CraigyBabyJ

Calculators

Free online calculators by topic.

Date and time calculators, finance calculators and other practical estimate tools grouped so they are easy to find.

Calculator tools7 browser-based calculators across Date & Time and Finance.

Browse calculator categories

Date & TimeAge, date difference, countdown, working days and time duration calculators. FinanceMortgage and money calculators for quick planning estimates.

Date & Time

AGE Age Calculator Work out an exact age in years, months and days from a date of birth. Date of birth to Age DIF Date Difference Calculator Count the days, weeks and months between two dates. Two dates to Duration PLM Date Add or Subtract Add or subtract days, weeks, months or years from a date. Date + amount to New date CDN Countdown Calculator Count how many days and weeks are left until a future date. Target date to Days left
All date & time calculators

Finance

MRTG Mortgage Interest Rate Calculator Estimate how an interest rate change could affect a repayment mortgage. Mortgage details to Monthly repayment
All finance calculators

All calculators

AGE Age Calculator Work out an exact age in years, months and days from a date of birth. Date of birth to Age DIF Date Difference Calculator Count the days, weeks and months between two dates. Two dates to Duration PLM Date Add or Subtract Add or subtract days, weeks, months or years from a date. Date + amount to New date CDN Countdown Calculator Count how many days and weeks are left until a future date. Target date to Days left WD Working Days Calculator Count the business days (Monday to Friday) between two dates. Two dates to Business days DUR Time Duration Calculator Work out the hours and minutes between a start time and an end time. Two times to Duration MRTG Mortgage Interest Rate Calculator Estimate how an interest rate change could affect a repayment mortgage. Mortgage details to Monthly repayment

What are these calculators useful for?

Some numbers are awkward enough that a quick calculator is easier than a spreadsheet. These tools are grouped by topic so you can jump straight to date maths, time durations, mortgage estimates and future calculator categories.

Every calculator runs in your browser. Finance calculators are estimates only, so check important money decisions against lender documents or qualified advice.

Frequently asked questions

Are these calculators free?

Yes. The calculators are free to use in a modern browser.

Do my details leave my device?

No. The calculations run in your browser, so normal use does not upload your inputs.

Which category should I start with?

Use Date & Time for ages, durations and countdowns. Use Finance for mortgage and money estimates.