LeoCalculator
More than just a calculator: every result comes with the full picture, so you can decide with confidence.
54 free calculators and counting
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Latest Calculators
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Burn Rate Calculator
Calculate cash burn rate, net burn, and cash runway from your operating cash flows or start/end cash balances. A free burn rate calculator for startups and businesses.
Finance -
Germany Income Tax Calculator 2026
Calculate German income tax, solidarity surcharge, church tax and social contributions. Estimate your net salary, Brutto-Netto pay and self-employed taxes for 2026.
Finance -
Ireland Income Tax Calculator 2027
Calculate your Irish take-home pay for 2027. Estimate income tax, PAYE tax credits, USC, PRSI and self-employed tax with our Ireland salary calculator.
Finance -
Australia Income Tax Calculator 2026-2027
Calculate Australian income tax, Medicare levy, HELP repayments and take-home pay for the 2026-2027 financial year. See tax rates, taxable income and net pay.
Finance -
UK Income Tax Calculator 2026-2027
Calculate UK Income Tax, National Insurance, student loan repayments, pension contributions, and take-home pay for the 2026-2027 tax year across England, Scotland, Wales, and Northern Ireland.
Finance -
US Income Tax Calculator 2026
Calculate US federal income tax, state tax, FICA, deductions, credits, effective rate, and take-home salary for tax year 2026.
Finance -
Z-Score Calculator
Calculate z-scores, standard scores, percentiles, probabilities, and Z-table values using the standard normal distribution with step-by-step calculations.
Statistics -
Confidence Interval Calculator
Calculate 90%, 95%, and 99% confidence intervals for means, proportions, differences, and variances with critical values, margin of error, and calculation steps.
Statistics -
Effect Size Calculator
Calculate effect size including Cohen's d, Hedges' g, Glass's Δ, effect-size r, η², Cohen's f, CLES, and binary effect measures from raw or summary data.
Statistics -
Wilcoxon Signed-Rank Test Calculator
Calculate the Wilcoxon signed-rank test for paired samples with signed ranks, W statistic, exact or normal-approximation p-value, z statistic, effect size, and detailed calculation steps.
Statistics -
T-Test Calculator
Calculate one-sample, two-sample Student's t, Welch's, and paired t-tests from raw data or summary statistics. Get t statistic, degrees of freedom, p-value, critical t, confidence interval, and Cohen's d.
Statistics -
Student's t-Distribution Calculator
Calculate Student's t-distribution PDF, CDF, tail probabilities, critical t values, quantiles, and t-table values for any degrees of freedom. Not a t-test.
Statistics