Compare financial scenarios
Estimate mortgage costs or explore how contributions and compounding affect long-term growth.
Everyday numbers
Free online calculators
Solve ages, business-day schedules, discounts, percentages, dates, unit conversions, mortgage estimates, and compound-growth questions with clear inputs and results.
8 focused toolsNo signup requiredFree to use
Available now
Browse calculators
Choose a focused utility to open its controls, instructions, and related workflows.
Percentage CalculatorCalculate percentages, proportions, percentage changes, increases, and decreases.→Discount CalculatorCalculate sale price, stacked discounts, savings, quantity totals, and sales tax.→Age CalculatorCalculate exact calendar age, elapsed days, birth weekday, and the next birthday.→Business Days CalculatorCount workdays or add and subtract business days with custom weekends and holidays.→Compound Interest CalculatorEstimate future value, contributions, interest earned, and yearly compound growth.→Mortgage CalculatorEstimate monthly mortgage payments, total interest, and an annual amortization schedule.→Date CalculatorCompare dates, add or subtract days, and count Monday through Friday.→Unit ConverterConvert length, mass, temperature, volume, area, speed, storage, and cooking units.→
Common workflows
What these tools help you do
Plan a sale purchase
Calculate stacked discounts, per-item savings, quantity totals, and post-discount sales tax.
Answer everyday math
Find percentages, changes, increases, decreases, proportions, and compatible unit values.
Plan with calendar dates
Measure durations, add or subtract time, and count weekdays between dates.
Calculate exact age
Find calendar age, elapsed days and weeks, birth weekday, and the next birthday without timezone drift.
Schedule by business days
Count workdays or move a date forward and backward with configurable weekends and custom holiday exclusions.
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