Finance & Funding
Financial modeling tools to help founders understand runway, startup valuation, dilution, and venture funding tradeoffs.
Burn & Runway
See how many months of cash you have left.
ValuationSaaS Valuation
Estimate company worth via 2026 multiples.
EquityEquity Dilution
Model your ownership after a funding round.
EquityConvertible Note
Calculate SAFE or Note conversions.
ValuationBerkus Method
Pre-revenue valuation for early startups.
LoansLoan Repayment
Venture debt and monthly payment tool.
EfficiencyRule of 40
Balance growth vs. profitability.
EfficiencyBreakeven Point
When will your startup turn a profit?
Growth & Marketing
Growth engineering tools to optimize customer acquisition costs, lifetime value, virality, and marketing spend efficiency.
CAC to LTV
The ultimate marketing health metric.
LoopsViral Coefficient
Measure your K-Factor and virality.
AdsROAS Calculator
Return on ad spend for paid channels.
RetentionChurn Impact
The 12-month cost of losing users.
LoopsReferral ROI
Calculate savings vs. paid CAC.
CampaignsEmail Marketing ROI
Predict revenue from your list.
SaaS12-Mo MRR Projector
Compounding growth revenue model.
Unit EconomicsUnit Margins
Profitability per item sold.
Operations & Scaling
Operational calculators for hiring, team scaling, agency pricing, and platform-specific revenue modeling.
Startup Calculators for Founders
FounderCalculators.com is a free toolbox of practical business calculators designed for startup founders, SaaS operators, and solo entrepreneurs. Each calculator focuses on a single decision founders face when raising capital, managing cash flow, or scaling growth.
Unlike generic finance tools, our calculators are benchmarked against modern startup metrics including SaaS valuation multiples, CAC-to-LTV ratios, burn rate runway standards, and unit economics used by investors in 2026.
Use these tools for pitch preparation, internal planning, or stress-testing business assumptions before making high-stakes decisions.