Everyday Calculators

Loan & mortgage payments, percentages, tip split, BMI and exact date/age — all offline.

Free loan, car & mortgage payment calculator with amortization — plus percentage, tip split, BMI and days-between-dates. Runs in your browser, nothing uploaded.

About Everyday Calculators

Everyday Calculators is a free, browser-based tool with five modes — Loan, % (percentages), Tip, BMI, and Date — that you switch between with one segmented toggle. Type your numbers and results update instantly: loan/mortgage monthly payment plus a full month-by-month amortisation schedule, three percentage answers at once, a split tip, metric BMI with category, and an exact date/age breakdown. All math runs locally in your browser as pure functions (loan PDFs use pdf-lib), so nothing is uploaded, no rates are fetched, and there is no signup.

How to use Everyday Calculators

  1. Pick a mode with the toggle at the top: Loan, % , Tip, BMI, or Date.
  2. In Loan mode, enter the loan amount ($), annual rate (%), and term (yr) to see the monthly payment, total interest, and total paid, plus the first 12 months of the amortisation table.
  3. Use the CSV or PDF buttons above the schedule to export the full month-by-month loan schedule (the on-screen table shows only the first 12 months).
  4. In % mode, enter Value A and Value B to get 'A% of B', 'A is what % of B', and the percent change from A to B simultaneously.
  5. In Tip mode, enter the bill ($), tip (%), and number of people to split the tip, total, and per-person amount.
  6. In BMI mode, enter weight (kg) and height (cm) to get your BMI and category; in Date mode, pick From and To dates for an exact years/months/days, total days, weeks, and hours breakdown.

Frequently asked questions

Is my data uploaded to a server?
No. Every calculation runs entirely in your browser as local math — nothing you type is uploaded, no rates or data are fetched, and even the loan CSV/PDF exports are generated on your device.
Is it free and do I need an account?
Yes, it's completely free with no signup, account, or watermark.
Why does the loan table only show 12 rows?
The on-screen amortisation table previews just the first 12 months for readability. Use the CSV or PDF export button to get the complete month-by-month schedule, including the principal/interest split and remaining balance for every payment.
Does the loan calculator handle a 0% rate or fractional years?
Yes. At 0% the payment is a straight division of the principal across the term, and the term can be fractional (months are rounded). The final payment is adjusted so the balance ends at exactly zero to the cent.
What BMI formula and categories does it use?
It uses metric BMI = kg ÷ (height in metres)², rounded to one decimal, with categories Underweight (<18.5), Normal (18.5–24.9), Overweight (25–29.9), and Obese (30+). BMI is a rough screening figure, not a diagnosis.
How do I calculate someone's exact age in Date mode?
Pick the birthday in 'From' and today's date in 'To' — order doesn't matter. You get a calendar-aware years/months/days breakdown plus total days, weeks, and hours between the two dates.

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Everyday Calculators is also known as loan calculator, car loan payment calculator, mortgage payment calculator, emi calculator, percentage calculator, tip calculator split bill, bmi and days between dates calculator.