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Flagship Toolkit

Startup Unit Economics Toolkit

Build, stress-test, and communicate your core economics in one workflow.

Who this toolkit is for

Start with break-even and margin math, then model churn, runway, and growth scenarios before planning targets.

Recommended workflow

  1. Start with break-even math so fixed costs, variable costs, and contribution margin are explicit.
  2. Use profit margin and churn tools to separate gross economics from retention risk.
  3. Run runway and growth scenarios before setting targets for hiring, pricing, or fundraising.
  4. Keep a conservative case beside the plan you intend to present.

Example scenario

A founder preparing an investor update can calculate break-even revenue, check margin assumptions, model churn impact, and then translate the plan into runway and growth-rate scenarios.

Tools and when to use them

Tool What it helps with When to use it
Break-Even Calculator Calculate break-even units and revenue with fixed and variable cost inputs. Use when you need the sales volume or revenue required to cover fixed and variable costs.
Profit Margin Calculator Compute profit, margin, and markup from revenue and cost. Use when pricing, cost of goods, or service delivery margin needs a quick sanity check.
Churn Impact Simulator Project customer count and MRR under churn and acquisition assumptions. Use when retention assumptions could change growth, revenue, or payback.
Cash Runway Calculator Estimate startup runway and projected cash balance over time. Use before hiring, fundraising, or cost-cutting decisions.
CAGR Calculator Calculate compound annual growth rate between two values over time. Use when summarizing growth between two points in a comparable annualized format.
Annuity Payment Calculator Calculate monthly loan payment, total paid, and interest. Use it when this workflow needs a focused finance result.
ANOVA One Way Calculator Run one-way ANOVA summary statistics for multiple groups. Use it when this workflow needs a focused statistics result.
Bayes Theorem Calculator Compute posterior probability from prior, sensitivity, and false positive rate. Use it when this workflow needs a focused statistics result.
Break-Even Analysis Calculator Calculate break-even point and contribution margin. Use it when this workflow needs a focused business result.
Compound Interest Calculator Forecast investment growth with compounding and recurring contributions. Use it when this workflow needs a focused finance result.
Confidence Interval Calculator Estimate confidence intervals from mean, standard deviation, and sample size. Use it when this workflow needs a focused statistics result.
Confidence Level Z Value Tool Convert confidence levels to z critical values and margin of error. Use it when this workflow needs a focused statistics result.

Common mistakes

Business

Break-Even Calculator

Calculate break-even units and revenue with fixed and variable cost inputs.

Business

Profit Margin Calculator

Compute profit, margin, and markup from revenue and cost.

Business

Churn Impact Simulator

Project customer count and MRR under churn and acquisition assumptions.

Finance

Cash Runway Calculator

Estimate startup runway and projected cash balance over time.

Finance

CAGR Calculator

Calculate compound annual growth rate between two values over time.

Finance

Annuity Payment Calculator

Calculate monthly loan payment, total paid, and interest.

Statistics

ANOVA One Way Calculator

Run one-way ANOVA summary statistics for multiple groups.

Statistics

Bayes Theorem Calculator

Compute posterior probability from prior, sensitivity, and false positive rate.

Business

Break-Even Analysis Calculator

Calculate break-even point and contribution margin.

Finance

Compound Interest Calculator

Forecast investment growth with compounding and recurring contributions.

Statistics

Confidence Interval Calculator

Estimate confidence intervals from mean, standard deviation, and sample size.

Statistics

Confidence Level Z Value Tool

Convert confidence levels to z critical values and margin of error.

Business

Conversion Rate Calculator

Calculate conversion rate, AOV, and revenue per visitor.

Business

Customer Lifetime Value Calculator

Calculate total customer value over their lifetime.

Business

Invoice Splitter

Split invoices by team member, project, or department with transparent math.

Finance

Mortgage Calculator

Estimate monthly mortgage payments, total paid, and interest.

Statistics

Normal Probability Calculator

Compute probability between two bounds in a normal distribution.

Statistics

One-Sample t-Test Calculator

Compute one-sample t-statistic from sample values and hypothesized mean.

Statistics

Pearson Correlation Calculator

Calculate Pearson r and R² from paired X and Y datasets.

Statistics

Poisson Probability Calculator

Calculate exact and cumulative Poisson event probabilities.

Business

Pricing Tier Designer

Model tier pricing and customer mix to forecast monthly and annual revenue.

Statistics

Relative Risk Odds Ratio Calculator

Compute RR, OR, and confidence intervals from a 2x2 contingency table.

Business

ROI Calculator

Calculate Return on Investment and annualized returns.

Statistics

Sample Size Calculator

Estimate required sample size from confidence level, margin error, and proportion.

Statistics

Chi-Square GOF Calculator

Calculate chi-square goodness-of-fit statistic from observed vs expected counts.

Business

Discount Calculator

Compute discount amount, post-discount price, and final total with tax.

Statistics

F Test Variance Calculator

Compare sample variances with F statistic and degrees of freedom.

Statistics

Geometric Mean Calculator

Find geometric mean for positive-number datasets.

Statistics

Harmonic Mean Calculator

Calculate harmonic mean for rates and ratios.

Statistics

Moving Average Calculator

Compute rolling averages over a configurable window.

Statistics

Percentile Rank Calculator

Find percentile rank of a target value within a dataset.

FAQ

What should I calculate first for startup unit economics?

Start with break-even and margin because they define whether each sale contributes enough to cover fixed costs.

Should these tools replace a financial model?

No. They are fast checks for core assumptions and scenario discussion; a full model should still handle timing, taxes, financing, and accounting detail.

Why include churn in unit economics?

Churn changes lifetime value, payback, growth, and runway, so acquisition metrics alone can make a business look healthier than it is.

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