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Based on Specialized Calculator: Statutory tax rates and market-specific defaults reflect the rules in effect as of July 2026. However, items involving individual exceptions, such as tax reductions, exemptions, temporary ownership of two homes, local ordinances, and financial institutions' internal assessments, can be adjusted using selectable options or manually entered values.
Stocks & Investing
18Tools · Ranked by successful calculations in the last 90 daysEasy for BeginnersDirect Input
PER Calculator
Calculate the price-to-earnings ratio (PER) from share price and earnings per share.
CalculatorEnterprise Value
Easy for BeginnersDirect Input
PBR Calculator
Calculate the price-to-book ratio (PBR) from share price and book value per share.
CalculatorEnterprise Value
Easy for BeginnersDirect Input
Dividend Yield Calculator
Calculate dividend yield from the stock price and dividend per share.
CalculatorDividend
Easy for BeginnersDirect Input
Stock Return Calculator
Calculate profit or loss and return based on buy and sell prices and quantities.
CalculatorTrading & Profit/Loss
Easy for BeginnersDirect Input
Stock Average Cost Calculator
Calculate the average purchase price after buying additional shares.
CalculatorTrading & Profit/Loss
Easy for BeginnersDirect Input
Stock Target Price Calculator
Calculate the target selling price from the purchase price and target return.
CalculatorTrading & Profit/Loss
Easy for BeginnersDirect Input
Stock Break-Even Selling Price Calculator
Calculate the minimum selling price needed to recover both buying and selling fees, including taxes.
CalculatorTrading & Profit/Loss
Easy for BeginnersDirect Input
Stop-Loss and Take-Profit Calculator
Calculate stop-loss and target prices, along with profit or loss, based on the purchase price, stop-loss percentage, and target return.
CalculatorTrading & Profit/Loss
Easy for BeginnersDirect Input
Compound Annual Growth Rate (CAGR) Calculator
Calculates the compound annual growth rate (CAGR) from the initial amount, final amount, and investment period.
CalculatorRate of Return
Easy for BeginnersDirect Input
Portfolio Return Calculator
Calculates portfolio performance using the investment amounts and weighted average returns of up to four assets.
CalculatorPortfolio
Easy for BeginnersDirect Input
Portfolio rebalancing calculator
Calculate how much to buy or sell based on current asset values and target allocation percentages.
CalculatorPortfolio
Easy for BeginnersDirect Input
ROE Calculator
Calculate ROE using net income and average shareholders' equity.
CalculatorEnterprise Value
Easy for BeginnersDirect Input
EPS Calculator
Calculate EPS using net income attributable to common shareholders and weighted-average shares outstanding.
CalculatorEnterprise Value
Easy for BeginnersDirect Input
Market Capitalization Calculator
Calculate market capitalization from share price and shares outstanding.
CalculatorEnterprise Value
Easy for BeginnersDirect Input
Share Dilution Calculator
Calculates the theoretical ex-rights price and equity dilution rate based on existing shares, new shares, and the issue price.
CalculatorCapital Increase & Stock Split
Easy for BeginnersDirect Input
Stock Split and Reverse Split Calculator
Calculates the new share count and theoretical share price based on stock split or reverse split ratios.
CalculatorCapital Increase & Stock Split
Easy for BeginnersDirect Input
Foreign Stock Exchange Rate and Return Calculator
Calculates profit or loss in South Korean won, accounting for both stock purchase and sale prices and exchange rate changes.
CalculatorTrading & Profit/Loss
Easy for BeginnersDirect Input
Future Value Adjusted for Inflation
Calculate how much you will need in the future to maintain your current purchasing power.
CalculatorRate of Return
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REGOLITH is more than a collection of links. It provides functional web tools that take you from entering data and running tasks to reviewing and saving results. Original files remain unchanged, with results created separately. Each tool page explains supported formats, usage steps, and how to review results before you begin.
Getting Started Guide
Instructions for selecting files, configuring options, running tools, and saving results are available on a separate guide page and within each tool.
Detailed Task Descriptions
Provides format characteristics, recommended uses, guidelines for verifying calculation results, and precautions for handling sensitive files.