Stock Valuation Studio
LiveAutomatic stock valuation in your browser: enter one ticker for four valuation methods, a verdict with its margin of safety, and risk measures, plus a verdict board for lists and a tracker that flags stocks at your buy price.
Analysis Studio
LiveAdvanced analytics, right in your browser. Free to Use on Your Own Data; Exports and Advanced Features: $299 per year.
SAE Studio
Available soonSmall Area Estimation (SAE), Without Writing Code. SAE Studio fits Fay-Herriot models and runs diagnostics on every fit. Free to Use on Your Own Data; Exports and Advanced Features: $149 per year.
Crypto Studio
LiveValue, signals, and risk for crypto.
Free calculators
Every tool runs entirely in your browser. Your numbers never leave your device. Each one states its assumptions and interprets the result in practical terms, because a number without context is how bad decisions happen.
Stock Valuation Studio
Automatic stock valuation in your browser: enter a ticker for four valuation methods, a verdict with a margin of safety, risk measures, a verdict board, and a buy-price tracker. All Features: 100% Free.
Open tool →LiveAnalysis Studio
Advanced analytics, right in your browser.
Open tool →Available SoonSAE Studio
Small area estimation in your browser: Fay-Herriot model estimates from your own survey file. Free to Use on Your Own Data; Exports and Advanced Features: $149 per year.
Open tool →LiveCrypto Studio
Value, signals, and risk for crypto. All Features: 100% Free.
Open tool →StatisticsA/B Test Calculator and Analyzer
Full experiment analysis: sample-ratio mismatch check, Newcombe intervals, CUPED, and a Bayesian summary.
Open tool →StatisticsA/B test significance
Two-sample proportion z-test with p-value, confidence interval, and a practical-significance flag.
Open tool →StatisticsChi-Square and Crosstab Calculator
Crosstabs with Pearson chi-square, Fisher exact tests, Cramér V, and odds ratios.
Open tool →StatisticsCluster sample size
How many clusters to sample given the intraclass correlation.
Open tool →FinanceCost basis: new purchase
Your new average cost per share after buying more of a position.
Open tool →StatisticsCronbach's Alpha and Scale Reliability Calculator
Alpha and omega with confidence intervals, item statistics, and alpha if item deleted.
Open tool →StatisticsDesign weights
Nonresponse-adjusted weights with ready-to-paste SPSS syntax.
Open tool →FinanceDiscounted Cash Flow (DCF) Calculator
Value any US stock: ten projected years, a terminal value, and a clear verdict.
Open tool →FinanceDividend Discount Model Calculator
Value a dividend payer three ways: Gordon growth, two-stage, and H-model.
Open tool →FinanceGraham Number Calculator
The Graham number and the Graham formula for any stock, side by side.
Open tool →StatisticsKaplan-Meier Survival Curve Calculator
Survival curves with at-risk tables, median survival, log-rank tests, and Cox models.
Open tool →StatisticsLinear Regression Calculator
Multiple regression with interactions, hierarchical blocks, and robust standard errors.
Open tool →StatisticsLogistic Regression Calculator
Logistic regression with odds ratios, marginal effects, AUC, and calibration checks.
Open tool →StatisticsMargin of error (FPC)
Survey margin of error with the finite population correction, corrected and explained.
Open tool →FinanceMargin of Safety Calculator
Turn any fair value into a buy price at your required margin.
Open tool →FinanceOptions payoff visualizer
See exactly what long calls, long puts, and covered calls pay at expiry.
Open tool →FinancePeter Lynch Fair Value Calculator
Lynch's fair value rule for any stock: earnings times growth, plus yield.
Open tool →StatisticsPoisson Regression Calculator
Poisson and negative binomial regression for count outcomes, with exposure offsets.
Open tool →FinancePortfolio rebalance
Dollar targets and buy/sell amounts to restore target weights.
Open tool →FinancePosition size (Kelly)
Full Kelly, half-Kelly, and quarter-Kelly with an honest drawdown warning.
Open tool →StatisticsPower analysis (t-test)
Find the sample size you need for a two-sample t-test, with an effect-size slider.
Open tool →FinanceRecurring investment projector
Project contributions from a weekly investing schedule over any date range.
Open tool →FinanceReverse DCF Calculator
Work backwards from the price to the growth rate it already assumes.
Open tool →StatisticsSample Size and Power Calculator
Sample size, power, or the smallest detectable effect for t tests, ANOVA, regression, and surveys.
Open tool →StatisticsSample size calculator
Two-proportion sample size with power input, dropout adjustment, and subgroup warnings.
Open tool →StatisticsSample size: one proportion
Cochran sample size with FPC, design effect, and response-rate adjustment.
Open tool →FinanceShares for target cost basis
How many shares to buy so your cost basis hits your target.
Open tool →StatisticsStratum allocation
Allocate completes across strata with priority weights and oversampling.
Open tool →StatisticsSurvey Weighting and Raking Calculator
Build survey weights step by step: base weights, nonresponse adjustment, raking, and trimming.
Open tool →StatisticsT-Test and ANOVA Calculator
One-sample, two-sample, and paired t tests, plus one-way ANOVA with effect sizes.
Open tool →FinanceWACC Calculator: Cost of Capital
Cost of capital for any stock: beta, cost of equity, and after-tax cost of debt.
Open tool →StatisticsWhich test do I need?
Answer three to four questions and get the right statistical test for your data.
Open tool →The Investor Stats Cheat Sheet
A free three-page PDF: breakeven win rates, stop-loss sizing, volatility drag, reverse valuation, and how to tell a real track record from noise. Plus new tools as they ship.