Calci.in — Every Tool in One Place

Every tool you need, in one place

Calci.in brings finance, health, converters and everyday utilities together. Browse by category or view everything at once. 100% FREE, fast, and mobile-friendly.

Compound Interest Calculator

Project growth with compounding by period, rate, and time.

Currency Converter

Convert between global currencies instantly.

EMI Calculator

Monthly installment, interest, and amortization schedule.

FD Calculator

Fixed deposit maturity value & interest earned.

SIP Calculator

Estimate wealth via monthly SIP contributions.

RD Calculator

Recurring deposit maturity and interest breakdown.

PF & Gratuity Calculator

EPF, employer share & gratuity estimation.

NPS Calculator

Pension corpus and annuity projection for NPS.

Lumpsum Investment Calculator

One-time investment growth over time.

Inflation Calculator

Adjust values for purchasing power over years.

Income Tax Calculator

Old & new regimes with deductions and slabs.

HRA Exemption Calculator

Eligible HRA deduction based on salary & rent.

GST Calculator

GST inclusive/exclusive totals with invoice split.

BMI Calculator

Body mass index with category ranges.

BMR Calculator

Basal metabolic rate using Mifflin-St Jeor.

Body Fat Calculator

Estimate % body fat by measurements.

Ideal Weight Calculator

Ranges via Devine / Hamwi / Robinson.

Body Water Intake Calculator

Daily water target by weight & activity.

Calorie Calculator

TDEE and calorie goals for gain/loss.

Protein Intake Calculator

Daily protein by body weight and goal.

Pregnancy Due Date Calculator

EDD from LMP or conception date.

Ovulation Calculator

Fertile window based on cycle length.

Age Calculator

Exact years, months, days from DOB.

Date Difference Calculator

Duration between two dates/times.

Fraction Calculator

Add, subtract, multiply, divide fractions.

Unit Converter

Length, weight, volume, area & more.

Scientific Calculator

Trigs, powers, logs & memory.

Ratio Calculator

Simplify and split in given ratios.

Percentage Calculator

Find x% of y, percentage change, etc.

GPA / CGPA Calculator

Semester and cumulative GPAs.

Average / Mean / Median Calculator

Quick stats for any number list.

Stamp Duty Calculator

Approx. duty payable by state/amount.

Rent vs Buy Calculator

Compare long-term costs & equity.

Property Tax Calculator

Annual tax estimate by property value.

Mortgage Calculator

EMI, interest, and payoff chart.

Loan Affordability Calculator

Maximum eligible home loan estimate.

Break-Even Point Calculator

Units or revenue to cover all costs.

Discount Calculator

Sale price, savings & stackable offers.

Return on Investment (ROI) Calculator

Net return % and profit analysis.

Profit Margin Calculator

Gross / operating / net margins.

Markup & Margin Calculator

Convert between markup and margin.

Inventory Turnover Calculator

Turns, DIO, and stock efficiency.

Vaccination Schedule Calculator

Recommended shots by age timeline.

Baby Growth Percentile Calculator

WHO/CDC growth charts for boys/girls.

Astrology / Kundli Matching

Ashtakoota matching & compatibility.

Zodiac Sign Finder

Your sun sign by birth date.

Love Compatibility Calculator

Score chemistry with name/birth data.

Random Number Generator

Create lists with ranges, unique picks & history.

Remove Extra Spaces

Clean text: trim, collapse spaces & line breaks.

Typing Speed Test

WPM, accuracy and live stats.

Case Converter

UPPER, lower, Title, Sentence & more.

Word Counter

Words, chars, sentences, reading time.

Countdown Timer

Large display with progress & embeds.

Number to Words Converter

Indian & International formats, cases.

Online Stopwatch

Lap times, keyboard control, big digits.

QR Code Generator

Custom shapes, logo, download as PNG/SVG.

Time Zone Converter

Compare cities with analog clock.

Password Generator

Strong, memorable, and passphrase options.

Color Picker Tool

Pick, palette, contrast & copy HEX/RGB.

Meta Tag Generator

SEO & social preview tags in one click.

Domain Age Checker

Registration date, expiry & exact age.

Binary ↔ Decimal ↔ Hex Converter

BigInt-powered conversions with history.

Do more with Calci.in

Calculator with charts and a notebook — finance planning

Finance calculators, simplified

Plan EMIs, SIP & lumpsum, estimate taxes (Income Tax, GST, HRA) and track inflation — all in Indian formats.

Healthy food, tape and journal — wellness planning

Health & family wellness

BMI, BMR, calories, protein targets plus pregnancy, ovulation and baby growth tools for everyday life.

Laptop and stationery on a desk — productivity tools

Math, converters & utilities

Age & date difference, unit & currency conversion, randomizers, word counters, QR codes and more.