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Founder toolkit

The master startup calculator.

Every founder number in one place. Fill in what you know, leave the rest, and watch the full dashboard update live as you type. Nothing is stored or sent anywhere.

🛫 Cash & burn

Runway, burn rate and break-even.

Cash in bank

Net monthly burn

Monthly revenue

Monthly spend

Fixed costs / month

Avg price / unit

Variable cost / unit

📊 Unit economics

CAC, LTV, payback and margin.

Sales & marketing / month

New customers / month

Revenue / customer / mo

Gross margin

Monthly churn

📈 Growth & retention

MRR, Rule of 40, NRR and valuation.

Current MRR

MRR growth / month

Revenue growth (YoY)

Profit margin

Expansion MRR / mo

Contraction + churn / mo

Valuation multiple (x ARR)

🤝 Fundraising & equity

Dilution, SAFE, ESOP and convertible note.

Your ownership now

Round size (raise)

Pre-money valuation

New option pool

SAFE investment

SAFE valuation cap

SAFE discount

Note interest / yr

Note term

yrs

ESOP grant to model

Tip: leave a field at zero to skip a result. Everything updates as you type.

Your results

All live. Read each card for the plain-language meaning.

🛫 Runway

–

🔥 Net burn

–

Gross burn –

⚖️ Break-even

–

Revenue needed –

💵 Contribution / unit

–

Price minus variable cost

🎯 CAC

–

Cost to win one customer

💎 LTV

–

Lifetime value (gross profit)

⚖️ LTV : CAC

–

3:1 or higher is healthy

⏱️ CAC payback

–

Months to earn CAC back

📈 MRR in 12 mo

–

Projected ARR –

🪜 Rule of 40

–

Growth plus margin

🔁 Net revenue retention

–

Gross retention –

🏷️ Valuation estimate

–

Based on ARR multiple

📉 Dilution this round

–

Your stake after –

📝 SAFE conversion

–

Ownership the SAFE converts into

📜 Convertible note

–

Converts via –

👥 ESOP grant value

–

Share of the option pool

A quick, honest note: this calculator gives estimates to help you think, not financial, legal or investment advice. Real funding terms, valuations and tax outcomes depend on your specific documents and circumstances. Want the concepts behind each number? See the glossary, the blog, and the IP & Legal hub for the paperwork behind a round.