Not a normal calculator

Internet Calculator Hub

Nine practical calculators in one place — salary tax, VAT, inflation, BMI, pregnancy, age, SIP, compound interest, and carbon footprint. Instant results, private in your browser.

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Salary Tax Calculator

Estimate income tax on annual salary. Includes Nepal progressive slabs and custom flat rate.

Tax mode

Annual taxable income

Currency label

Nepal slabs are simplified for estimation only — not official tax advice. Verify with IRD / a tax professional.

VAT Calculator

Add or remove VAT from an amount. Default 13% (Nepal) — change to any rate.

Amount

VAT rate (%)

Calculation

Inflation Calculator

See how purchasing power changes over time at a given inflation rate.

Amount today

Annual inflation (%)

Years

Direction

BMI Calculator

Body Mass Index from height and weight — metric or imperial units.

Units

Height (cm)

Weight (kg)

BMI is a screening tool only — it does not measure body fat or overall health.

Pregnancy Calculator

Estimate due date and pregnancy week from last menstrual period (LMP) or conception date.

Based on

Date

Average cycle length (days)

Estimates only (Naegele’s rule). Confirm with your doctor / ultrasound.

Age Calculator

Exact age in years, months, days — plus next birthday countdown.

Date of birth

Age on date

SIP Calculator

Project mutual fund Systematic Investment Plan maturity value and wealth gained.

Monthly investment

Expected annual return (%)

Duration (years)

Assumes constant returns compounded monthly. Markets vary — not investment advice.

Compound Interest Calculator

Grow a principal with optional regular contributions at different compounding frequencies.

Principal

Annual rate (%)

Years

Compounding

Extra monthly deposit (optional)

Carbon Footprint Calculator

Quick lifestyle estimate of annual CO₂e from travel, home energy, and diet.

Car km / year

Short flights / year

Home electricity (kWh / year)

Diet

Simplified factors for education. Real footprints vary by region, grid mix, and lifestyle.

Calculator Hub FAQ

What is the Internet Calculator Hub?

A free collection of practical calculators — salary tax, VAT, inflation, BMI, pregnancy, age, SIP, compound interest, and carbon footprint — running entirely in your browser on one page.

Is my data stored?

Calculations run locally in your browser. We only remember which calculator you last opened (cookie) so the hub can reopen on that tool.

Are tax and pregnancy results official?

No. Tax slabs and due-date estimates are illustrative helpers. Always confirm with a tax professional or healthcare provider.