UD5 Toolkit
Currency Code to Symbol Converter - Online ISO 4217 Lookup
Enter a three‑letter currency code like USD or EUR and instantly see the corresponding symbol and number of decimals. Quick developer reference.
Financial Calculators - Money Management
35+ toolsMortgage Overpayment & Amortization Calculator - Online
See how extra monthly or lump‑sum payments reduce your mortgage term and total interest. Dynamic chart. All local calculation.
Investment Goal Timeline - Online Reach Your Target
Enter your current savings, monthly contribution, and target amount. Calculate time needed and suggestions. Private.
Receipt & Expense Logger - Online Simple Finance
Snap or type expense details and store them locally. Categorize and see monthly totals. No cloud, no sign‑up.
NPV Calculator - Online Net Present Value & IRR
Enter cash flows and discount rate to compute Net Present Value and Internal Rate of Return. Finance 101.
Currency Symbol Lookup - Online Find $ € ¥
Search by country or currency name to find its symbol and code. Quick static reference for international business.
Number to English Words - Online Write Out Checks
Enter any number up to trillion and get the English word representation. For filling out checks or legal documents.
Static Currency Converter - Online Fixed Rates Table
Convert currencies using a built‑in table of approximate fixed rates. Useful for quick estimates without live data. Local.
Currency Name ↔ Code Converter - Online USD/EUR Lookup
Find the currency code (USD, EUR, JPY) for any country or reverse‑lookup the country from a code. Static reference.
ISO Currency Code Lookup - Online Search by Country
Find the three‑letter currency code (USD, EUR, JPY) for any country. Also lists currency symbol and name. Static.
Crypto Address Format Checker - Online Validate Wallet
Paste a Bitcoin, Ethereum, or other crypto wallet address and quickly verify its format and checksum. No connection to blockchain.
Rule of 72 Calculator - Online Estimate Investment Doubling
See how many years it takes to double your money at a given interest rate using the Rule of 72. Quick financial math.
Itemized Receipt Splitter - Online Who Ordered What?
Assign each receipt item to specific people, then split tax and tip proportionally. Fair group dining payments. All local.
Simplified DCF Valuation - Online Stock Intrinsic Value
Estimate the intrinsic value of a stock using a simplified Discounted Cash Flow model with growth rate and discount rate.
Stock Average Down Calculator - Online Investment Cost Basis
Calculate the new average cost of a stock after buying more shares at a different price. Invest smarter. All local.
IBAN Structure Checker - Online Validate Format & Country
Check if an IBAN has the correct length and structure for its country. Early validation, no bank connection.
Simple Budget Worksheet - Online Monthly Income Expense
Fill out a clean budget worksheet with income and expense categories. See totals and print. No data stored.
Hourly Pay Calculator - Online Wage & Overtime Estimator
Calculate your weekly, monthly, or annual pay based on hourly wage and hours. Include overtime rates. Accurate and private.
Currency Converter - Online Exchange Rate (Manual Update)
Convert between currencies using manually updated or default rates. Great for estimation when offline. Local settings.
Retirement Calculator - Online Savings & Investment Planner
Project your retirement savings growth with monthly contributions, employer match, and CAGR. Interactive chart. Financial data stays on your device.
Subscription Rename & Cost Calculator - Online Saver
Track your subscriptions, calculate monthly and yearly totals, and find savings by pausing unused services. Local data.
Car Loan Calculator - Online Auto Financing & EMI Tool
Estimate monthly car loan payments with trade-in, down payment, and sales tax options. Amortization schedule included. Client-side calculation.
Expense Tracker - Online Simple Budget & Spend Logger
Track personal expenses and categorize spending. Interactive charts show where your money goes. All financial data remains in your browser only.
Sales Tax Calculator - Online U.S. State Tax Estimator
Estimate the total price after adding US state sales tax. Select state, enter amount, and see breakdown. Simple and quick, perfect for shoppers.
Envelope Budget Planner - Online Cash Category Allocator
Allocate your monthly income into virtual envelopes by category. Track spending and see remaining balances. LocalStorage.
Loan Calculator - Online EMI & Amortization Schedule Generator
Calculate monthly EMIs for any loan type and see the detailed amortization schedule. Compare different interest rates and tenures with instant results.
Compound Interest Calculator - Online Investment Growth Tool
Project how your savings and investments grow over time with compound interest. Interactive chart and detailed table. Free and anonymous.
Mortgage Calculator - Online Home Loan & Amortization Tool
Estimate monthly mortgage payments with amortization schedule. Input loan amount, interest rate, and term. All calculations performed securely on your device.
Event Budget Planner - Online Party Expense Estimator
Plan a party or event budget by category (venue, food, decorations). See total and cost per guest. Export summary.
Simple Ledger Book - Online Debit / Credit Tracker
A basic double‑entry bookkeeping table. Add transactions with description, debit, and credit. Balances automatically.
CAGR Calculator - Online Compound Annual Growth Rate
Find the CAGR of an investment given start and end values over a time period. Instant growth rate.
Crypto Price Ticker - Online Live Bitcoin & Ethereum
Live cryptocurrency prices from public APIs. Clean ticker with percentage changes. Pure frontend, no account needed.
Net Worth Tracker - Online Assets & Liabilities Overview
Log your assets and liabilities to calculate your net worth over time. Data saved only in your browser for security. Simple and clutter-free.
Compound Interval Calculator - Online Daily/Weekly Growth
Compute compound interest with various compounding frequencies (daily, weekly, monthly). Compare APY with simple interest. Local and secure.
Credit Card Payoff Calculator - Online Debt Repayment Plan
Calculate how long it will take to pay off credit card debt with fixed monthly payments or a payoff goal. Understand interest costs fully.