Calculate gratuity with customizable tip rate presets and round-up/round-down options. View pre-tax calculations and select themes for personalized settings. List all options for quick reference.
by Yong Gyun Kim★ 4.714 ratingsUtilitiesFreeData updated 2026-09-16
Estimate tax refund or liability by inputting , deductions, and personal details. Account for marital status, dependents, rental properties, side gigs, mortgage interest, and student loan interest.
Perform calculations, convert units and currencies, and compute percentages and proportions. Calculate areas and volumes. Drag and drop to create custom calculators. Solve complex or simple math problems.
Perform complex calculations with scientific functions, trigonometry, and unit conversions. Customize themes, adjust display settings, and save frequently used formulas. Export results and share calculations directly.
Perform mathematical calculations with support for parentheses and decimals. Save and reuse formulas or results. View calculation history with color coding, dates, and . Calculate totals from selected entries. Move or duplicate history entries.
Calculate price per kilo or pound of based on estimated weight and auctioneer calls. Use a number wheel to track bids. Switch between price per weight and unit price modes. Track purchases and display prices with a 10% leeway.
Calculate monthly payments, total amount paid, interest paid, and interest saved from extra payments. Determine time saved from additional payments and view a complete amortization schedule. Export calculations to CSV file.
Perform calculations with basic arithmetic operations. Input numbers and equations for quick results. Use a interface with nostalgic design elements. Adjust display settings for different calculation modes.
Add colors to your for a glowing effect. Choose from a wide range of colors. Customize key round corners. Adjust key positions to match the original layout. No full access required.
Calculate tips and taxes with customizable percentage settings. Input total amounts and split payments among users. Choose between tip and tax modes. Save calculation history and switch between iPhone and iPad layouts.
Calculate fluid rates and pressure loss in pipes. Determine diameter or maximum length based on rate and pressure drop. Find friction loss and rate using built-in formulas. Input dimensions and fluid properties for accurate results.
Calculate percentages, roots, and compound interest for specified time periods. Input values and select calculation type. Display results with detailed formulas. Export results as text or share directly.
Calculate VAT for 20% and 5% tax rates using separate calculation frames. Input values once and view tax-included amounts simultaneously. Total amounts for each rate are automatically calculated and displayed.
Calculate values with hours and minutes. Add, subtract, multiply, and divide entries. Automatically insert ":" when entering numbers. View calculation history and use a memory key to save and retrieve values.
Calculate pip for currency pairs to manage position sizing and risk. Input account currency, trading pair, position size, and exchange rate. Save previous entries and auto-fill currency pairs. Adjust exchange rates freely.
Calculate by entering length, width, and thickness. Optionally specify number of pieces, waste percentage, and cost per . Provides total and cost calculations.