✓ | ✓ | ✗ |
| Share Scenarios via URL | ✓ | ✗ | ✗ | ✗ |
| 409a Valuations | ✗ | ✓ | ✓ | ✗ |
| Legal Compliance | ✗ | ✓ | ✓ | ✗ |
The bottom line: Use FounderMath to LEARN and PLAN. Use Carta/Pulley to MANAGE and COMPLY. They serve different needs at different stages.
No signup, no credit card, no sales calls. Open a calculator and start modeling in 5 seconds.
Interactive charts that make complex equity math intuitive. See your dilution, don't just calculate it.
Share your exact calculator setup with cofounders via URL. No accounts needed — just click and see.
Pro tips, presets, and detailed breakdowns help you actually understand the math, not just get a number.
Dilution, SAFE notes, runway, cap table, vesting, unit economics, equity split, valuation, and stock options — all free.
All 9 calculators work for free, forever. Pro adds saving and export — the core tools are always free.
No signup required. Pick a calculator and start modeling your startup's equity in 5 seconds.
Open Equity Dilution Calculator →