Calculators

Discount, interest, business days, age, download time, tip, loan, BMI, percentage. All instant, all private.

Original price

Discount (%)

Tax / VAT (%) optional

You save—

Sale price (before tax)—

Final price (incl. tax)—

Effective saving—

Enter a price and discount percentage. Tax is applied after the discount.

Deposit amount

Annual interest rate (%)

Interest type

Per day—

Per month (30 d)—

Per year — interest earned—

Total after 1 year—

Simple interest = P × r × t. Compound reinvests interest at the chosen frequency.

Start date

End date

Public holidays to exclude one per line, YYYY-MM-DD

Calendar days—

Weekends—

Holidays (entered)—

Business days—

Counts Mon–Fri, excluding weekends and any holidays you list. Both start and end dates are inclusive.

Date of birth

As of date

Age—

Total months—

Total days—

Next birthday—

Calculates exact age in years, months, and days. "As of date" defaults to today.

File size

Size unit

Connection speed

Speed unit

Download time—

In seconds—

In minutes—

1 GB = 1024 MB = 8192 Mb. Real-world speeds vary; this shows the theoretical minimum.

Bill total

Tip (%)

Split between (people)

Tip amount—

Total (bill + tip)—

Per person—

Tip per person—

Loan amount

Annual interest rate (%)

Term (months)

Monthly payment (EMI)—

Total repayment—

Total interest paid—

Uses the standard amortisation formula. EMI = P·r·(1+r)ⁿ / ((1+r)ⁿ−1) where r = monthly rate.

Unit system

Metric (kg / cm) Imperial (lb / in)

Weight (kg)

Height (cm)

BMI—

Category—

WHO ranges: Underweight <18.5 · Normal 18.5–24.9 · Overweight 25–29.9 · Obese ≥30

BMI is a general screening tool and does not account for muscle mass, age, or body composition.

What do you want to calculate?

X (%)

Y (value)

Result—

Date

Time

From timezone

To timezone

Converted time—

Date · destination—

UTC offset (from)—

UTC offset (to)—

Difference—

All calculations are local — nothing leaves your device.