Business
Break-Even Calculator
Calculate break-even units and revenue with fixed and variable cost inputs.
Use-Case Landing
Startup Unit Economics
Build, stress-test, and communicate your core economics in one workflow.
Why this stack
Start with break-even and margin math, then model churn, runway, and growth scenarios before planning targets.
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.