cash ÷ net burn = runway
Startup Runway Calculator
Calculate your startup's runway and burn rate: enter cash, revenue, expenses and growth to see months left, your zero-cash date and break-even month.
Startup Dilution Calculator
See how much of your company you keep after each round. Add priced rounds with their valuation, investment and option pool target; the cap table recalculates instantly.
- Founders after all rounds
- 50.6%
- Founder dilution
- 49.4%
- Post-money valuation
- €8,000,000
- Value of founders' stake
- €4,044,444
- Effective pre-money
- €5,800,000Pre-money minus the value of the new pool shares: what existing holders are really paid on.
Ownership after each round
| Holder | Today | Pre-seed | Seed |
|---|---|---|---|
| Founders | 100.0% | 70.0% | 50.6% |
| Option pool | 0.0% | 10.0% | 10.0% |
| Pre-seed investors | – | 20.0% | 14.4% |
| Seed investors | – | – | 25.0% |
Runs entirely in your browser. No data is sent to a server.
How it works
- Enter the founders' combined ownership today and any option pool that already exists.
- For each round, enter the pre-money valuation, the amount invested and the option pool size investors expect after the round.
- Add a second or third round to model a typical path from pre-seed to Series A.
- Compare the ownership table and bars. The effective pre-money shows how much the pool top-up lowers the valuation existing holders really receive.
FAQ
How is dilution calculated in a funding round?
New investors receive investment ÷ post-money valuation of the company. Every existing holder is diluted by that percentage, and further if an option pool is created or enlarged before the round.
What is the option pool shuffle?
Investors often ask for the option pool to be topped up before their money comes in. The new pool shares then dilute only the existing shareholders, which lowers the effective pre-money valuation.
How much dilution is normal per round?
Often-quoted rules of thumb put a seed or Series A round at roughly 15 to 25% dilution, but it depends heavily on market, traction and round size. Treat any range as orientation, not a target.
Does this calculator handle SAFEs and convertible notes?
It models priced rounds. To approximate a SAFE, enter it as part of the next priced round's investment at the valuation where it converts; exact conversion depends on cap, discount and terms.
Is this legal or financial advice?
No. It is a simplified model for understanding the mechanics. For real term sheets, check the numbers with a lawyer or financial adviser.