Tool Guides
100 explanations covering formulas, assumptions, examples, and common mistakes.
📊 Position Size Calculator Guide
Estimate position size from account balance, risk percentage, stop distance, and point value.
Trading⚖️ Risk/Reward Calculator Guide
Compare potential reward with the amount at risk before entering a trade.
Trading📈 Profit/Loss Calculator Guide
Estimate profit or loss for LONG and SHORT positions.
Trading💱 Pip Value Calculator Guide
Estimate pip value from lot size and pip size.
Trading🧮 Margin Calculator Guide
Estimate required margin from position value and leverage.
Finance% Percentage Calculator Guide
Calculate percentages, changes, and proportional values.
Finance💰 Compound Interest Calculator Guide
Project investment growth with regular compounding and contributions.
Finance🏦 Loan Payment Calculator Guide
Estimate monthly loan payments and total interest.
Finance🎯 Savings Goal Calculator Guide
Estimate the monthly contribution needed to reach a savings target.
Security🔐 Password Generator Guide
Generate strong random passwords locally in your browser.
Developer{} JSON Formatter Guide
Format, minify, and validate JSON instantly.
Developer64 Base64 Encoder/Decoder Guide
Encode text to Base64 or decode Base64 back to text.
Developer# UUID Generator Guide
Generate one or many version 4 UUIDs in your browser.
Text✍️ Word Counter Guide
Count words, characters, sentences, and reading time.
Everyday⇄ Unit Converter Guide
Convert common length, weight, and temperature units.
Trading📉 ATR Calculator Guide
Calculate average true range from recent true-range values.
TradingK Kelly Criterion Calculator Guide
Estimate the Kelly fraction from win probability and payoff ratio.
Trading⚠️ Risk of Ruin Calculator Guide
Estimate simplified risk of ruin from win rate, payoff ratio, and risk per trade.
Trading🎯 Break-even Win Rate Calculator Guide
Find the win rate required for a given average reward-to-risk ratio.
Trading↘ Drawdown Calculator Guide
Measure account drawdown and the gain required to recover.
Trading🏆 Win Rate Calculator Guide
Calculate wins, losses, win rate, and loss rate.
Trading× Leverage Calculator Guide
Calculate effective leverage from position value and account equity.
Trading🛑 Stop Loss Calculator Guide
Calculate stop-loss price from entry price and risk distance.
Trading✅ Take Profit Calculator Guide
Calculate take-profit price from entry, stop distance, and reward ratio.
TradingΣ Average Entry Price Calculator Guide
Calculate the weighted average entry price across multiple fills.
Finance🏠 Mortgage Calculator Guide
Estimate monthly mortgage payment, total payment, and interest.
Finance% APR Calculator Guide
Estimate annual percentage rate from interest and fees.
Finance📈 Inflation Calculator Guide
Estimate future cost after inflation or purchasing-power change.
Finance💹 Investment Return Calculator Guide
Calculate investment gain, total return, and annualized return.
Finance🌴 Retirement Savings Calculator Guide
Project retirement savings with monthly contributions.
Finance🧾 50/30/20 Budget Calculator Guide
Split monthly income into needs, wants, and savings targets.
Finance⏱ Salary to Hourly Calculator Guide
Convert annual salary to hourly, weekly, and monthly pay.
Finance🏷️ Discount Calculator Guide
Calculate sale price and savings from a percentage discount.
Finance🧮 Sales Tax Calculator Guide
Calculate sales tax and final purchase total.
Finance🍽️ Tip Calculator Guide
Calculate tip amount, total bill, and per-person split.
Developer🔗 URL Encoder/Decoder Guide
Encode or decode URL components safely in your browser.
DeveloperJWT JWT Decoder Guide
Decode JWT header and payload locally without verification.
Developer🕒 Unix Timestamp Converter Guide
Convert Unix timestamps to dates and dates to Unix time.
Developer# Hash Generator Guide
Generate SHA-256 hashes locally using the Web Crypto API.
Developer✓ JSON Validator Guide
Validate JSON and display clear parsing errors.
Developer< HTML Escape/Unescape Guide
Escape HTML special characters or restore text.
TextAa Case Converter Guide
Convert text to upper, lower, title, sentence, camel, or kebab case.
Text↕ Text Line Sorter Guide
Sort, reverse, deduplicate, or clean lines of text.
Text≠ Duplicate Line Remover Guide
Remove duplicate lines while preserving their first occurrence.
Everyday🎂 Age Calculator Guide
Calculate age in years, months, and days from a birth date.
Everyday📅 Date Difference Calculator Guide
Calculate the number of days and weeks between two dates.
Everyday⚕ BMI Calculator Guide
Calculate body mass index from height and weight.
Everyday🏃 Running Pace Calculator Guide
Calculate pace, speed, or finish time for a distance.
Everyday⛽ Fuel Cost Calculator Guide
Estimate fuel required and trip cost.
Everyday🎲 Random Number Generator Guide
Generate random integers within a selected range.
Finance↗ ROI Calculator Guide
Calculate return on investment from cost and final value.
Finance⚖ Debt-to-Income Calculator Guide
Estimate monthly debt-to-income ratio.
Finance🛟 Emergency Fund Calculator Guide
Estimate an emergency-fund target from monthly essential expenses.
Finance💳 Credit Card Payoff Calculator Guide
Estimate payoff time and interest for a fixed monthly payment.
FinanceΣ Net Worth Calculator Guide
Calculate net worth from total assets and liabilities.
Business🏷 Markup and Margin Calculator Guide
Compare markup and gross margin from cost and selling price.
Business◎ Business Break-even Calculator Guide
Estimate units and revenue needed to cover fixed costs.
Business% Profit Margin Calculator Guide
Calculate gross profit and profit margin.
Business📣 CPM Calculator Guide
Calculate advertising cost per thousand impressions.
Business🎯 Conversion Rate Calculator Guide
Calculate conversion rate from visitors and conversions.
Business👥 Customer Acquisition Cost Calculator Guide
Estimate acquisition cost per new customer.
Business∞ Customer Lifetime Value Calculator Guide
Estimate simple customer lifetime value.
Business📦 Inventory Turnover Calculator Guide
Calculate inventory turnover and days inventory outstanding.
Business👔 Payroll Cost Calculator Guide
Estimate total payroll from wages and employer burden.
Business⌛ Freelance Hourly Rate Calculator Guide
Estimate an hourly rate from income target, expenses, and billable hours.
Business🤝 Sales Commission Calculator Guide
Calculate commission and net sales proceeds.
Finance📈 CAGR Calculator Guide
Calculate compound annual growth rate.
Finance72 Rule of 72 Calculator Guide
Estimate how long money takes to double at a fixed annual rate.
Finance💵 Dividend Yield Calculator Guide
Calculate annual dividend yield per share.
Trading₿ Crypto Average Price Calculator Guide
Calculate weighted average purchase price across crypto buys.
TradingE Trade Expectancy Calculator Guide
Estimate average expectancy per trade.
TradingPF Profit Factor Calculator Guide
Calculate profit factor from gross profit and gross loss.
Trading🛡 Risk Per Trade Calculator Guide
Calculate cash risk from account size and risk percentage.
Tradingφ Fibonacci Retracement Calculator Guide
Calculate common Fibonacci retracement levels between a high and low.
TradingP Pivot Point Calculator Guide
Calculate classic pivot, support, and resistance levels.
Education± Percentage Error Calculator Guide
Calculate absolute and percentage error.
Educationx̄ Mean Median Mode Calculator Guide
Calculate common summary statistics from a list of numbers.
Educationσ Standard Deviation Calculator Guide
Calculate population and sample standard deviation.
EducationA+ Grade Calculator Guide
Calculate a weighted course grade.
Education🎓 GPA Calculator Guide
Calculate GPA from grade points and credits.
Educationx² Quadratic Formula Calculator Guide
Solve quadratic equations with real or complex roots.
Education∠ Slope Calculator Guide
Calculate slope between two coordinate points.
Education↔ Coordinate Distance Calculator Guide
Calculate distance between two coordinate points.
Education○ Circle Calculator Guide
Calculate circle circumference and area from radius.
Education△ Triangle Area Calculator Guide
Calculate triangle area from base and height.
EducationΩ Ohm’s Law Calculator Guide
Calculate voltage, current, resistance, and power from voltage and resistance.
Developer01 Binary Decimal Converter Guide
Convert integers between binary and decimal.
Developer# HEX RGB Color Converter Guide
Convert colors between HEX and RGB notation.
Developer? Query String Parser Guide
Parse a URL query string into readable key-value pairs.
Text- URL Slug Generator Guide
Convert text into a clean lowercase URL slug.
Text📖 Reading Time Calculator Guide
Estimate reading and speaking time from text length.
TextAa Character Frequency Counter Guide
Count how often each character appears in text.
Text••• Morse Code Translator Guide
Translate basic Latin text to Morse code.
DeveloperKB Data Size Converter Guide
Convert bytes, kilobytes, megabytes, and gigabytes.
Everyday▭ Aspect Ratio Calculator Guide
Scale width and height while preserving aspect ratio.
Everyday⏱ Time Duration Calculator Guide
Calculate elapsed time between two clock times.
Everyday🌙 Sleep Cycle Calculator Guide
Suggest wake times based on approximate 90-minute sleep cycles.
Everyday💧 Daily Water Intake Estimator Guide
Estimate a basic daily water target from body weight.
Everyday🔥 Activity Calorie Estimator Guide
Estimate calories burned using MET, body weight, and duration.
Everyday📏 Body Fat Estimate Calculator Guide
Estimate body-fat percentage using the U.S. Navy circumference method.
Reviewed for clarity and calculator accuracy. Educational use only; verify important decisions with a qualified professional.